Professor Roy Vellaisamy

  • Professor of Intelligent Devices and Systems (Electronic & Nanoscale Engineering) / Glasgow College UESTC (Engineering - University of Electronic Science & Technology of China)

Research interests

Research interests

Intelligent devices and systems for sensing application

Wearable thermoelectric and piezoresistive devices

Neuromorphic devices

Brief biography:

Roy Vellaisamy is a Professor of Intelligent systems at the James Watt School of Engineering, University of Glasgow. He works on multidisciplinary research blending device physics with materials chemistry and electronic engineering. He has published over 200 articles in journals such as Nature Communications, Advanced Materials, Advanced Functional Materials, Analytical Chemistry etc. and his publications are cited over 7500 times [h-index - 42]. In addition, he has 21 US/Intrenational/Chinese patents​. Recently, he received gold medal for hisSensor Platform” at the International Exhibition of Inventions Geneva 2019.

Intelligent Sensors for water and food quality monitoring

Growing industrialization and urbanization has put human beings and other living organisms at risk against new threats due to the contamination of food, water and air. These Contaminants endanger all the living organisms in this world, especially for human beings genetic disorders and unknown diseases become common nowadays. The WHO statistics show that more than 422 million people worldwide are suffering from contamination related illness. The growing prevalence of such disorders has been linked to exposure to chemicals in plastic, food and water. Although regulatory steps have been taken to minimize risk, cases of overexposure still occur. Detection of these chemicals is done in testing labs using expensive and time consuming mass spectrometer systems that require specially trained users. In the regard, our work is based on real-time monitoring system for a rapid pre-screening test that could curtail cases of contamination. 

 

  • Venkatesh, S.; Li, T.; Wang, X.-S.; Yeung, C.-C.; Pei, K.; Sun, Q.-J.; Wu, W.; Li, R. K. Y.; Lam, M. H. W.; Chan, P. K. L.; et al. Dual-Gated Transistor Platform for On-Site Detection of Lead Ions at Trace Levels.(2018) Analytical Chemistry, 90 (12), 7399–7405.
  • Venkatesh, S., Yeung, C.-C., Sun, Q.-J., Zhuang, J., Li, T., Li, R.K.Y., Roy, V.A.L. Selective and sensitive onsite detection of phthalates in common solvents (2018) Sensors and Actuators, B: Chemical, 259, pp. 650-657.

 

Point of Care (PoC) diagnostic tools for the screening of cancer biomarkers 

Point of care sensing technology is a rapidly growing area in the field of diagnostics and it has been estimated that a 100% accurate point of care diagnostic system can save up to 625,000 lives annually. We focus on smart electronic device to perform point of care devices testing and diagnosis. For instance, we have successfully made PoC electronic devices for screening Prostate cancer biomarkers in urine and extending to detect other biomarkers in body fluids/blood serum. 

A. L. Roy VELLAISAMY, Hon Wah Michael LAM, Shishir VENKATESH, Chi Chung Yeung, "A method and an apparatus for determining a presence or an amount of a polymine or its derivative in a sample"; US patent application no: 16/127,321

A. L. Roy VELLAISAMY, "An Electrochemical Detector"; US patent application no: 15/393,336

Wearable devices for real-time monitoring of human motions using piezoresistive and thermoelectric sensors.

Real-time monitoring of physiological signals such as wrist pulse, body temperature, and body motion provides valuable information for disease diagnosis and treatment. Furthermore, skin sensors are used as pressure sensors, temperature sensors, and humidity sensors etc. Particularly, the skin-like piezoresistive pressure sensor, which convert external force into an electrical signal and thermoelectric senors which converts the body heat into electricity have advantages of simple fabrication procedures and signal acquisition. We focus on materials engineering for the fabrication of skin sensors.

 

  • Sun, Q., Zhao, X., Zhou, Y., Yeung, C., Wu, W., Venkatesh, S., Xu, Z., Wylie, J. J., Li, W., Roy, V. A. L. Fingertip-Skin-Inspired Highly Sensitive and Multifunctional Sensor with Hierarchically Structured Conductive Graphite/Polydimethylsiloxane Foams (2019) Advanced Functional Materials, 29(18), no. 1808829.
  • Sun, Q.-J., Zhuang, J., Venkatesh, S., Zhou, Y., Han, S.-T., Wu, W., Kong, K.-W., Li, W.-J., Chen, X., Li, R.K.Y., Roy, V.A.L. Highly Sensitive and Ultrastable Skin Sensors for Biopressure and Bioforce Measurements Based on Hierarchical Microstructures (2018) ACS Applied Materials and Interfaces, 10 (4), pp. 4086-4094.

 

Engineering of materials for the application in neuromorphic devices.

Constructing neuro-inspired architectures with novel artificial devices ensures memorizing and learning with lower energy consumption and higher density which may overcome the data traffic bottleneck in von Neumann computing system. In this project, we finetune and engineer wide range materials for the construction of synaptic transistors.

 

  • Lv, Z.; Wang, Y.; Chen, Z.; Sun, L.; Wang, J.; Chen, M.; Xu, Z.; Liao, Q.; Zhou, L.; Chen, X.; Zhou, Y.; Han, S. T.; Roy, A. L. Vellaisamy; Phototunable Biomemory Based on Light-Mediated Charge Trap (2018) Advanced Science. 5 (9), 1800714.
  • Zhou, L., Mao, J.-Y., Ren, Y., Yang, J.-Q., Zhang, S.-R., Zhou, Y., Liao, Q., Zeng, Y.-J., Shan, H., Xu, Z., Fu, J., Wang, Y., Chen, X., Lv, Z., Han, S.-T., Roy, V.A.L. Biological Spiking Synapse Constructed from Solution Processed Bimetal Core-Shell Nanoparticle Based Composites (2018) Small.14(28) 1800288.
  • Lv, Z., Zhou, Y., Han, S.-T., Roy, V.A.L. From biomaterial-based data storage to bio-inspired artificial synapse (2018) Materials Today, 21(5) 537-552.
  • Wang, Y., Lv, Z., Liao, Q., Shan, H., Chen, J., Zhou, Y., Zhou, L., Chen, X., Roy, V.A.L., Wang, Z., Xu, Z., Zeng, Y.-J., Han, S.-T. Synergies of Electrochemical Metallization and Valance Change in All-Inorganic Perovskite Quantum Dots for Resistive Switching (2018) Advanced Materials,30 (28), 180032 .
  • Zhou, Y., Han, S.-T., Chen, X., Wang, F., Tang, Y.-B., Roy, V.A.L., An upconverted photonic nonvolatile memory (2014), Nature Communications, 5, art. no. 4720

 

Single cell measurements 

In the field of cellular biology, single cell analysis method is standing as a powerful tool for developing a deep understanding on biological system and cellular heterogeneity. Most of the current understanding of cell biology is built upon the population averaged measurement methods which lead to false conclusions due to presence of large cell population. We design a system of single cell analysis method by coupling a nano-needle and Single Cell Transistor for real-time and in-situ electrical analysis. This Single Cell Transistor method promises a giant leap for an experimenter in electrophysiology as a versatile tool and a potential replacement for the patch clamp method, to study single cell activity via direct measurement in real time.

  • Saw Lin Oo, Shishir Venkatesh, Abdul-Mojeed Ilyas, Vaithinathan Karthikeyan,
    Clement Manohar Arava, Eva Yi Kong, Chi-Chung Yeung, Xianfeng Chen, Peter K. N. Yu, and Vellaisamy A. L. Roy; Gating a Single Cell: A Label-Free and Real-Time Measurement Method for Cellular Progression (2020), Analytical Chemistry, 92, 2, 1738-1745

 


Publications

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Jump to: 2020 | 2019 | 2018 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002
Number of items: 70.

2020

Karthikeyan, V., Surjadi, J. U., Wong, J. C.K., Kannan, V., Lam, K.-H., Chen, X., Lu, Y. and Roy, V. A.L. (2020) Wearable and flexible thin film thermoelectric module for multi-scale energy harvesting. Journal of Power Sources, 455, 227983. (doi: 10.1016/j.jpowsour.2020.227983)

Oo, S. L., Ilyas, A.-M., Karthikeyan, V., Arava, C. M., Kong, E. Y., Yeung, C.-C., Chen, X., Yu, P. K.N. and Vellaisamy, R. A.L. (2020) Gating a single cell: a label-free and real-time measurement method for cellular progression. Analytical Chemistry, 92(2), pp. 1738-1745. (doi: 10.1021/acs.analchem.9b03136) (PMID:31904934)

2019

Sun, Q.-J., Zhao, X.-H., Zhou, Y., Yeung, C.-C., Wu, W., Venkatesh, S., Xu, Z.-X., Wylie, J. J., Li, W.-J. and Roy, V. A.L. (2019) Fingertip‐skin‐inspired highly sensitive and multifunctional sensor with hierarchically structured conductive graphite/polydimethylsiloxane foams. Advanced Functional Materials, 29(18), 1808829. (doi: 10.1002/adfm.201808829)

2018

Venkatesh, S. et al. (2018) Dual-gated transistor platform for on-site detection of lead ions at trace levels. Analytical Chemistry, 90(12), pp. 7399-7405. (doi: 10.1021/acs.analchem.8b00841) (PMID:29812910)

Venkatesh, S., Yeung, C.-C., Sun, Q.-J., Zhuang, J., Li, T., Li, R. K.Y. and Roy, V. A.L. (2018) Selective and sensitive onsite detection of phthalates in common solvents. Sensors and Actuators B: Chemical, 259, pp. 650-657. (doi: 10.1016/j.snb.2017.12.107)

2013

Ye, F., Zhong, X., Cai, X.-M., Huang, L.-B., Roy, V.A.L. , Jing, S.-Y., Zhang, D.-P., Fan, P., Luo, J.-T. and Tian, X.-Q. (2013) Structural, electrical, and optical properties of Zn1-xSn xO thin films deposited by reactive co-sputtering. Physica Status Solidi A: Applications and Materials Science, 210(11), pp. 2404-2408. (doi: 10.1002/pssa.201329266)

Zhou, Y., Han, S.-T., Yan, Y., Huang, L.-B., Zhou, L., Huang, J. and Roy, V.A.L. (2013) Solution processed molecular floating gate for flexible flash memories. Scientific Reports, 3, 3093. (doi: 10.1038/srep03093) (PMID:24172758) (PMCID:PMC3813938)

Han, S.-T., Zhou, Y. and Roy, V.A.L. (2013) Towards the development of flexible non-volatile memories. Advanced Materials, 25(38), pp. 5425-5449. (doi: 10.1002/adma.201301361) (PMID:24038631)

Han, S.-T., Zhou, Y., Yang, Q.-D., Lee, C.-S. and Roy, V.A.L. (2013) Poly(3-hexylthiophene)/gold nanoparticle hybrid system with an enhanced photoresponse for light-controlled electronic devices. Particle and Particle Systems Characterization, 30(7), pp. 599-605. (doi: 10.1002/ppsc.201300005)

Zhou, Y., Han, S.-T., Huang, L.-B., Huang, J., Yan, Y., Zhou, L. and Roy, V.A.L. (2013) A low voltage programmable unipolar inverter with a gold nanoparticle monolayer on plastic. Nanotechnology, 24(20), 205202. (doi: 10.1088/0957-4484/24/20/205202)

Zhou, Y., Han, S.-T., Xu, Z.-X. and Roy, V.A.L. (2013) The strain and thermal induced tunable charging phenomenon in low power flexible memory arrays with a gold nanoparticle monolayer. Nanoscale, 5(5), pp. 1972-1979. (doi: 10.1039/c2nr32579a)

2012

To, W.-K., Fu, J., Yang, X., Roy, V.A.L. and Huang, Z. (2012) Porosification-reduced optical trapping of silicon nanostructures. Nanoscale, 4(19), pp. 5835-5839. (doi: 10.1039/c2nr31680c)

Zhou, Y., Han, S.-T., Xu, Z.-X. and Roy, V.A.L. (2012) Low voltage flexible nonvolatile memory with gold nanoparticles embedded in poly(methyl methacrylate). Nanotechnology, 23(34), 344014. (doi: 10.1088/0957-4484/23/34/344014)

Zhou, Y., Han, S.-T., Xu, Z.-X., Yang, X.-B., Ng, H.-P., Huang, L.-B. and Roy, V.A.L. (2012) Functional high-k nanocomposite dielectrics for flexible transistors and inverters with excellent mechanical properties. Journal of Materials Chemistry, 22(28), pp. 14246-14253. (doi: 10.1039/c2jm31813j)

Han, S.-T., Zhou, Y., Xu, Z.-X. and Roy, V.A.L. (2012) Controllable threshold voltage shifts of polymer transistors and inverters by utilizing gold nanoparticles. Applied Physics Letters, 101(3), 033306. (doi: 10.1063/1.4737422)

Han, S.-T., Zhou, Y., Xu, Z.-X., Huang, L.-B., Yang, X.-B. and Roy, V.A.L. (2012) Microcontact printing of ultrahigh density gold nanoparticle monolayer for flexible flash memories. Advanced Materials, 24(26), pp. 3556-3561. (doi: 10.1002/adma.201201195) (PMID:22678769)

Chen, W.-B., Zu, Z.-X., Li, K., Chui, S. S.-Y., Roy, V.A.L. , Lai, P.-T. and Che, C.-M. (2012) Improving the performance of polymer solar cells by adjusting the crystallinity and nanoscale phase separation. Chinese Physics B, 21(7), 078401. (doi: 10.1088/1674-1056/21/7/078401)

Ng, C.K.M., Chong, E.Y.W., Roy, V.A.L. , Cheung, K.M.C., Yeung, K.W.K. and Yu, K.N. (2012) Fabrication of micropillar substrates using replicas of alpha-particle irradiated and chemically etched PADC films. Applied Radiation and Isotopes, 70(7), pp. 1432-1435. (doi: 10.1016/j.apradiso.2011.11.019)

Zhou, L., Xu, Z.-X., Zhou, Y., Feng, Y., Zhou, X.-G., Xiang, H.-F. and Roy, V.A.L. (2012) Structure-charge transport relationship of 5,15-dialkylated porphyrins. Chemical Communications, 48(42), pp. 5139-5141. (doi: 10.1039/c2cc31137b) (PMID:22517491)

Xu, J., Yang, X., Wang, H., Chen, X., Luan, C., Xu, Z., Lu, Z., Roy, V.A.L. , Zhang, W. and Lee, C.-S. (2012) Correction to Arrays of ZnO/ZnxCd1–xSe nanocables: band gap engineering and photovoltaic applications. Nano Letters, 12(4), p. 2177. (doi: 10.1021/nl301181u)

Zhou, Y., Han, S.-T., Xu, Z.-X. and Roy, V.A.L. (2012) Polymer-nanoparticle hybrid dielectrics for flexible transistors and inverters. Journal of Materials Chemistry, 22(9), pp. 4060-4065. (doi: 10.1039/c2jm15256h)

Zhou, Y., Han, S.-T., Xu, Z.-X. and Roy, V.A.L. (2012) Controlled ambipolar charge transport through a self-assembled gold nanoparticle monolayer. Advanced Materials, 24(9), pp. 1247-1251. (doi: 10.1002/adma.201104375) (PMID:22298461)

Hui, W., Shi, F., Yan, K., Peng, M., Cheng, X., Luo, Y., Chen, X., Roy, V.A.L. , Cui, Y. and Wang, Z. (2012) Fe 3O4/Au/Fe 3O4 nanoflowers exhibiting tunable saturation magnetization and enhanced bioconjugation. Nanoscale, 4(3), pp. 747-751. (doi: 10.1039/c2nr11489e) (PMID:22193883)

2011

Low, K.-H., Xu, Z.-X., Xiang, H.-F., Chui, S. S.-Y., Roy, V.A.L. and Che, C.-M. (2011) Bis(5,7-dimethyl-8-hydroxyquinolinato)platinum(II) complex for efficient organic heterojunction solar cells. Chemistry: An Asian Journal, 6(12), pp. 3223-3229. (doi: 10.1002/asia.201100450) (PMID:21905232)

Han, S.-T., Zhou, Y., Xu, Z.-X., Roy, V.A.L. and Hung, T.F. (2011) Nanoparticle size dependent threshold voltage shifts in organic memory transistors. Journal of Materials Chemistry, 21(38), pp. 14575-14580. (doi: 10.1039/c1jm12113h)

Xu, J., Yang, X., Wang, H., Chen, X., Luan, C., Xu, Z., Lu, Z., Roy, V.A.L. , Zhang, W. and Lee, C.-S. (2011) Arrays of ZnO/ZnxCd1- xse nanocables: Band gap engineering and photovoltaic applications. Nano Letters, 11(10), pp. 4138-4143. (doi: 10.1021/nl201934k) (PMID:21875102)

Xu, Z.-X., Roy, V.A.L. , Low, K.-H. and Che, C.-M. (2011) Bulk heterojunction photovoltaic cells based on tetra-methyl substituted copper(ii) phthalocyanine:P3HT:PCBM composite. Chemical Communications, 47(34), pp. 9654-9656. (doi: 10.1039/c1cc13827h) (PMID:21799988)

Shi, S.L., Xu, S.J., Xu, Z.-X., Roy, V.A.L. and Che, C.-M. (2011) Broadband second harmonic generation from ZnO nano-tetrapods. Chemical Physics Letters, 506(4-6), pp. 226-229. (doi: 10.1016/j.cplett.2011.03.006)

Zhou, Y., Roy, V.A.L. , Xu, Z.-X., Kwong, H.Y., Wang, H.-B. and Lee, C.S. (2011) Low temperature processed bilayer dielectrics for low-voltage flexible saturated load inverters. Applied Physics Letters, 98(9), 092904. (doi: 10.1063/1.3558913)

Che, C.-M., Chow, C.-F., Yuen, M.-Y., Roy, V.A.L. , Lu, W., Chen, Y., Chui, S. S.-Y. and Zhu, N. (2011) Single microcrystals of organoplatinum(II) complexes with high charge-carrier mobility. Chemical Science, 2(2), pp. 216-220. (doi: 10.1039/c0sc00479k)

2010

Low, K.-H., Roy, V.A.L. , Chui, S. S.-Y., Chan, S. L.-F. and Che, C.-M. (2010) Highly conducting two-dimensional copper(i) 4-hydroxythiophenolate network. Chemical Communications, 46(39), pp. 7328-7330. (doi: 10.1039/c0cc02348e) (PMID:20740247)

Xu, Z.-X., Roy, V.A.L. , Liu, Z.-T. and Lee, C.S. (2010) Importance of molecular alignment for organic photovoltaic devices. Applied Physics Letters, 97(16), 163301. (doi: 10.1063/1.3502598)

Low, K.-H., Li, C.-H., Roy, V. A.L. , Chui, S. S.-Y., Lai-Fung Chan, S. and Che, C.-M. (2010) Homoleptic copper(I) phenylselenolate polymer as a single-source precursor for Cu2Se nanocrystals. Structure, photoluminescence and application in field-effect transistor. Chemical Science, 1(4), pp. 515-518. (doi: 10.1039/c0sc00212g)

Lei, K.-L., Chow, C.-F., Tsang, K.-C., Lei, E. N.Y., Roy, V.A.L. , Lam, M. H.W., Lee, C.S., Pun, E.Y.B. and Li, J. (2010) Long aliphatic chain coated rare-earth nanocrystal as polymer-based optical waveguide amplifiers. Journal of Materials Chemistry, 20(35), pp. 7526-7529. (doi: 10.1039/c0jm00706d)

Chui, S. S.-Y., Low, K.-H., Lu, J., Roy, V.A.L. , Chan, S. L.-F. and Che, C.-M. (2010) Homoleptic platinum(II) and palladium(II) organothiolates and phenylselenolates: solvothermal synthesis, structural determination, optical properties, and single-source precursors for PdSe and PdS nanocrystals. Chemistry: An Asian Journal, 5(9), pp. 2062-2074. (doi: 10.1002/asia.201000233) (PMID:20665775)

Chow, C.-F., Roy, V.A.L. , Ye, Z., Lam, M. H.W., Lee, C.S. and Lau, K.C. (2010) Novel high proton conductive material from liquid crystalline 4-(octadecyloxy)phenylsulfonic acid. Journal of Materials Chemistry, 20(30), pp. 6245-6249. (doi: 10.1039/c0jm00523a)

Lo, M.F., Ng, T.W., Liu, T.Z., Roy, V.A.L. , Lai, S.L., Fung, M.K., Lee, C.S. and Lee, S.T. (2010) Limits of open circuit voltage in organic photovoltaic devices. Applied Physics Letters, 96(11), 113303. (doi: 10.1063/1.3360336)

Roy, V.A.L. , Lo, K. K.-W., Chow, C.-F., Chui, S. S.Y. and Lee, C.S. (2010) Alignment of charge-transfer complexes for molecular devices. Journal of Materials Chemistry, 20(3), pp. 434-438. (doi: 10.1039/b913172h)

2009

Cao, Y.L. et al. (2009) Coaxial nanocables of p-type zinc telluride nanowires sheathed with silicon oxide: Synthesis, characterization and properties. Nanotechnology, 20(45), 455702. (doi: 10.1088/0957-4484/20/45/455702)

Lu, W., Chen, Y., Roy, V.A.L. , Chui, S. S.-Y. and Che, C.-M. (2009) Supramolecular polymers and chromonic mesophases self-organized from phosphorescent cationic organoplatinum(II) complexes in water. Angewandte Chemie (International Edition), 48(41), pp. 7621-7625. (doi: 10.1002/anie.200903109) (PMID:19746377)

Xu, Z.-X., Xiang, H.-F., Roy, V.A.L. , Chui, S. S.-Y., Wang, Y., Lai, P.T. and Che, C.-M. (2009) Organic field-effect transistors fabricated with N, N′ -substituted dialkyl-1,3,8,10-tetramethylquinacridone compounds. Applied Physics Letters, 95(12), 123305. (doi: 10.1063/1.3233961)

Liu, Z.T., Lo, M.F., Wang, H.B., Ng, T.W., Roy, V.A.L. , Lee, C.S. and Lee, S.T. (2009) Influence of the donor/acceptor interface on the open-circuit voltage in organic solar cells. Applied Physics Letters, 95(9), 093307. (doi: 10.1063/1.3222975)

Wong, C.-Y., Lai, L.-M., Keybg, S.-L. and Roy, V.A.L. (2009) Trends for the crystallinity, optical and electrical properties of post-thermal annealed ZnO nanorods. Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 164(2), pp. 80-84. (doi: 10.1016/j.mseb.2009.07.007)

Han, J., Chang, X.-Y., Zhu, L.-R., Pang, M.-L., Meng, J.-B., Chui, S. S.-Y., Lai, S.-W. and Roy, V.A.L. (2009) Microwave-assisted synthesis, structure, and tunable liquid-crystal properties of 2, 5-diaryl-1, 3, 4-thiadiazole derivatives through peripheral n-alkoxy chains. Chemistry: An Asian Journal, 4(7), pp. 1099-1107. (doi: 10.1002/asia.200800440) (PMID:19492397)

2008

Yuen, M.-Y. et al. (2008) Semiconducting and electroluminescent nanowires self-assembled from organoplatinum(II) complexes. Angewandte Chemie (International Edition), 47(51), pp. 9895-9899. (doi: 10.1002/anie.200802981) (PMID:19006156)

Xu, Z.-X., Xiang, H.-F., Roy, V.A.L. , Chui, S. S.-Y., Che, C.-M. and Lai, P.T. (2008) Field-effect transistor fabricated with nickel(II) etioporphyrin-I micrometer-sized crystals. Applied Physics Letters, 93(22), 223305. (doi: 10.1063/1.3040319)

So, M.-H., Roy, V.A.L. , Xu, Z.-X., Chui, S. S.-Y., Yuen, M.-Y., Ho, C.-M. and Che, C.-M. (2008) Controlled self-assembly of functional metal octaethylporphyrin 1D nanowires by solution-phase precipitative method. Chemistry: An Asian Journal, 3(11), pp. 1968-1978. (doi: 10.1002/asia.200800162) (PMID:18767102)

Wong, C.-Y., Lai, L.-M., Leung, S.-L., Roy, V.A.L. and Pin, E. Y.-B. (2008) Ambipolar charge transport and electroluminescence properties of ZnO nanorods. Applied Physics Letters, 93(2), 023502. (doi: 10.1063/1.2957671)

Che, C.-M., Xiang, H.-F., Chui, S. S.-Y., Xu, Z.-X., Roy, V.A.L. , Yan, J. J., Fu, W.-F., Lai, P.T. and Williams, I. D. (2008) A high-performance organic field-effect transistor based on platinum(II) porphyrin: peripheral substituents on porphyrin ligand significantly affect film structure and charge mobility. Chemistry: An Asian Journal, 3(7), pp. 1092-1103. (doi: 10.1002/asia.200800011) (PMID:18528916)

Stallinga, P., Roy, V.A.L. , Xu, Z.-X., Xiang, H.-F. and Che, C.-M. (2008) Metal-insulator-metal transistors. Advanced Materials, 20(11), pp. 2120-2124. (doi: 10.1002/adma.200702525)

Xiang, H.-F., Xu, Z.-X., Roy, V.A.L. , Yan, B.-P., Chan, S.-C., Che, C.-M. and Lai, P.T. (2008) Deep-red to near-infrared electrophosphorescence based on bis(8-hydroxyquinolato) platinum(II) complexes. Applied Physics Letters, 92(16), 163305. (doi: 10.1063/1.2906892)

Roy, V.A.L. , Wong, E. L.-M., Ko, B. C.-B., Chao, C.-T., Yan, S.-C., Yan, B., Wu, J.-C. and Che, C.-M. (2008) Ambipolar charge transport in DNA molecules. Advanced Materials, 20(7), pp. 1258-1262. (doi: 10.1002/adma.200701179)

Che, C.-M., Li, C.-H., Chui, S. S.-Y., Roy, V.A.L. and Low, K.-H. (2008) Homoleptic copper(I) arylthiolates as a new class of p-type charge carriers: structures and charge mobility studies. Chemistry: A European Journal, 14(10), pp. 2965-2975. (doi: 10.1002/chem.200700723) (PMID:18350558)

Xiang, H.-F. et al. (2008) Star-configured carbazole as an efficient near-ultraviolet emitter and hole-transporting material for organic light-emitting devices. Applied Physics Letters, 92(7), 073305. (doi: 10.1063/1.2841063)

2007

Chen, W.-B., Xiang, H.-F., Xu, Z.-X., Yan, B.-P., Roy, V.A.L. and Che, C.-M. (2007) Improving efficiency of organic photovoltaic cells with pentacene-doped CuPc layer. Applied Physics Letters, 91(19), 191109. (doi: 10.1063/1.2806195)

Yan, B.-P., Cheung, C.C.C., Kui, S.C.F., Xiang, H.-F., Roy, V.A.L. , Xu, S.-J. and Che, C.-M. (2007) Efficient white organic light-emitting devices based on phosphorescent platinum(II)/fluorescent dual-emitting layers. Advanced Materials, 19(21), pp. 3599-3603. (doi: 10.1002/adma.200602683)

Yan, B.-P., Cheung, C. C.C., Kui, S. C.F., Roy, V.A.L. and Che, C.-M. (2007) High-efficiency orange and yellow organic light-emitting devices using platinum(II) complexes containing extended π -conjugated cyclometalated ligands as dopant materials. Applied Physics Letters, 91(6), 063508. (doi: 10.1063/1.2768868)

Xu, Z.-X. and Roy, V.A.L. (2007) Nanocomposite field effect transistors based on zinc oxide/polymer blends. Applied Physics Letters, 90(22), 223509. (doi: 10.1063/1.2740478)

Xiang, H.-F., Xu, Z.-X., Roy, V.A.L. , Che, C.-M. and Lai, P.T. (2007) Method for measurement of the density of thin films of small organic molecules. Review of Scientific Instruments, 78(3), 034104. (doi: 10.1063/1.2712932)

2006

Lu, W., Roy, V.A.L. and Che, C.-M. (2006) Self-assembled nanostructures with tridentate cyclometalated platinum(II) complexes. Chemical Communications, 2006(38), pp. 3972-3974. (doi: 10.1039/b607422g) (PMID:17003869)

2005

Xu, Z.-X., Lin, J.-D., Roy, V.A.L. , Ou, Y. and Liao, D.-W. (2005) Catalytic synthesis of carbon nanotubes and carbon spheres using Kaolin supported catalyst. Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 123(2), pp. 102-106. (doi: 10.1016/j.mseb.2005.07.012)

Roy, V.A.L. , Zhi, Y.-G., Xu, Z.-X., Yu, S.-C., Chan, P.W.H. and Che, C.-M. (2005) Functionalized arylacetylene oligomers for organic thin-film transistors (OTFTs). Advanced Materials, 17(10), pp. 1258-1261. (doi: 10.1002/adma.200401998)

2004

Santato, C. et al. (2004) Tetracene-based organic light-emitting transistors: optoelectronic properties and electron injection mechanism. Synthetic Metals, 146(3), pp. 329-334. (doi: 10.1016/j.synthmet.2004.08.028)

Zheng, R.K., Liu, H., Zhang, X.X., Roy, V.A.L. and Djurišić, A.B. (2004) Exchange bias and the origin of magnetism in Mn-doped ZnO tetrapods. Applied Physics Letters, 85(13), pp. 2589-2591. (doi: 10.1063/1.1795366)

Djurišić, A.B., Choy, W.C.H., Roy, V.A.L. , Leung, Y.H., Kwong, C.Y., Cheah, K.W., Gundu Rao, T.K., Chan, W.K., Fei Lui, H. and Surya, C. (2004) Photoluminescence and electron paramagnetic resonance of ZnO tetrapod structures. Advanced Functional Materials, 14(9), pp. 856-864. (doi: 10.1002/adfm.200305082)

Kwong, C.Y., Djurišić, A.B., Roy, V.A.L. , Lai, P.T. and Chan, W.K. (2004) Influence of the substrate temperature to the performance of tris (8-hydroxyquinoline) aluminum based organic light emitting diodes. Thin Solid Films, 458(1-2), pp. 281-286. (doi: 10.1016/j.tsf.2004.01.042)

Roy, V.A.L. , Djurišić, A.B., Liu, H., Zhang, X.X., Leung, Y.H., Xie, M.H., Gao, J., Lui, H.F. and Surya, C. (2004) Magnetic properties of Mn doped ZnO tetrapod structures. Applied Physics Letters, 84(5), pp. 756-758. (doi: 10.1063/1.1645312)

Roy, V.A.L. , Pode, R.B., Rao, T.K.G., Djurišić, A.B. and Baldacchini, G. (2004) Optical and ESR studies of Tris(8-hydroxyquinoline)aluminum. Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 106(1), pp. 85-88. (doi: 10.1016/j.mseb.2003.09.017)

2003

Roy, V.A.L. , Djurišić, A.B., Chan, W.K., Gao, J., Lui, H.F. and Surya, C. (2003) Luminescent and structural properties of ZnO nanorods prepared under different conditions. Applied Physics Letters, 83(1), pp. 141-143. (doi: 10.1063/1.1589184)

2002

Roy, V.A.L. and Pode, R.B. (2002) Optical studies of doped aluminum tris (8-hydroxy quinoline) thin films. Thin Solid Films, 417(1-2), pp. 180-182. (doi: 10.1016/S0040-6090(02)00643-0)

This list was generated on Thu Apr 9 04:19:04 2020 BST.
Jump to: Articles
Number of items: 70.

Articles

Karthikeyan, V., Surjadi, J. U., Wong, J. C.K., Kannan, V., Lam, K.-H., Chen, X., Lu, Y. and Roy, V. A.L. (2020) Wearable and flexible thin film thermoelectric module for multi-scale energy harvesting. Journal of Power Sources, 455, 227983. (doi: 10.1016/j.jpowsour.2020.227983)

Oo, S. L., Ilyas, A.-M., Karthikeyan, V., Arava, C. M., Kong, E. Y., Yeung, C.-C., Chen, X., Yu, P. K.N. and Vellaisamy, R. A.L. (2020) Gating a single cell: a label-free and real-time measurement method for cellular progression. Analytical Chemistry, 92(2), pp. 1738-1745. (doi: 10.1021/acs.analchem.9b03136) (PMID:31904934)

Sun, Q.-J., Zhao, X.-H., Zhou, Y., Yeung, C.-C., Wu, W., Venkatesh, S., Xu, Z.-X., Wylie, J. J., Li, W.-J. and Roy, V. A.L. (2019) Fingertip‐skin‐inspired highly sensitive and multifunctional sensor with hierarchically structured conductive graphite/polydimethylsiloxane foams. Advanced Functional Materials, 29(18), 1808829. (doi: 10.1002/adfm.201808829)

Venkatesh, S. et al. (2018) Dual-gated transistor platform for on-site detection of lead ions at trace levels. Analytical Chemistry, 90(12), pp. 7399-7405. (doi: 10.1021/acs.analchem.8b00841) (PMID:29812910)

Venkatesh, S., Yeung, C.-C., Sun, Q.-J., Zhuang, J., Li, T., Li, R. K.Y. and Roy, V. A.L. (2018) Selective and sensitive onsite detection of phthalates in common solvents. Sensors and Actuators B: Chemical, 259, pp. 650-657. (doi: 10.1016/j.snb.2017.12.107)

Ye, F., Zhong, X., Cai, X.-M., Huang, L.-B., Roy, V.A.L. , Jing, S.-Y., Zhang, D.-P., Fan, P., Luo, J.-T. and Tian, X.-Q. (2013) Structural, electrical, and optical properties of Zn1-xSn xO thin films deposited by reactive co-sputtering. Physica Status Solidi A: Applications and Materials Science, 210(11), pp. 2404-2408. (doi: 10.1002/pssa.201329266)

Zhou, Y., Han, S.-T., Yan, Y., Huang, L.-B., Zhou, L., Huang, J. and Roy, V.A.L. (2013) Solution processed molecular floating gate for flexible flash memories. Scientific Reports, 3, 3093. (doi: 10.1038/srep03093) (PMID:24172758) (PMCID:PMC3813938)

Han, S.-T., Zhou, Y. and Roy, V.A.L. (2013) Towards the development of flexible non-volatile memories. Advanced Materials, 25(38), pp. 5425-5449. (doi: 10.1002/adma.201301361) (PMID:24038631)

Han, S.-T., Zhou, Y., Yang, Q.-D., Lee, C.-S. and Roy, V.A.L. (2013) Poly(3-hexylthiophene)/gold nanoparticle hybrid system with an enhanced photoresponse for light-controlled electronic devices. Particle and Particle Systems Characterization, 30(7), pp. 599-605. (doi: 10.1002/ppsc.201300005)

Zhou, Y., Han, S.-T., Huang, L.-B., Huang, J., Yan, Y., Zhou, L. and Roy, V.A.L. (2013) A low voltage programmable unipolar inverter with a gold nanoparticle monolayer on plastic. Nanotechnology, 24(20), 205202. (doi: 10.1088/0957-4484/24/20/205202)

Zhou, Y., Han, S.-T., Xu, Z.-X. and Roy, V.A.L. (2013) The strain and thermal induced tunable charging phenomenon in low power flexible memory arrays with a gold nanoparticle monolayer. Nanoscale, 5(5), pp. 1972-1979. (doi: 10.1039/c2nr32579a)

To, W.-K., Fu, J., Yang, X., Roy, V.A.L. and Huang, Z. (2012) Porosification-reduced optical trapping of silicon nanostructures. Nanoscale, 4(19), pp. 5835-5839. (doi: 10.1039/c2nr31680c)

Zhou, Y., Han, S.-T., Xu, Z.-X. and Roy, V.A.L. (2012) Low voltage flexible nonvolatile memory with gold nanoparticles embedded in poly(methyl methacrylate). Nanotechnology, 23(34), 344014. (doi: 10.1088/0957-4484/23/34/344014)

Zhou, Y., Han, S.-T., Xu, Z.-X., Yang, X.-B., Ng, H.-P., Huang, L.-B. and Roy, V.A.L. (2012) Functional high-k nanocomposite dielectrics for flexible transistors and inverters with excellent mechanical properties. Journal of Materials Chemistry, 22(28), pp. 14246-14253. (doi: 10.1039/c2jm31813j)

Han, S.-T., Zhou, Y., Xu, Z.-X. and Roy, V.A.L. (2012) Controllable threshold voltage shifts of polymer transistors and inverters by utilizing gold nanoparticles. Applied Physics Letters, 101(3), 033306. (doi: 10.1063/1.4737422)

Han, S.-T., Zhou, Y., Xu, Z.-X., Huang, L.-B., Yang, X.-B. and Roy, V.A.L. (2012) Microcontact printing of ultrahigh density gold nanoparticle monolayer for flexible flash memories. Advanced Materials, 24(26), pp. 3556-3561. (doi: 10.1002/adma.201201195) (PMID:22678769)

Chen, W.-B., Zu, Z.-X., Li, K., Chui, S. S.-Y., Roy, V.A.L. , Lai, P.-T. and Che, C.-M. (2012) Improving the performance of polymer solar cells by adjusting the crystallinity and nanoscale phase separation. Chinese Physics B, 21(7), 078401. (doi: 10.1088/1674-1056/21/7/078401)

Ng, C.K.M., Chong, E.Y.W., Roy, V.A.L. , Cheung, K.M.C., Yeung, K.W.K. and Yu, K.N. (2012) Fabrication of micropillar substrates using replicas of alpha-particle irradiated and chemically etched PADC films. Applied Radiation and Isotopes, 70(7), pp. 1432-1435. (doi: 10.1016/j.apradiso.2011.11.019)

Zhou, L., Xu, Z.-X., Zhou, Y., Feng, Y., Zhou, X.-G., Xiang, H.-F. and Roy, V.A.L. (2012) Structure-charge transport relationship of 5,15-dialkylated porphyrins. Chemical Communications, 48(42), pp. 5139-5141. (doi: 10.1039/c2cc31137b) (PMID:22517491)

Xu, J., Yang, X., Wang, H., Chen, X., Luan, C., Xu, Z., Lu, Z., Roy, V.A.L. , Zhang, W. and Lee, C.-S. (2012) Correction to Arrays of ZnO/ZnxCd1–xSe nanocables: band gap engineering and photovoltaic applications. Nano Letters, 12(4), p. 2177. (doi: 10.1021/nl301181u)

Zhou, Y., Han, S.-T., Xu, Z.-X. and Roy, V.A.L. (2012) Polymer-nanoparticle hybrid dielectrics for flexible transistors and inverters. Journal of Materials Chemistry, 22(9), pp. 4060-4065. (doi: 10.1039/c2jm15256h)

Zhou, Y., Han, S.-T., Xu, Z.-X. and Roy, V.A.L. (2012) Controlled ambipolar charge transport through a self-assembled gold nanoparticle monolayer. Advanced Materials, 24(9), pp. 1247-1251. (doi: 10.1002/adma.201104375) (PMID:22298461)

Hui, W., Shi, F., Yan, K., Peng, M., Cheng, X., Luo, Y., Chen, X., Roy, V.A.L. , Cui, Y. and Wang, Z. (2012) Fe 3O4/Au/Fe 3O4 nanoflowers exhibiting tunable saturation magnetization and enhanced bioconjugation. Nanoscale, 4(3), pp. 747-751. (doi: 10.1039/c2nr11489e) (PMID:22193883)

Low, K.-H., Xu, Z.-X., Xiang, H.-F., Chui, S. S.-Y., Roy, V.A.L. and Che, C.-M. (2011) Bis(5,7-dimethyl-8-hydroxyquinolinato)platinum(II) complex for efficient organic heterojunction solar cells. Chemistry: An Asian Journal, 6(12), pp. 3223-3229. (doi: 10.1002/asia.201100450) (PMID:21905232)

Han, S.-T., Zhou, Y., Xu, Z.-X., Roy, V.A.L. and Hung, T.F. (2011) Nanoparticle size dependent threshold voltage shifts in organic memory transistors. Journal of Materials Chemistry, 21(38), pp. 14575-14580. (doi: 10.1039/c1jm12113h)

Xu, J., Yang, X., Wang, H., Chen, X., Luan, C., Xu, Z., Lu, Z., Roy, V.A.L. , Zhang, W. and Lee, C.-S. (2011) Arrays of ZnO/ZnxCd1- xse nanocables: Band gap engineering and photovoltaic applications. Nano Letters, 11(10), pp. 4138-4143. (doi: 10.1021/nl201934k) (PMID:21875102)

Xu, Z.-X., Roy, V.A.L. , Low, K.-H. and Che, C.-M. (2011) Bulk heterojunction photovoltaic cells based on tetra-methyl substituted copper(ii) phthalocyanine:P3HT:PCBM composite. Chemical Communications, 47(34), pp. 9654-9656. (doi: 10.1039/c1cc13827h) (PMID:21799988)

Shi, S.L., Xu, S.J., Xu, Z.-X., Roy, V.A.L. and Che, C.-M. (2011) Broadband second harmonic generation from ZnO nano-tetrapods. Chemical Physics Letters, 506(4-6), pp. 226-229. (doi: 10.1016/j.cplett.2011.03.006)

Zhou, Y., Roy, V.A.L. , Xu, Z.-X., Kwong, H.Y., Wang, H.-B. and Lee, C.S. (2011) Low temperature processed bilayer dielectrics for low-voltage flexible saturated load inverters. Applied Physics Letters, 98(9), 092904. (doi: 10.1063/1.3558913)

Che, C.-M., Chow, C.-F., Yuen, M.-Y., Roy, V.A.L. , Lu, W., Chen, Y., Chui, S. S.-Y. and Zhu, N. (2011) Single microcrystals of organoplatinum(II) complexes with high charge-carrier mobility. Chemical Science, 2(2), pp. 216-220. (doi: 10.1039/c0sc00479k)

Low, K.-H., Roy, V.A.L. , Chui, S. S.-Y., Chan, S. L.-F. and Che, C.-M. (2010) Highly conducting two-dimensional copper(i) 4-hydroxythiophenolate network. Chemical Communications, 46(39), pp. 7328-7330. (doi: 10.1039/c0cc02348e) (PMID:20740247)

Xu, Z.-X., Roy, V.A.L. , Liu, Z.-T. and Lee, C.S. (2010) Importance of molecular alignment for organic photovoltaic devices. Applied Physics Letters, 97(16), 163301. (doi: 10.1063/1.3502598)

Low, K.-H., Li, C.-H., Roy, V. A.L. , Chui, S. S.-Y., Lai-Fung Chan, S. and Che, C.-M. (2010) Homoleptic copper(I) phenylselenolate polymer as a single-source precursor for Cu2Se nanocrystals. Structure, photoluminescence and application in field-effect transistor. Chemical Science, 1(4), pp. 515-518. (doi: 10.1039/c0sc00212g)

Lei, K.-L., Chow, C.-F., Tsang, K.-C., Lei, E. N.Y., Roy, V.A.L. , Lam, M. H.W., Lee, C.S., Pun, E.Y.B. and Li, J. (2010) Long aliphatic chain coated rare-earth nanocrystal as polymer-based optical waveguide amplifiers. Journal of Materials Chemistry, 20(35), pp. 7526-7529. (doi: 10.1039/c0jm00706d)

Chui, S. S.-Y., Low, K.-H., Lu, J., Roy, V.A.L. , Chan, S. L.-F. and Che, C.-M. (2010) Homoleptic platinum(II) and palladium(II) organothiolates and phenylselenolates: solvothermal synthesis, structural determination, optical properties, and single-source precursors for PdSe and PdS nanocrystals. Chemistry: An Asian Journal, 5(9), pp. 2062-2074. (doi: 10.1002/asia.201000233) (PMID:20665775)

Chow, C.-F., Roy, V.A.L. , Ye, Z., Lam, M. H.W., Lee, C.S. and Lau, K.C. (2010) Novel high proton conductive material from liquid crystalline 4-(octadecyloxy)phenylsulfonic acid. Journal of Materials Chemistry, 20(30), pp. 6245-6249. (doi: 10.1039/c0jm00523a)

Lo, M.F., Ng, T.W., Liu, T.Z., Roy, V.A.L. , Lai, S.L., Fung, M.K., Lee, C.S. and Lee, S.T. (2010) Limits of open circuit voltage in organic photovoltaic devices. Applied Physics Letters, 96(11), 113303. (doi: 10.1063/1.3360336)

Roy, V.A.L. , Lo, K. K.-W., Chow, C.-F., Chui, S. S.Y. and Lee, C.S. (2010) Alignment of charge-transfer complexes for molecular devices. Journal of Materials Chemistry, 20(3), pp. 434-438. (doi: 10.1039/b913172h)

Cao, Y.L. et al. (2009) Coaxial nanocables of p-type zinc telluride nanowires sheathed with silicon oxide: Synthesis, characterization and properties. Nanotechnology, 20(45), 455702. (doi: 10.1088/0957-4484/20/45/455702)

Lu, W., Chen, Y., Roy, V.A.L. , Chui, S. S.-Y. and Che, C.-M. (2009) Supramolecular polymers and chromonic mesophases self-organized from phosphorescent cationic organoplatinum(II) complexes in water. Angewandte Chemie (International Edition), 48(41), pp. 7621-7625. (doi: 10.1002/anie.200903109) (PMID:19746377)

Xu, Z.-X., Xiang, H.-F., Roy, V.A.L. , Chui, S. S.-Y., Wang, Y., Lai, P.T. and Che, C.-M. (2009) Organic field-effect transistors fabricated with N, N′ -substituted dialkyl-1,3,8,10-tetramethylquinacridone compounds. Applied Physics Letters, 95(12), 123305. (doi: 10.1063/1.3233961)

Liu, Z.T., Lo, M.F., Wang, H.B., Ng, T.W., Roy, V.A.L. , Lee, C.S. and Lee, S.T. (2009) Influence of the donor/acceptor interface on the open-circuit voltage in organic solar cells. Applied Physics Letters, 95(9), 093307. (doi: 10.1063/1.3222975)

Wong, C.-Y., Lai, L.-M., Keybg, S.-L. and Roy, V.A.L. (2009) Trends for the crystallinity, optical and electrical properties of post-thermal annealed ZnO nanorods. Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 164(2), pp. 80-84. (doi: 10.1016/j.mseb.2009.07.007)

Han, J., Chang, X.-Y., Zhu, L.-R., Pang, M.-L., Meng, J.-B., Chui, S. S.-Y., Lai, S.-W. and Roy, V.A.L. (2009) Microwave-assisted synthesis, structure, and tunable liquid-crystal properties of 2, 5-diaryl-1, 3, 4-thiadiazole derivatives through peripheral n-alkoxy chains. Chemistry: An Asian Journal, 4(7), pp. 1099-1107. (doi: 10.1002/asia.200800440) (PMID:19492397)

Yuen, M.-Y. et al. (2008) Semiconducting and electroluminescent nanowires self-assembled from organoplatinum(II) complexes. Angewandte Chemie (International Edition), 47(51), pp. 9895-9899. (doi: 10.1002/anie.200802981) (PMID:19006156)

Xu, Z.-X., Xiang, H.-F., Roy, V.A.L. , Chui, S. S.-Y., Che, C.-M. and Lai, P.T. (2008) Field-effect transistor fabricated with nickel(II) etioporphyrin-I micrometer-sized crystals. Applied Physics Letters, 93(22), 223305. (doi: 10.1063/1.3040319)

So, M.-H., Roy, V.A.L. , Xu, Z.-X., Chui, S. S.-Y., Yuen, M.-Y., Ho, C.-M. and Che, C.-M. (2008) Controlled self-assembly of functional metal octaethylporphyrin 1D nanowires by solution-phase precipitative method. Chemistry: An Asian Journal, 3(11), pp. 1968-1978. (doi: 10.1002/asia.200800162) (PMID:18767102)

Wong, C.-Y., Lai, L.-M., Leung, S.-L., Roy, V.A.L. and Pin, E. Y.-B. (2008) Ambipolar charge transport and electroluminescence properties of ZnO nanorods. Applied Physics Letters, 93(2), 023502. (doi: 10.1063/1.2957671)

Che, C.-M., Xiang, H.-F., Chui, S. S.-Y., Xu, Z.-X., Roy, V.A.L. , Yan, J. J., Fu, W.-F., Lai, P.T. and Williams, I. D. (2008) A high-performance organic field-effect transistor based on platinum(II) porphyrin: peripheral substituents on porphyrin ligand significantly affect film structure and charge mobility. Chemistry: An Asian Journal, 3(7), pp. 1092-1103. (doi: 10.1002/asia.200800011) (PMID:18528916)

Stallinga, P., Roy, V.A.L. , Xu, Z.-X., Xiang, H.-F. and Che, C.-M. (2008) Metal-insulator-metal transistors. Advanced Materials, 20(11), pp. 2120-2124. (doi: 10.1002/adma.200702525)

Xiang, H.-F., Xu, Z.-X., Roy, V.A.L. , Yan, B.-P., Chan, S.-C., Che, C.-M. and Lai, P.T. (2008) Deep-red to near-infrared electrophosphorescence based on bis(8-hydroxyquinolato) platinum(II) complexes. Applied Physics Letters, 92(16), 163305. (doi: 10.1063/1.2906892)

Roy, V.A.L. , Wong, E. L.-M., Ko, B. C.-B., Chao, C.-T., Yan, S.-C., Yan, B., Wu, J.-C. and Che, C.-M. (2008) Ambipolar charge transport in DNA molecules. Advanced Materials, 20(7), pp. 1258-1262. (doi: 10.1002/adma.200701179)

Che, C.-M., Li, C.-H., Chui, S. S.-Y., Roy, V.A.L. and Low, K.-H. (2008) Homoleptic copper(I) arylthiolates as a new class of p-type charge carriers: structures and charge mobility studies. Chemistry: A European Journal, 14(10), pp. 2965-2975. (doi: 10.1002/chem.200700723) (PMID:18350558)

Xiang, H.-F. et al. (2008) Star-configured carbazole as an efficient near-ultraviolet emitter and hole-transporting material for organic light-emitting devices. Applied Physics Letters, 92(7), 073305. (doi: 10.1063/1.2841063)

Chen, W.-B., Xiang, H.-F., Xu, Z.-X., Yan, B.-P., Roy, V.A.L. and Che, C.-M. (2007) Improving efficiency of organic photovoltaic cells with pentacene-doped CuPc layer. Applied Physics Letters, 91(19), 191109. (doi: 10.1063/1.2806195)

Yan, B.-P., Cheung, C.C.C., Kui, S.C.F., Xiang, H.-F., Roy, V.A.L. , Xu, S.-J. and Che, C.-M. (2007) Efficient white organic light-emitting devices based on phosphorescent platinum(II)/fluorescent dual-emitting layers. Advanced Materials, 19(21), pp. 3599-3603. (doi: 10.1002/adma.200602683)

Yan, B.-P., Cheung, C. C.C., Kui, S. C.F., Roy, V.A.L. and Che, C.-M. (2007) High-efficiency orange and yellow organic light-emitting devices using platinum(II) complexes containing extended π -conjugated cyclometalated ligands as dopant materials. Applied Physics Letters, 91(6), 063508. (doi: 10.1063/1.2768868)

Xu, Z.-X. and Roy, V.A.L. (2007) Nanocomposite field effect transistors based on zinc oxide/polymer blends. Applied Physics Letters, 90(22), 223509. (doi: 10.1063/1.2740478)

Xiang, H.-F., Xu, Z.-X., Roy, V.A.L. , Che, C.-M. and Lai, P.T. (2007) Method for measurement of the density of thin films of small organic molecules. Review of Scientific Instruments, 78(3), 034104. (doi: 10.1063/1.2712932)

Lu, W., Roy, V.A.L. and Che, C.-M. (2006) Self-assembled nanostructures with tridentate cyclometalated platinum(II) complexes. Chemical Communications, 2006(38), pp. 3972-3974. (doi: 10.1039/b607422g) (PMID:17003869)

Xu, Z.-X., Lin, J.-D., Roy, V.A.L. , Ou, Y. and Liao, D.-W. (2005) Catalytic synthesis of carbon nanotubes and carbon spheres using Kaolin supported catalyst. Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 123(2), pp. 102-106. (doi: 10.1016/j.mseb.2005.07.012)

Roy, V.A.L. , Zhi, Y.-G., Xu, Z.-X., Yu, S.-C., Chan, P.W.H. and Che, C.-M. (2005) Functionalized arylacetylene oligomers for organic thin-film transistors (OTFTs). Advanced Materials, 17(10), pp. 1258-1261. (doi: 10.1002/adma.200401998)

Santato, C. et al. (2004) Tetracene-based organic light-emitting transistors: optoelectronic properties and electron injection mechanism. Synthetic Metals, 146(3), pp. 329-334. (doi: 10.1016/j.synthmet.2004.08.028)

Zheng, R.K., Liu, H., Zhang, X.X., Roy, V.A.L. and Djurišić, A.B. (2004) Exchange bias and the origin of magnetism in Mn-doped ZnO tetrapods. Applied Physics Letters, 85(13), pp. 2589-2591. (doi: 10.1063/1.1795366)

Djurišić, A.B., Choy, W.C.H., Roy, V.A.L. , Leung, Y.H., Kwong, C.Y., Cheah, K.W., Gundu Rao, T.K., Chan, W.K., Fei Lui, H. and Surya, C. (2004) Photoluminescence and electron paramagnetic resonance of ZnO tetrapod structures. Advanced Functional Materials, 14(9), pp. 856-864. (doi: 10.1002/adfm.200305082)

Kwong, C.Y., Djurišić, A.B., Roy, V.A.L. , Lai, P.T. and Chan, W.K. (2004) Influence of the substrate temperature to the performance of tris (8-hydroxyquinoline) aluminum based organic light emitting diodes. Thin Solid Films, 458(1-2), pp. 281-286. (doi: 10.1016/j.tsf.2004.01.042)

Roy, V.A.L. , Djurišić, A.B., Liu, H., Zhang, X.X., Leung, Y.H., Xie, M.H., Gao, J., Lui, H.F. and Surya, C. (2004) Magnetic properties of Mn doped ZnO tetrapod structures. Applied Physics Letters, 84(5), pp. 756-758. (doi: 10.1063/1.1645312)

Roy, V.A.L. , Pode, R.B., Rao, T.K.G., Djurišić, A.B. and Baldacchini, G. (2004) Optical and ESR studies of Tris(8-hydroxyquinoline)aluminum. Materials Science and Engineering B: Solid-State Materials for Advanced Technology, 106(1), pp. 85-88. (doi: 10.1016/j.mseb.2003.09.017)

Roy, V.A.L. , Djurišić, A.B., Chan, W.K., Gao, J., Lui, H.F. and Surya, C. (2003) Luminescent and structural properties of ZnO nanorods prepared under different conditions. Applied Physics Letters, 83(1), pp. 141-143. (doi: 10.1063/1.1589184)

Roy, V.A.L. and Pode, R.B. (2002) Optical studies of doped aluminum tris (8-hydroxy quinoline) thin films. Thin Solid Films, 417(1-2), pp. 180-182. (doi: 10.1016/S0040-6090(02)00643-0)

This list was generated on Thu Apr 9 04:19:04 2020 BST.

Grants

 

Awards 

·         TRIL-Research Fellow (2003-04) awarded by The International Centre for Theoretical Physics (ICTP, UNESCO institution), Trieste, Italy.  

·         Excellent Product Award (2011, 12, 13 & 18) at China Hi-Tech Fair, The PRC's Ministry of Commerce 

·         1000 Talent award (zeijiang), China 

·         Gold Medal at the 47th International Exhibition of Inventions of Geneva for the invention “Sensor platform for rapid analysis of targets from food contaminants to disease biomarkers using disposable testing strips”. 

 

Grants

Project Title:  Investigation on Carbon Based Terahertz Reflectors
Grant Type:  Strategic Research Grant 

 

Project Title:  On-site Detection of Heavy Metal Ions in Drinking Water
Grant Type:  ARG - Applied Research Grant

 

Project Title:  Development of Flexible Mems Pressure Sensors using Hierarchical Surface Structures for Texture Roughness Identification
Grant Type:  GRF - RGC General Research Fund

 

Project Title:  Sensing Device for Six Common Phthalates in Plastic
 
Grant Type:  ITF - Innovation and Technology Commission — Innovation and Technology Fund

 

Project Title:  Thermoelectric Cooling for the Construction of Solid-state Air Conditioner in the Lift
Grant Type:  ConRes-RO - Contract Research

Additional information

We are looking for PhD students to work on the following topics,

  • Point of Care (PoC) diagnostic tools for onsite testing of cancer biomarkers and contaminants in food and water
  • Wearable devices for real-time monitoring of human motions using piezoresistive and thermoelectric sensors.
  • Engineering of materials for the application in neuromorphic devices

If you are interested to work with an interdisciplinary team, please contact

Roy.Vellaisamy@glasgow.ac.uk