Research Interests
Two-Dimensional [2D] Layered Materials, van der Waals Stacking of 2D Materials, Low-Dimensional Materials [LDMs], 2D Perovskites, Single Crystal Growth of Novel Materials, Nanoscale Devices [Transistors, Photodetectors, Solar Cells & LEDs], Flexible, Lightweight, and Foldable Optoelectronics, Bio-Sensors.
BioSketch
Research
The dHvA effect in Sn-doped PbTe Topological Crystalline Insulator
2025
D. Miertschin, T. Nguyen, S. Zhang, M. Lee, S. Krishnamoorthi, R. K. Ulaganathan, R. Sankar, D. E. Graf. K. Shrestha*. | IOP Publishing
Journal: J. Phys.: Condens. Matter
Optical Probe of Magnetic Ordering Structure in Mn-substituted NiPS3
2024
J, -H. Lee, S. Lee, Y. Choi, L. Gries, R. Klingeler, K. Raju, R. K. Ulaganathan, R. Sankar, M.-J. Seong, K.-Y. Choi* | Wiley
Journal: Advanced Functional Materials [IF-18.5] Pages: 2405153 , Volumes: 34 ,
Interplay between Magnetic and Lattice Excitations and Emergent Multiple Phase Transitions in MnPSe3-xSx
2024
D. Kumar, N. T. Hoang, Y. S. Y. Choi*, K. Raju, R. K. Ulaganathan, R. Sankar | American Physical Society [APS]
Journal: Physical Review B [IF-3.2] Pages: 064414 , Volumes: 110 ,
Structural, Magnetic and Electronic Properties of GdAsSe Single Crystal: Experimental and Theoretical Studies
2024
R. Kalaivanan, B. D. S. Chandana, R. K. Ulaganathan, S. M. Ganesan, K.-Y. Choi, I. P. Muthuselvam, R. Sankar* | American Physical Society [APS]
Journal: Physical Review B [IF-3.2] Pages: 184420 , Volumes: 109 ,
Efficient Hydrogen Evolution Reaction in 2H-MoS2 Basal Planes Enhanced by Surface Electron Accumulation
2024
Krishnamoorthy, H. K. Bangolla, C.-Y. Chen, Y.-T. Huang, C. M. Cheng, R. K. Ulaganathan, R. Sankar, K.- Y. Lee, H.-Y. Du, L.-C. Chen, K.-H. Chen, R.-S. Chen* | MDPI
Journal: Catalysts [IF-3.8] Pages: 50 , Volumes: 14 ,
Molybdenum Disulfide Nanoribbons with Enhanced Edge Nonlinear Response and Photoresponsivity
2023
G. Ghimire, R. K. Ulaganathan, A. Tempez, O. Chenko, R. R. Unocic, J. Heske, D. I. Miakota, C. Xiang, M. Chaigneau, K. S. Thygesen,T. Booth, D. B. Geohegan, S. Canulescu* | Wiley
Journal: Advanced Materials [IF-27.4] Pages: 2302469 , Volumes: 35 ,
Electrical and Optoelectronic Anisotropy and Surface Electron Accumulation in ReS2 Nanostructures
2023
H. K. Bangolla, M. Y. Fakhri, C.-H. Lin, C.-M. Cheng, Y.-H. Lu, T.-Y. Fu, P. R. K. Ulaganathan, R. Sankar, R.-S. Chen* | Royal Society of Chemistry [RSC]
Journal: Nanoscale [IF-5.8] Pages: 19735 , Volumes: 15 ,
High-Performance Photodetector and Angular-Dependent Random Lasing from Long- Chain Organic Diammonium Sandwiched 2D Hybrid Perovskite Non-linear Optical Single Crystal
2023
R. K. Ulaganathan, P. K. Roy, S. M. Mhatre, R. C. Murugesan, W.-L. Chen, M.-H. Lai, A. Subramanian, C.-Y. Ling, Y.-M. Chang, A. Rozhin, C.-T. Liang, R. Sankar | Wiley
Journal: Advanced Functional Materials [IF-18.5] Pages: 2214078 , Volumes: 33 ,
Photoconduction Properties in Tungsten Disulfide Nanostructures
2023
H. K. Bangolla, Y.-C. Lee, W.-C. Shen, R. K. Ulaganathan, R. Sankar, H.-Y. Du*, Ruei-San Chen* | MDPI
Journal: Nanomaterials [IF-4.4] Pages: 2190 , Volumes: 13 ,
A novel Two-step Route to Unidirectional Growth of Multilayer MoS2 Nanoribbons
2023
D. I. Miakota, G. Ghimire, R. K. Ulaganathan, M E. Rodriguez, S. Canulescu* | Elsevier
Journal: Applied Surface Sciences [IF-6.3] Pages: 156748 , Volumes: 619 ,
Stable Formamidinium Based Centimeter Long Two-Dimensional (2D) Lead Halide Perovskite Single Crystal for Long-Live Optoelectronic Application
2022
R. K. Ulaganathan*, R. C. Murugesan* C. -Y. Lin, A. Subramanian, W.-L. Chen, Y.-M. Chang, A. Rozhin and R. Sankar* | Wiley
Journal: Advanced Functional Materials [IF-18.5] Pages: 2112277 , Volumes: 32 ,
“Extended Air, Light, and Heat Resistive Organolead Halide Perovskite Single-Crystalline Microrods for High-Performance Photodetector
2022
C.-Y. Lin, R. K. Ulaganathan*, A. Subramanian, H.-C. Weng, Y.-J. Chang, R. C. Murugesan, R. Sankar, and A. Rozhin | Royal Society of Chemistry [RSC]
Journal: Materials Advances [IF-5.2] Pages: 8771-8779 , Volumes: 3 ,
A Silicon-Based Two-Dimensional Chalcogenide of p-type Semiconducting Silicon Telluride Nanosheets for Ultrahigh Sensitive Photodetector Applications
2021
R. K. Ulaganathan*, C.-Y. Lin*, R. Sankar*, Raghavan Chinnambedu Murugesan, Ambika Subramanian, Alex Rozhin and Shaik Firdoz | Royal Society of Chemistry [RSC]
Journal: Journal of Material Chemistry C [IF-5.7] Pages: 10478-10486 , Volumes: 9 ,
A Bi-anti-ambipolar Field Effect Transistor
2021
C. R. P. Inbaraj, R. J. Mathew, R. K. Ulaganathan, R. Sankar, M. Kataria, H. Y. Lin, Y. T. Chen, M. Hofmann, C. H. Lee, Y. F. Chen | American Chemical Society [ACS]
Journal: ACS Nano [IF-15.8] Pages: 8686-8693 , Volumes: 15 ,
Staggered Band Offset Induced High-Performance Optoelectronic Devices: Atomically Thin Vertically Stacked GaSe-SnS2 van der Waals p-n Heterostructures
2021
P. Perumal, R. K. Ulaganathan, R. Sankar, L. Zhu* | Elsevier
Journal: Applied Surface Science [IF-6.3] Pages: 147480 , Volumes: 535 ,
High-performance Flexible Broadband Photodetectors Based on 2D Hafnium Selenosulfide Nanosheets
2020
R. K. Ulaganathan, R. Sankar, C. Y. Lin, R. C. Murugesan, K. Tang, F. C. Chou* | Wiley
Journal: Advanced Electronic Material [IF-5.3] Pages: 1900794 , Volumes: 6 ,
Unprecedented Random Lasing in 2D Organolead Halide Single-Crystalline Perovskite Microro
2020
R. K. Ulaganathan, P. K. Roy, R. C. Murugesan, S. Mhatre, H. I. Lin, W. L. Chen, Y. F. Chen, Y. M. Chang, R. Sankar, F. C. Chou, C. T. Liang* | Royal Society of Chemistry [RSC]
Journal: Nanoscale [IF-5.8] Pages: 18269-18277 , Volumes: 12 ,
Modulating Charge Separation with Hexagonal Boron Nitride Mediation in Vertical Van der Waals Heterostructures.
2020
C. R. P. Inbaraj, R. J. Mathew, R. K. Ulaganathan, R. Sankar, M. Kataria, H. Y. Lin, H. Y. Cheng, K. H. Lin, H. I. Lin, Y. M. Liao, F. C. Chou, Y. T. Chen, C. H. Lee, Y. F. Chen* | American Chemical Society [ACS]
Journal: ACS Applied & Material Interfaces [IF-8.3] Pages: 26213-26221 , Volumes: 12 ,
Electron-Electron Interactions in 2D Semiconductor InSe.
2020
A. S. Kumar, K. Premasiri, M. Gao, R. K. Ulaganathan, R. Sankar, F. C. Chou, X. P. A. Gao* | American Physical Society [APS]
Journal: Physical Review B [IF-3.2] Pages: 121301(R) , Volumes: 102 ,
Hybrid InSe Nanosheets and MoS2 Quantum Dots for High-Performance Broadband Photodetectors and Photovoltaic Cells.
2019
R. K. Ulaganathan, K. Yadav, R. Sankar, F. C. Chou, Y. T. Chen* | Wiley
Journal: Advanced Material Interfaces [IF-4.3] Pages: 1801336 , Volumes: 6 ,
Sn-doping Enhanced Ultra-high Mobility In1-xSnxSe Phototransistor.
2019
C. R. P. Inbaraj, V. K. Gudelli, R. J. Mathew, R. K. Ulaganathan, R. Sankar, H. Y. Lin, H. I. Lin, Y. M. Liao, H. Y. Cheng, K. H. Lin, F. C. Chou, Y. T. Chen, C. H. Lee, G. Y. Guo, Y. F. Chen* | American Chemical Society [ACS]
Journal: ACS Applied & Material Interfaces [IF-8.3] Pages: 24269-24278 , Volumes: 11 ,
Light and Matter Interaction in Two-Dimensional Atomically Thin Films.
2018
R. K. Ulaganathan, Y. H. Chang, D. Y. Wang, S. S. Li* | Chemical Society of Japan
Journal: Bulletin of the Chemical Society of Japan Pages: 761-771 , Volumes: 91 ,
Tuning Rashba Spin-Orbit Coupling in Gated Multilayer InSe.
2018
K. Premasiri, S. K. Radha, S. Sucharitakul, R. K. Ulaganathan, R. Sankar, F. C. Chou, Y. T. Chen, X. P. A. Gao* | American Chemical Society [ACS]
Journal: Nano Letters [IF-9.6] Pages: 4403-4408 , Volumes: 7 ,
Enhanced Light Emission from the Ridge of Two-dimensional InSe Flakes.
2018
Y. Li, T. M. Wang, H. Wang, Z. P. Li, Y. W. Chen, D. West, R. Sankar, R. K. Ulaganathan, F. C. Chou, C. Wetzel, C. Y. Xu, S. B. Zhang, S. F. Shi* | American Chemical Society [ACS]
Journal: Nano Letters [IF-9.6] Pages: 5078-5084 , Volumes: 18 ,
Ultra-high Performance Flexible Piezo Potential Gated In1-xSnxSe Phototransistor.
2018
C. R. P. Inbaraj, R. J. Mathew, G. Haider, T. P. Chen, R. K. Ulaganathan, R. Sankar, K. P. Bera, Y. M. Liao, M. Kataria, H. I. Lin, Y. T. Chen, C. H. Lee, Y. F. Chen* | Royal Society of Chemistry [RSC]
Journal: Nanoscale [IF-5.8] Pages: 18642-18650 , Volumes: 10 ,
Ultrasensitive Tunability of the Direct Bandgap of 2D InSe Flakes via Strain Engineering.
2018
Y. Li, T. Wang, M. Wu, T. Cao, Y. W. Chen, R. Sankar, R. K. Ulaganathan, F. C. Chou, C. Wetzel, C. G. Xu, S. G. Louie, S. F. Shi* | Institute of Physics [IOP]
Journal: 2D Materials [IF-4.5] Pages: 021002 , Volumes: 5 ,
Lipid- Modified Graphene-Transistor Biosensor for Monitoring Amyloid-β Aggregation.
2018
C. J. Kuo, H. C. Chiang, C. A. Tseng, C. F. Chang, R. K. Ulaganathan, T. T. Ling, Y. J. Chang, C. C. Chen, Y. R. Chen, Y. T. Chen* | American Chemical Society [ACS]
Journal: ACS Applied & Material Interfaces [IF-8.3] Pages: 12311-12316 , Volumes: 10 ,
One-Step Synthesis of Antioxidative Graphene-Wrapped Copper Nanoparticles on Flexible Substrates for Electronic and Electrocatalytic Applications.
2017
C. A. Tseng, C. C. Chen, R. K. Ulaganathan, C. P. Lee, H. C. Chiang, C. F. Chang, Y. T. Chen* | American Chemical Society [ACS]
Journal: ACS Applied & Material Interfaces [IF-8.3] Pages: 25067-25072 , Volumes: 9 ,
Ambipolar Behaviors of Few-layered InSe Field-Effect Transistors.
2017
C. Y. Lin*, R. K. Ulaganathan, R. Sankar, F. C. Chou | American Institute of Physics [AIP]
Journal: AIP Advances [IF-1.4] Pages: 075314 , Volumes: 7 ,
Targeted and Efficient activation of Channelrhodopsins Expressed in Living Cells via Specifically-bound Upconversion Nanoparticles.
2017
K. Yadav, A. C. Chou, R. K. Ulaganathan, H. D. Gao, H. M. Lee, C. Y. Pan, Y. T. Chen* | Royal Society of Chemistry [RSC]
Journal: Nanoscale [IF-5.8] Pages: 9457-9466 , Volumes: 9 ,
Detection of K+ Efflux from Stimulated Cortical Neurons by an Aptamer-Modified Silicon Nanowire Field-Effect Transistor.
2017
A. Anand, C. R. Liu, A. C. Chou, W. H. Hsu, R. K. Ulaganathan, Y. C. Lin, C. A. Dai, F. G. Tseng, C. Y. Pan, Y. T. Chen* | American Chemical Society [ACS]
Journal: ACS Sensors [IF-8.2] Pages: 69-79 , Volumes: 2 ,
High Photosensitivity and Broad Spectral Response of Multi-layered Germanium Sulfide Transistors.
2016
R. K. Ulaganathan, Y. Y. Lu, C. J. Kuo, S. R. Tamalampudi, R. Sankar, K. M. Boopathi, A. Anand, K. Yadav, R. J. Mathew, C. R. Liu, F. C. Chou, Y. T. Chen* | Royal Society of Chemistry [RSC]
Journal: Nanoscale [IF-5.8] Pages: 2284-2292 , Volumes: 8 ,
Ultra-thin Layered Ternary Single Crystals [Sn(SxSe1-x)2] with Bandgap Engineering for High-performance Phototransistors on Versatile Substrates.
2016
P. Perumal, R. K. Ulaganathan, R. Sankar, Y. M. Liao, T. M. Sun, M. W. Chu, F. C. Chou, Y. T. Chen, M. H. Shih, Y. F. Chen* | Wiley
Journal: Advanced Functional Material [IF-18.5] Pages: 3630-3638 , Volumes: 26 ,
Screening Limited Switching Performance of Multilayer 2D semiconductor FETs: the case for SnS.
2016
S. Sucharitakul, R. K. Ulaganathan, R. Sankar, F. C. Chou, Y. T. Chen, C. Wang, C. He, R. Hef, X. P. A. Gao* | Royal Society of Chemistry [RSC]
Journal: Nanoscale [IF-5.8] Pages: 19050-19057 , Volumes: 8 ,
Intrinsic Electron Mobility Exceeding 103 Cm2/ (V s) in Multilayer InSe FETs.
2015
S. Sucharitakul, N. J. Goble, R. K. Ulaganathan, R. Sankar, Z. A. Bogorad, F. C. Chou, Y. T. Chen, X. P. A. Gao* | American Chemical Society [ACS]
Journal: Nano Letters [IF-9.6] Pages: 3815-3819 , Volumes: 15 ,
Three-Dimensional Heterostructures of MoS2 Nanosheets on Conducting MoO2 as an Efficient Electrocatalyst to Enhance Hydrogen Evolution Reaction.
2015
R. D. Nikam, A. Y. Lu, P. A. Sonawane, R. K. Ulaganathan, K. Yadav, L. J. Li, Y. T. Chen* | American Chemical Society [ACS]
Journal: ACS Applied & Material Interfaces [IF-8.3] Pages: 23328-23335 , Volumes: 7 ,
High Performance and Bendable Few-Layered InSe Photodetectors with Broad Spectral Response.
2014
S. R. Tamalampudi, Y. Y. Lu, R. K. Ulaganathan, R. Sankar, C. D. Liao, K. M. Boopathi, C. H. Cheng, F. C. Chou, Y. T. Chen* | American Chemical Society [ACS]
Journal: Nano Letter [IF-9.6] Pages: 2800-2806 , Volumes: 14 ,
DNA Combing on Low-pressure Oxygen Plasma Modified polysilsesquioxane Substrates for Single-molecule Studies.
2014
K. K. Sriram, C. L. Chang, R. K. Ulaganathan, C. F. Chou* | American Institute of Physics [AIP]
Journal: Biomicrofluidics [IF-2.6] Pages: 052102 , Volumes: 8 ,
Advances in Nanowire Transistors for Biological Analysis and Cellular Investigation.
2014
B. R. Li, C. C. Chen, R. K. Ulaganathan, Y. T. Chen* | Royal Society of Chemistry [RSC]
Journal: Analyst [IF-3.6] Pages: 1589-1608 , Volumes: 139 ,
Honors And Awards
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