Scholarly OutputJournal Papers & Conference Talks

PublicationsPeer-reviewed archives. Physical discoveries.

Our archival research spanning 2D excitonic materials, CMOS-integrated optoelectronics, polarization-resolved spectroscopy, and cryogenic quantum instrumentation.

35 Total Works

26 Refereed Journals

8 Selected Works

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Showing 35 of 35 publications

2026journal2D devices, contacts & dielectrics

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2025journal2D devices, contacts & dielectrics

Approaching Phonon-Limited Transport in Two-Dimensional Electronics by Oxygen-Free Fabrication

S. Mukherjee, S. Wang, D. Venkatakrishnarao, Y. Tarn, T. Talha-Dean, R. Lee, I. Verzhbitskiy, D. Huang, A. Mishra, J. W. John, S. Das, et al.

ACS Nano · Vol. 19(9) (9327–9339)

DOI

2025journal2D devices, contacts & dielectrics

Low-Temperature Contacts and the Coulomb Blockade Effect in Layered Nanoribbons with In-Plane Anisotropy

I. Verzhbitskiy, A. Mishra, S. Mitra, Z. Zhang, S. Das, et al.

ACS Nano · Vol. 19(11) (10878–10888)

DOI

2025journal2D devices, contacts & dielectrics

Hopping conduction in quasi-1D titanium trisulfide layered nanoribbons

A. Mishra, I. Verzhbitskiy, R. Lee, A. Rodin, Z. Zhang, S. Das, et al.

Applied Physics Letters · Vol. 127 (11)

DOI

2025conferenceExcitons, trions & valley physicsOral presentation

Coherent coupling between neutral and charged exciton

S. Das, K. E. J. Goh

Bulletin of the American Physical Society (APS March Meeting)

2025conferenceExcitons, trions & valley physicsOral presentation

Quantum Engineering of Valley States in Monolayer WS₂ Using External Bias

S. Das

International Conference on Materials for Advanced Technologies (ICMAT)

2024journalHeterostructures & materials integration

Nano-Ironing van der Waals Heterostructures toward Electrically Controlled Quantum Dots

T. Talha-Dean, Y. Tarn, S. Mukherjee, J. W. John, D. Huang, I. Verzhbitskiy, D. Venkatakrishnarao, S. Das, et al.

ACS Applied Materials & Interfaces · Vol. 16(24) (31738–31746)

DOI

2024journal2D devices, contacts & dielectrics

Liquid Metal Oxide Assisted Integration of High-K Dielectrics and Metal Contacts for Two-Dimensional Electronics

D. Venkatakrishnarao, A. Mishra, Y. Tarn, M. Bosman, R. Lee, S. Das, et al.

ACS Nano · Vol. 18(39) (26911–26919)

DOI

2024conferenceExcitons, trions & valley physicsOral presentation

Valleytronics with Charged Excitons: Electrical Control and Polarization Switching

S. Das, H. Ding, I. Verzhbitskiy, C. S. Lau, K. E. J. Goh

Institute of Physics Singapore (IPS) Meeting

2024journalExcitons, trions & valley physicsSelectedCorresponding author

Electrical Control of Valley Polarized Charged Exciton Species in Monolayer WS₂

S. Das, D. Huang, I. Verzhbitskiy, et al.

ACS Nano · Vol. 18(44) (30805–30815)

DOI

2023journalHeterostructures & materials integration

Liquid-Metal-Printed Ultrathin Oxides for Atomically Smooth 2D Material Heterostructures

Y. Zhang, D. Venkatakrishnarao, M. Bosman, W. Fu, S. Das, et al.

ACS Nano · Vol. 17(8) (7929–7939)

DOI

2023conference2D devices, contacts & dielectrics

Investigating the Compatibility of MoO₃ as Alternative Dielectric: A Spectroscopic Approach

S. Das, I. Verzhbitskiy, H. Ding, Z.-E. Ooi, F. Bussolotti, C. S. Lau, K. E. J. Goh

International Conference on Materials for Advanced Technologies (ICMAT)

2023conferenceExcitons, trions & valley physicsOral presentation

Electrical control over valley polarization for charge excitonic species

S. Das, H. Ding, I. Verzhbitskiy, K. Watanabe, T. Taniguchi, C. S. Lau, K. E. J. Goh

Recent Progress in Graphene and 2D Materials Research (RPGR)

2023bookExcitons, trions & valley physicsBook chapter

Valley Addressability and Controllability

F. Bussolotti, S. Das, W. Tong, K. E. J. Goh

Valleytronics in 2D Materials, World Scientific Publishing Company

DOI

2023journalHeterostructures & materials integrationSelected

Harmonic to anharmonic tuning of moiré potential leading to unconventional Stark effect and giant dipolar repulsion in WS₂/WSe₂ heterobilayer

S. Chatterjee, M. Dandu, P. Dasika, R. Biswas, S. Das, et al.

Nature Communications · Vol. 14 (4032)

DOI

2023journal2D devices, contacts & dielectricsSelectedReview article

Dielectrics for Two-Dimensional Transition Metal Dichalcogenide Applications

C. S. Lau, S. Das, I. Verzhbitskiy, D. Huang, et al.

ACS Nano · Vol. 17(11) (9870–9905)

DOI

2022conferenceOptical & ultrafast spectroscopyOral presentation

Nonlinear, ultra-fast photocurrent generation using charged biexciton

S. Das, S. Chatterjee, G. Gupta, K. Majumdar

APS March Meeting

2022journalExcitons, trions & valley physics

Probing biexciton in monolayer WS₂ through controlled many-body interaction

S. Chatterjee, S. Das, G. Gupta, K. Watanabe, T. Taniguchi, K. Majumdar

2D Materials · Vol. 9 (015023)

DOI

2022journalExcitons, trions & valley physics

Trion-trion annihilation in monolayer WS₂

S. Chatterjee, G. Gupta, S. Das, K. Watanabe, T. Taniguchi, K. Majumdar

Physical Review B (Letters) · Vol. 105 (L121409)

DOI

2022journalOptical & ultrafast spectroscopySelectedJoint first author

Highly nonlinear biexcitonic photocurrent from ultrafast inter-layer charge transfer

S. Das, G. Gupta, S. Chatterjee, K. Watanabe, T. Taniguchi, K. Majumdar

ACS Nano · Vol. 16 (9728)

DOI

2021journal2D devices, contacts & dielectrics

Thermal transport across wrinkles in few-layer graphene stacks

A. Mohapatra, S. Das, K. Majumdar, M. S. R. Rao, M. Jaiswal

Nanoscale Advances · Vol. 3 (2252–2259)

DOI

2021journalHeterostructures & materials integration

Two-dimensional ReS₂: solution to the unresolved queries on its structure and inter-layer coupling leading to potential optical applications

J. R. Gadde, A. Karmakar, T. K. Maji, S. Mukherjee, R. Alexander, A. M. R. Sharma, S. Das, A. Mandal, K. Dasgupta, A. Naik, K. Majumdar, R. Hawaldar, K. N. V. D. Adarsh, S. Ray, D. Karmakar

Physical Review Materials · Vol. 5 (054006)

DOI

2021journalOptical & ultrafast spectroscopy

Strong near band-edge excited second-harmonic generation from multilayer 2H tin diselenide

R. Biswas, M. Dandu, A. Prosad, S. Das, S. Menon, J. Deka, K. Majumdar, V. Raghunathan

Scientific Reports · Vol. 11 (15017)

DOI

2021journalOptical & ultrafast spectroscopy

Observation of polarization dependent excitonic luminescence in few-layered WS₂ flakes

R. Roy, S. Das, N. Mazumder, D. Roy, K. K. Chattopadhyay

Chemical Physics Letters · Vol. 785 (139012)

Link

2021conferenceExcitons, trions & valley physicsOral presentation

Excitons in flatland

S. Das, K. Majumdar

EECS Research Students Symposium, IISc

2020journalOptical & ultrafast spectroscopy

Anharmonicity in Raman-active phonon modes in atomically thin MoS₂

S. Sarkar, I. Maity, H. L. Pradeepa, G. Nayak, L. Marty, J. Renard, J. Coraux, N. Bendiab, V. Bouchiat, S. Das, K. Majumdar, M. Jain, A. Bid

Physical Review B · Vol. 101 (205302)

DOI

2020journalHeterostructures & materials integration

Combinatorial large-area MoS₂/anatase-TiO₂ interface: a pathway to emergent optical and opto-electronic functionalities

T. Maji, A. Rajlakshmi, S. Mukherjee, R. Alexander, A. Mondal, S. Das, R. Sharma, N. Chakraborty, K. Dasgupta, M. Anjanashree, R. Hawaldar, M. Pandey, A. Naik, K. Majumdar, S. Pal, K. N. V. D. Adarsh, S. K. Ray, D. Karmakar

ACS Applied Materials & Interfaces · Vol. 12 (44345)

DOI

2020journalExcitons, trions & valley physicsSelected

Gate-tunable trion switch for excitonic device applications

S. Das, S. Kallatt, N. Abraham, K. Majumdar

Physical Review B (Rapid Communication) · Vol. 101 (081413(R))

DOI

2020journalExcitons, trions & valley physicsSelected

Highly tunable layered exciton in bilayer WS₂: linear quantum confined Stark effect versus electrostatic doping

S. Das, M. Dandu, G. Gupta, K. Murali, N. Abraham, S. Kallatt, K. Watanabe, T. Taniguchi, K. Majumdar

ACS Photonics · Vol. 7 (3386–3393)

DOI

2019conferenceExcitons, trions & valley physicsJoint first author

Layer distribution of excitons in few-layer TMDC

S. Das, G. Gupta, K. Majumdar

Graphene Conference, Rome

2019journalOptical & ultrafast spectroscopy

Strong single- and two-photon luminescence enhancement by non-radiative energy transfer across layered heterostructure

M. Dandu, R. Biswas, S. Das, S. Kallatt, S. Chatterjee, M. Mahajan, V. Raghunathan, K. Majumdar

ACS Nano · Vol. 13 (4795)

DOI

2019journal2D devices, contacts & dielectrics

Highly sensitive, fast graphene photodetector with responsivity >10⁶ A/W using floating quantum well gate

K. Murali, N. Abraham, S. Das, S. Kallatt, K. Majumdar

ACS Applied Materials & Interfaces · Vol. 11 (30010)

DOI

2019journalHeterostructures & materials integrationSelectedJoint first author

Inter-layer charge transport controlled by exciton-trion coherent coupling

S. Kallatt, S. Das, S. Chatterjee, K. Majumdar

npj 2D Materials and Applications · Vol. 3 (15)

DOI

2019journalExcitons, trions & valley physicsSelectedJoint first author

Layer degree of freedom for excitons in transition metal dichalcogenides

S. Das, G. Gupta, K. Majumdar

Physical Review B · Vol. 99 (165411)

DOI

2018journal2D devices, contacts & dielectricsK. Murali and M. Dandu contributed equally

Gate tunable WSe₂/SnSe₂ backward diode with ultra-high reverse rectification ratio

K. Murali, M. Dandu, S. Das, K. Majumdar

ACS Applied Materials & Interfaces · Vol. 10 (5657)

DOI