Email : ashish.chowdhary[at]ece.iitr.ac.in
Phone: 01332-285240
Room No. : S 310/3
My Google Scholar
My Website
His research interests are focused mainly on the emerging areas of Nanophotonics, Metamaterials, Terahertz Sensing, Terahertz Communication, and AI/ML Techniques for the above verticals. He specializes in developing theory, modeling, and simulation of smart tunable optical devices. He is also exploring the exciting field of hybrid electronic-photonic integrated circuits for 6G THz communication devices.
Active Research Projects:
1. Smart Optical Devices for Energy Harvesting
2. Terahertz Filters for Remote Sensing
3. Metamaterial-based Passive Radiative Coolers
4. Graphene-based Tunable Meta-devices
5. Terahertz Absorbers for Imaging Applications
6. Electronics Photonics Integrated Circuits
National and international media highlights of his research:
For detailed information, kindly visit his website: https://akcnitdgp.wixsite.com/dr-ashish-chowdhary
Open Positions: Looking for talented and self-motivated B.Tech, M.Tech, and PhD students with a strong academic background to join his group. If you are interested, you may choose among any active research areas (listed above) and drop me an email at ashish.chowdhary[at].ece.iitr.ac.in with your CV, Transcript, and Research Statement.
Current PhD Students:
1. Ranjit Kumar Vishwakarma (Research topic yet to be decided)
2. Mohit Kumar (Co-Supervisor with Prof. Darshak Bhatt)
Current M.Tech Students:
1. Kush Kumar (Got an internship at Texas Instruments)
Current B.Tech Final Year Students:
1. Ayush Arya (Placed in Oracle)
2. Amandeep Singh (Placed in Google)
3. Preeti (Placed at Schlumberger)
| From | To | Designation | Organisation |
|---|---|---|---|
| 2023 | Present | Assistant Professor | Indian Institute of Technology Roorkee |
| 2022 | 2023 | Post-Doctoral Fellow | Nanyang Technological University Singapore |
| 2015 | 2017 | Solution Integration Engineer | Ericsson India Global Services Pvt. Ltd. |
| Degree | Subject | University | Year Studied |
|---|---|---|---|
| PhD | Nanophotonics and Metamaterials | Indian Institute of Technology Guwahati | 2022 |
| MS (Engineering) | Microelectronics, Photonics, and RF | Indian Institute of Technology Guwahati | 2020 |
| B. Tech. | Electronics and Communication Engineering | National Institute of Technology Durgapur | 2015 |
| Award | Institute | Year Awarded |
|---|---|---|
| PM Early Career Research Grant | Anusandhan National Research Foundation | 2025 |
| Awarded Trusted Reviewer Badge | Institute of Physics (IOP) UK | 2025 |
| Post-Doctoral Research Fellowship | NTU Singapore | 2023 |
| Best PhD Thesis Award Medal | Indian Institute of Technology Guwahati | 2022 |
| AWSAR Award 2021 | Department of Science and Technology (DST), Govt. of India | 2022 |
| Best Poster Award in CLEO 2021 Conference | American Physical Society (APS) | 2022 |
| Incubic Milton Chang Travel Grant | CLEO Conference, San Jose, USA | 2021 |
| Student Delegates Grant | Metamaterials Conference, New York City, USA | 2021 |
| From | To | Designation | Organisation | Level |
|---|---|---|---|---|
| August 2023 | July 2024 | B.Tech Final Year Project | Indian Institute of Technology Roorkee | Coordinator |
| August 2023 | July 2024 | Departmental Academic Programme Committee (DAPC) | Indian Institute of Technology Roorkee | Member |
| August 2023 | July 2024 | Wilson Innovation Laboratory | Indian Institute of Technology Roorkee | In-charge |
| August 2023 | July 2024 | B.Tech 1st Year, ECE | Indian Institute of Technology Roorkee | Faculty Advisor |
| Title | Course Code | Course | Semester |
|---|---|---|---|
| Terahertz Sensing and Imaging | ECL-508 | M. Tech | Terahertz Communication and Sensing | Spring 2025 |
| Industry-Oriented Terahertz Lab | ECN-564 | M. Tech | Terahertz Communication and Sensing | Spring 2025 |
| Terahertz Electronics | ECN-503 | M. Tech | Terahertz Communication and Sensing | Autumn 2024 |
| Training Seminar | ECN-499 | B. Tech | 4th Year ECE | Autumn 2024 |
| Fundamentals of Electronics | ECE-101 | B. Tech | 1st Year | Autumn 2023 |
| Microwave lab | ECN-530 | M. Tech | RF and Microwave | Autumn 2023 |
| High Frequency Measurements and Instrumentation | ECN-504 | M.Tech | Terahertz Communication and Sensing | Spring 2024 |
| Terahertz Laboratory | ECN-502 | M.Tech | Terahertz Communication and Sensing | Spring 2024 |
(December 2020 – Present)
1. A. K. Chowdhary and D. Sikdar, Design of Electrotunable All-weather Smart Windows, Solar Energy Materials and Solar Cells, 222, 110921, 2021. [Link] 2020 IF: 7.3 (Q1) (Covered by International News Media)
2. A. K. Chowdhary, T. Bhowmik, and D. Sikdar, Infrared-blocking Plasmonic Meta-glasses for Energy-saving Passive Windows, Optics Letters, 47, 2242–2245, 2022. [Link] 2020 IF: 3.8 (Q1) (Featured in Spotlight on Optics)
3. A. K. Chowdhary, V. A. Reddy, and D. Sikdar, Selective Thermal Emitters for High-performance All-day Radiative Cooling, Journal of Physics D: Applied Physics, 55 (8), 085504, 2022. [Link] 2020 IF: 3.2 (Q1) (Covered by International News Media)
4. A. K. Chowdhary, V. A. Reddy, and D. Sikdar, Nanophotonics-enabled High-efficiency Selective Solar Absorbers for Waste Heat Management, IEEE Transactions on Nanotechnology, 21, 131–136, 2022. [Link] 2020 IF: 2.6 (Q2)
5. A. K. Chowdhary and D. Sikdar, Low-power Design of Electrotunable Color Filters and Optical Switches, Journal of the Optical Society of America B, 37, 3865–3873 (2020). [Link] 2020 IF: 2.1 (Q1)
6. A. K. Chowdhary, T. Bhowmik, and D. Sikdar, Polarization- and Angle-insensitive Ultra-broadband Perfect Metamaterial Absorber for Thermophotovoltaics, Journal of the Optical Society of America B, 38 (2), 327–335, 2021. [Link] 2020 IF: 2.1 (Q1) (Featured in Top-Downloaded Articles on Metamaterials Among the OSA Journals)
7. A. K. Chowdhary, T. Bhowmik, J. Gupta, and D. Sikdar, Energy-saving All-weather Window Based on Selective Filtering of Solar Spectral Radiation, Applied Optics, 60 (5), 1315–1325, 2021. [Link] 2020 IF: 2.0 (Q1)
8. A. K. Chowdhary, and D. Sikdar, Multilayer thin-film based nanophotonic windows: static versus electrotunable design, Journal of Optics, 24, 024002, 2022. [Link] 2020 IF: 2.5 (Q1)
9. T. Bhowmik, A. K. Chowdhary, and D. Sikdar, Grating-assisted Polarization-insensitive Dual-Mode Spatial Light Modulators using an Epsilon-Near-Zero Material, IEEE Journal of Quantum Electronics, 58 (4), 1–8, 2022. [Link] 2020 IF: 2.3 (Q1)
10. KM Dhriti, A. K. Chowdhary, B. S. Chouhan, D. Sikdar, and G. Kumar, Tunable Terahertz Absorption Modulation in Graphene Nanoribbon-assisted Dielectric Metamaterial, Journal of Physics D: Applied Physics, 55 (28), 285101, 2022. [Link] 2020 IF: 3.2 (Q1)
11. T. Bhowmik, A. K. Chowdhary, and D. Sikdar, Polarization- and Angle-insensitive Tunable Metasurface for Electro-Optic Modulation,IEEE Photonics Technology Letters, 2023. [Link] 2021 IF: 2.4 (Q1)
(December 2019 – Present)
1. A. K. Chowdhary and D. Sikdar, Nanophotonic All-weather Windows for Energy-efficient Smart Buildings, 2021 Conference on Lasers and Electro-Optics (CLEO), 1–2 (2021). Location: San Jose, California, USA. [Link] (Awarded with the prestigious Incubic Milton Chang Travel Grant and the best poster award)
2. A. K. Chowdhary, A. Kumar, and D. Sikdar, Cross–Ring Based Broadband Plasmonic Metamaterial Absorbers for Boosting Silicon Solar Cell Efficiency, 15th International Congress on Artificial Materials for Novel Wave Phenomena – Metamaterials 2021, 102–104 (2021). Location: New York, USA. [Link] (Awarded with the prestigious student delegate Travel Grant)
3. A. K. Chowdhary and D. Sikdar, Ultra-broadband Wide-Angle Metallo-Dielectric Metamaterial Absorber for Solar Energy Harvesting, in 2019 Workshop on Recent Advances in Photonics (WRAP), 1–3 (2019). Location: Guwahati, India. [Link]
4. T. Bhowmik, A. Kumar, A. K. Chowdhary, and D. Sikdar, Polarization-insensitive Electro-tunable Broadband Plasmonic Metamaterial Absorber for Amplitude Modulation, 2021 Fifteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials), 050–052 (2021). Location: New York City, USA. [Link]
5. T. Bhowmik, A. K. Chowdhary, A. Kumar, and D. Sikdar, Guided-Mode Resonance based All-dielectric Optical Intensity Modulator, 2021 IEEE Photonics Conference (IPC), 1-2 (2021). Location: Vancouver, BC, Canada. [Link]
6. A. K Chowdhary, V. A. Reddy, T. Bhowmik, and D. Sikdar, Spectrally Selective Nanophotonic Windows for Aiding Photosynthesis in Greenhouses, 2021 IEEE Photonics Conference (IPC), 1–2 (2021). Location: Vancouver, BC, Canada. [Link]
7. T. Bhowmik, A. K. Chowdhary, J. Gupta, and D. Sikdar, Coupling-assisted Epsilon-Near-Zero Material based Energy-efficient Electro-Absorption Modulator, in 2022 Workshop on Recent Advances in Photonics (WRAP), 1–2 (2022). Location: Mumbai, India. [Link]
8. B. S. Chouhan, KM Dhriti, A. K. Chowdhary, D. Sikdar, and G. Kumar, Modulating broadband terahertz in a Graphene assisted dielectric Metamaterial, in 2022 Workshop on Recent Advances in Photonics (WRAP), 1– 2 (2022). Location: Mumbai, India. [Link]
9. A. K. Chowdhary, V. A. Reddy, T. Bhowmik, and D. Sikdar, Vanadium Dioxide Assisted Thermo-optic Metamaterial Absorbers for Optical Switching, in 2022 Workshop on Recent Advances in Photonics (WRAP), 1–2 (2022). Location: Mumbai, India. [Link]
10. A. K. Chowdhary, T. Bhowmik, J. Gupta, and D. Sikdar, Ultraviolet and Infrared Blocking Meta-glasses for Smart Electric Vehicles, 22nd International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD), 2022. Location: Italy. [Link]
11. T. Bhowmik, A. K. Chowdhary, and D. Sikdar, Energy-efficient Polarization-insensitive Electro-tunable Metasurface for Optical Intensity Modulation, International Conference on Optical MEMS and Nanophotonics (OMN), 2022. Location: Israel. [Status: Presented on Sep-2022]
12. J. Gupta, P. Das, A. K. Chowdhary, R. Bhattacharjee, and D. Sikdar, Thin-Wire Array based Resonator for Targeted Clinical 1.5T Magnetic Resonance Imaging, 2022 IEEE Photonics Conference (IPC), 1–2 (2022). Location: Vancouver, BC, Canada. [Link]
13. T. Bhowmik, J. Gupta, B. Chakraborty, A. K. Chowdhary, D. Sikdar, Tunable Metasurface based Polarization-insensitive Electro-Optic Amplitude Modulator for Nanophotonic Systems, 2023 IEEE Guwahati Subsection Conference (GCON), 1-5 (2023). Location: Guwahati, India [Link]
(July 2022 – Present)
1. A. K. Chowdhary and D. Sikdar, A Passive Radiative Cooler System, App. No: 202231043104 (filed on July 27, 2022)
2. T. Bhowmik, A. K. Chowdhary, and D. Sikdar, Frequency-scalable Polarization-insensitive Dual-mode Electro-Optic modulators, App. No: 202231066529 (filed on November 19, 2022)