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Optical Nanoengineering Laboratory

UC Berkeley Mechanical Engineering

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Low-Dimensional Materials

Low-dimensional materials, such as transition metal dichalcogenides exhibit extraordinary mechanical, optical and electronic properties. These are for example, a high Young’s modulus, an electrically tunable refractive index or strong photoluminescence emission, making these materials highly suitable for next generation displays, photodetectors and light sources. However, there are still numerous open questions with respect to the large scale manufacturing and the efficient coupling of light to these atomically thin layers. Our research focuses on developing scalable manufacturing processes for these materials and investigating methods for improved light coupling for realizing light-harvesting and optoelectronic devices.

Relevant references: 

Li, M., Hail, C.U., Biswas, S. and Atwater, H.A., 2023. Excitonic beam steering in an active van der Waals metasurface. Nano Letters, 23(7), pp.2771-2777.

Li, M., Biswas, S., Hail, C.U. and Atwater, H.A., 2021. Refractive index modulation in monolayer molybdenum diselenide. Nano Letters, 21(18), pp.7602-7608.

Seah, S.K., Biswas, S., Hail, C.U., Jang, M.S. and Atwater, H.A., 2025. Efficient, Polarization-Diverse State Generation with Tunable Black Phosphorus Cavity Heterostructures and Active Metasurfaces. ACS Photonics.

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