Bamadev Das
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View article: Opto-Electronic Simulation of Silicon Waveguide Integrated Single Photon Avalanche Diodes
Opto-Electronic Simulation of Silicon Waveguide Integrated Single Photon Avalanche Diodes Open
View article: Opto-Electronic Simulation of Silicon Waveguide Integrated Single Photon Avalanche Diodes
Opto-Electronic Simulation of Silicon Waveguide Integrated Single Photon Avalanche Diodes Open
Single-photon avalanche diodes (SPADs) integrated into photonic integrated circuits (PICs) can offer a promising alternative to cryogenic superconducting detectors, combining CMOS compatibility with room-temperature operation. However, thi…
View article: Enhanced spontaneous emission in proximity of a plasmonic nano-slit antenna
Enhanced spontaneous emission in proximity of a plasmonic nano-slit antenna Open
We investigate enhancement in the spontaneous emission (SE) rate of CdSe/ZnS core–shell quantum dots (QDs) by a semi-infinite plasmonic nano-slit antenna. Long Al2O3 filled nano-slits having ∼15 nm width, ∼250 nm height, and >50 μm leng…
View article: Active Surface-Enhanced Raman Scattering Platform Based on a 2D Material–Flexible Nanotip Array
Active Surface-Enhanced Raman Scattering Platform Based on a 2D Material–Flexible Nanotip Array Open
Two-dimensional materials with a nanostructure have been introduced as promising candidates for SERS platforms for sensing application. However, the dynamic control and tuning of SERS remains a long-standing problem. Here, we demonstrated …
View article: Active SERS Platform Based on 2D Materials-Flexible Nanotip Array
Active SERS Platform Based on 2D Materials-Flexible Nanotip Array Open
Two-dimensional materials with nanostructure have been introduced as promising candidates for SERS platform for sensing application. However, dynamic control and tuning SERS remains a long-standing problem. Here, we demonstrated active tun…
View article: Lithographically Defined Zerogap Strain Sensors
Lithographically Defined Zerogap Strain Sensors Open
Metal thin films on soft polymers provide a unique opportunity\nfor resistance-based strain sensors. A mechanical mismatch between\nthe conductive film and the flexible substrate causes cracks to open\nand close, changing the electrical re…
View article: Plasmon-Enhanced Raman Scattering of WSe<sub>2</sub> Monolayer and Brilliant Cresyl Blue Molecules via One-Dimensional Nanogap with Finite-Difference Time-Domain
Plasmon-Enhanced Raman Scattering of WSe<sub>2</sub> Monolayer and Brilliant Cresyl Blue Molecules via One-Dimensional Nanogap with Finite-Difference Time-Domain Open
Plasmon-enhanced Raman scattering is crucial for investigating a variety of materials, including chemical and biological molecules.A localized surface plasmon resonance (LSPR) must be designed to strengthen the optical field surrounding th…
View article: Defining the zerogap: cracking along the photolithographically defined Au–Cu–Au lines with sub-nanometer precision
Defining the zerogap: cracking along the photolithographically defined Au–Cu–Au lines with sub-nanometer precision Open
Cracks are formed along the photolithographically pre-determined lines with extremely high yield and repeatability, when Cu clusters are introduced between planarized Au thin films sequentially deposited on a PET substrate. These clusters …
View article: Near-maximum microwave absorption in a thin metal film at the pseudo-free-standing limit
Near-maximum microwave absorption in a thin metal film at the pseudo-free-standing limit Open
View article: Topology-Changing Broadband Metamaterials Enabled by Closable Nanotrenches
Topology-Changing Broadband Metamaterials Enabled by Closable Nanotrenches Open
One of the most straightforward methods to actively control optical functionalities of metamaterials is to apply mechanical strain deforming the geometries. These deformations, however, leave symmetries and topologies largely intact, limit…
View article: Efficient Control of THz Transmission of PEDOT:PSS with Resonant Nano-Metamaterials
Efficient Control of THz Transmission of PEDOT:PSS with Resonant Nano-Metamaterials Open
Nano-metamaterials designed to operate at a certain resonance frequency enhance the magnitude of terahertz (THz) wave transmission by three orders of magnitude or even more. In this pursuit, controlling magnitude of resonant transmission a…