Research work at Dr. Anuj Dhawan’s laboratory at IIT Delhi is primarily based on the design and development of nanophotonic and plasmonic devices. Dr. Dhawan’s research group has primarily focused on the design and modeling of plasmonic chemical and biological sensors, optical switches, and photonic waveguides and interconnects. In this paper, firstly research work carried out in Dr. Dhawan’s laboratory on sensor devices based on surface plasmon resonance, localized surface plasmon resonance, and surface-enhanced Raman scattering, is described. Subsequently, the research work being carried out in Dr. Dhawan’s laboratory on fabrication of plasmonic nanostructures and their characterization, is discussed. Finally, EM modeling of optical switching devices—consisting of a plasmonic nanostructure system consisting of an array of gold nanowires separated from an underlying gold film by a vanadium dioxide thin film spacer layer—is discussed.

中文翻译：

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等离子体和纳米光子器件的设计与开发

德里IIT德里Anuj Dhawan博士实验室的研究工作主要基于纳米光子和等离激元器件的设计和开发。Dhawan博士的研究小组主要致力于等离子体化学和生物传感器，光学开关以及光子波导和互连的设计和建模。在本文中，首先描述了在Dhawan博士的实验室中基于表面等离子体激元共振，局部表面等离子体激元共振和表面增强拉曼散射的传感器设备的研究工作。随后，讨论了在Dhawan博士的实验室中进行的有关等离子体纳米结构的制造及其表征的研究工作。最后，