EAPSI: Optical Characterization of Atomically-Thin Two-Dimensional Materials as Nanoscale Light Emitters

发光元件广泛应用于现代技术、工艺和应用，如计算、传感、生物医学应用和电信。由于光与物质之间固有的弱相互作用，有源发光器件存在一个基本限制。这自然会导致效率低下和体积庞大的光子器件，与电子器件相比，器件速度慢，需要更高的功耗，并导致不经济的组件和系统成本。该奖项支持研究原子薄材料和等离子体金属的混合材料，作为纳米级和快速光放大发射器的潜在候选材料。该技术可以实现更快的计算速度，同时降低当前技术所产生的功耗，从而为社会带来巨大的利益。这项研究将与新加坡南洋理工大学（NTU）破坏性光子技术中心（CDPT）纳米技术和光谱学领域的杰出科学家Cesare Soci博士合作进行。该奖项的目的是探索过渡金属二硫化物（特别是二硫化钼）材料，并展示深亚波长尺度等离子体增强发光装置。这项工作将利用乔治华盛顿大学的洁净室和成像中心来实现纳米级光学天线的制造。接下来，将通过微光致发光测量和CDPT时间分辨测量来表征二维材料的等离子体增强发射性能。此外，还将利用光谱分析仪对宽带光源激发下的谐振腔进行分析。该奖项由美国国家科学基金会和新加坡国家研究基金会共同资助，隶属于东亚和太平洋暑期研究所项目，支持美国研究生进行暑期研究。

Light emitting components are used widely in modern technologies, processes and applications such as computing, sensing, bio-medical applications, and telecommunication. A fundamental limitation for active light emitting devices exists due to the inherently weak interaction between light with matter. This naturally leads to inefficient and bulky photonic device that are significantly larger compared to electronic counterparts, slow device speeds, require higher power consumption, and result in uneconomical component and system cost. This award supports research to study a hybrid of atomically thin materials and plasmonic metals as a potential candidate for nanoscale and fast light amplification emitter. This technology can have great benefit to society by enabling faster computing while reducing the power consumption incurred by current technologies. This research will be conducted in collaboration with Dr. Cesare Soci, an eminent scientist in the field of nanotechnology and optical spectroscopy at the Center of Disruptive Photonic Technologies (CDPT) at Nanyang Technological University (NTU) in Singapore. It is the aim of this award to explore transition metal dichalcogenides (in particular, molybdenum disulfide) materials and demonstrate deep-sub wavelength scale plasmonic enhanced light emitting devices. This work will utilize cleanroom and imaging center at George Washington University to achieve fabrication of nanoscale optical antennas. Next, the plasmonic enhanced emission performance of the 2D material will be characterized by mirco photoluminescence measurements, and time resolved measurement at CDPT. Also the optical spectrum analyzer will be used to find the resonances of fabricated cavities excited by the broadband source. This award under the East Asia and Pacific Summer Institutes program supports summer research by a U.S. graduate student and is jointly funded by NSF and the National Research Foundation of Singapore.