Browsing PhD Dissertations - DO NOT EDIT by Author "Zhou, Weidong"
Now showing items 1-12 of 12
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LABEL FREE OPTICAL DETECTION OF ELECTRICAL ACTIVITY IN MAMMALIAN NEURONS
Satpathy, Sarmishtha; 0000-0003-2171-2675 (2018-02-15)We describe an optical technique for label-free detection of the action potential in cultured mammalian neurons. Induced morphological changes due to action potential propagation in neurons are optically interrogated with ... -
LABEL-FREE REFRACTIVE INDEX SENSING WITH FREE-SPACE COUPLED PHOTONIC CRYSTAL SLABS
Liu, Yonghao (2017-12-07)Label-free optical resonance sensors can detect small changes of refractive index (RI), which could be used for biochemical molecular detection, drug screening or gas detection. One of the most critical parameters in these ... -
Light Trapping And Absorption Enhancement For High Performance Solar Cells And Infrared Photodetectors
Chen, Li (Electrical Engineering, 2010-07-19)This dissertation presents the work on light trapping and absorption enhancement in solar cells and infrared photodetectors. Hemispherical microstructure based omni-directional anti reflection (Omni-AR) coating has been ... -
Multi-directional Light Coupling Structures For Nanomembrane Photonic Integration
Saha, Tapas Kumar (Electrical Engineering, 2012-07-25)Vertical coupling of light within an in-plane nanophotonic waveguide is an essential step towards the successful future realization of CMOS compatible optical interconnects and photonic integrated circuits. This is especially ... -
Nanomembrane Surface Emitting Light Sources
Chuwongin, Santhad (Electrical Engineering, 2014-03-10)Crystalline semiconductor nanomembranes (NM), which are transferable, stackable, bondable and manufacturable, offer unprecedented opportunities for unique electronic and photonic devices for vertically stacked high density ... -
On Chip Hybrid Photonic Crystal Surface Emitting Lasers
Liu, Shih-Chia (2017-12-06)We report here the design and experimental demonstration of optically pumped photonic crystal bandedge membrane lasers on silicon-on-insulator (SOI) and on bulk silicon (Si) substrates, based on heterogeneously integrated ... -
Photonic Crystal Cavities For Spectrally-selective Optoelectronic Devices
Yang, Hongjun (Electrical Engineering, 2011-07-14)Photonic crystal (PC) structures exhibit unconventional dispersion and refractive properties making possible hitherto not realizable optical and optoelectronic devices with high spectral selectivity. Functional PC devices ... -
Photonic Crystal Surface Emitting Lasers
Kalapala, Akhil Raj Kumar; 0000-0003-4014-938X (2022-05-16)Since the initial proposal in 1999 by Noda et al., photonic crystal surface emitting lasers (PCSELs) have proven to achieve large area, coherent lasing with a narrow, single mode beam. Owing to their unique orthogonal ... -
TOWARDS ON-CHIP INTEGRATED SENSORS: PHOTONIC CRYSTAL OPTICAL SENSORS AND LASERS
Liu, Zhonghe; 0000-0002-9629-110X (2022-08-11)Supervising Professor: Weidong Zhou The field of compact integrated optical platform has developed into a new era in the past two decades. On one hand, the semiconductor optoelectronic devices are becoming smaller and ... -
Towards Perfect Light Coupling And Absorption In Nanomembranes With Omni-directional Anti-refelction And Photonic Crystal Structures
Chadha, Arvinder (Electrical Engineering, 2014-07-14)Silicon photonics is realized as a promising platform to meet the requirements of higher bandwidth and low cost high density monolithic integration. More recent demonstrations of a variety of stretchable, foldable and ... -
TRANSFER PRINTED SEMICONDUCTOR NANOMEMBRANES FOR HETEROGENEOUSLY INTEGRATED MULTI-BAND IMAGER ARRAYS
Menon, Laxmy (2016-05-13)The electronics industry is ruled by silicon which is realized as the solution to meet the requirements of higher bandwidth and low cost high density monolithic integration. However, silicon has its limitations when it ... -
Transfer-printed Photonic Crystal Nanomembrane Fano Resonance Filters And Modulators
Shuai, Yi-Chen (Electrical Engineering, 2014-03-12)This dissertation presents the research work on photonic crystal nanomembrane Fano resonance devices based on transfer printing techniques. Ultra-compact high quality (Q) factor optical filters have been design, fabricated, ...