Αποτελέσματα αναζήτησης - Chong Geng
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The Feasibility and Accuracy of Sentinel Lymph Node Biopsy in Initially Clinically Node-Negative Breast Cancer after Neoadjuvant Chemotherapy: A Systematic Review and Meta-Analysis...
Έκδοση 2016-01-01Λήψη πλήρους κειμένου<h4>Background</h4>With the increased use of neoadjuvant chemotherapy (NAC) in breast cancer, the timing of sentinel lymph node biopsy (SLNB) has become increasingly important. In this study, we aimed to evaluate the feasibility and accuracy of SLNB for initially clinically node-negative...
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On the Importance of the Polarity for GaN/InGaN Last Quantum Barriers in III-Nitride-Based Light-Emitting Diodes
Έκδοση 2016-01-01Λήψη πλήρους κειμένουIn this paper, we investigate the electron injection efficiency in terms of different polarities and different polarization charge densities at the <inline-formula><tex-math notation="LaTeX">${\rm{GaN/ InGaN}}$</tex-math> </inline-formula> interface. We find that th...
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Enhanced Output Power of Light-Emitting Diodes With Embedded Air-Gap Photonic Crystals by Nanosphere Lithography
Έκδοση 2017-01-01Λήψη πλήρους κειμένουLarge-scale two-dimensional air-gap photonic crystals (PhCs) were embedded in an n-type GaN layer to enhance the light emission of GaN-based light-emitting diodes (LEDs). The embedded-PhCs were obtained through overgrowth on n-GaN templates, which had air holes array previously fabricated by using n...
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Enhancing Both TM- and TE-Polarized Light Extraction Efficiency of AlGaN-Based Deep Ultraviolet Light-Emitting Diode via Air Cavity Extractor With Vertical Sidewall
Έκδοση 2018-01-01Λήψη πλήρους κειμένουIn this work, we investigate the effect of sidewall angle, height and space of an air cavity extractor (AC-Extractor) on the polarization-dependent light extraction efficiency (LEE) for AlGaN-based deep-ultraviolet light-emitting diodes (DUV LEDs) using three-dimensional finite difference time-domai...
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