Results 41 to 50 of about 2,020 (185)

High-Efficiency and High-Reliability Deep-UV Light-Emitting Diodes Using Transparent Ni-Implanted AlN Ohmic Electrodes

IEEE Access, 2021
Significant efforts have been devoted to improve the external quantum efficiency (EQE) of AlGaN-based top-emitting deep-UV light-emitting diodes (DUV LEDs).
Tae Hoon Park, Kyung Rock Son, Hideki Hirayama, Tae Geun Kim   +3 more
doaj   +1 more source

A Nonlinear Quantitative Model for Measuring Concentration Ratios From Raman Intensities

Journal of Raman Spectroscopy, EarlyView.
Estimating concentration from Raman intensity ratios is complicated by cross‐contributions from overlapping peaks, causing measured ratios to deviate from the linear behavior assumed in conventional quantitative models. This nonlinear method fully accounts for cross‐contributions, allowing estimation of concentration over several orders of magnitude ...
Joseph Razzell Hollis
wiley   +1 more source

Highly efficient AlGaN-based deep-ultraviolet light-emitting diodes: from bandgap engineering to device craft

Microsystems & Nanoengineering
AlGaN-based light-emitting diodes (LEDs) operating in the deep-ultraviolet (DUV) spectral range (210–280 nm) have demonstrated potential applications in physical sterilization.
Xu Liu, Zhenxing Lv, Zhefu Liao, Yuechang Sun, Ziqi Zhang, Ke Sun, Qianxi Zhou, Bin Tang, Hansong Geng, Shengli Qi, Shengjun Zhou   +10 more
doaj   +1 more source

Broadband Mode Converter With Customizable Modal Ratio Leveraging Subwavelength Engineering for Advanced Multimode Silicon Photonics

Laser &Photonics Reviews, EarlyView.
This work introduces a customizable mode converter for multimode silicon photonics, enabling precise control over the conversion ratio between optical modes. The device operates across a broad wavelength range (1350–1700 nm) with 15 distinct conversion levels.
Raquel Fernández de Cabo, Alejandro Sánchez‐Sánchez, Paula Nuño Ruano, Roy Ronald Prosopio Galarza, Daniele Melati, Carlos Alonso‐Ramos, Aitor V. Velasco, David González‐Andrade   +7 more
wiley   +1 more source

Band-Engineered Structural Design of High-Performance Deep-Ultraviolet Light-Emitting Diodes

Crystals, 2021
In this study, systematic structural design was investigated numerically to probe into the cross-relating influences of n-AlGaN layer, quantum barrier (QB), and electron-blocking layer (EBL) on the output performance of AlGaN deep-ultraviolet (DUV) light-
Jih-Yuan Chang, Man-Fang Huang, Chih-Yung Huang, Shih-Chin Lin, Ching-Chiun Wang, Yen-Kuang Kuo   +5 more
doaj   +1 more source

Dry Development of Dry Coated Sn‐Based Inorganic Resist for Defect‐Suppressed and High‐Resolution Patterning Process

Small Methods, EarlyView.
This work compares conventional wet development and asynchronously pulsed plasma development for Sn‐based inorganic resists under delay and AMC exposure. While wet development induces CD variation, scumming, and bridging, pulsed plasma enables selective removal of non‐exposed regions, mitigating contamination effects and achieving defect‐suppressed ...
Hee Ju Kim, Min Cheol Kim, Geun Young Yeom   +2 more
wiley   +1 more source

Direct Umbilical Vein Injection of Epinephrine with Cut-Cord Milking in an Ovine Model of Neonatal Resuscitation

Children
Background: An umbilical venous catheter (UVC) is the preferred route of epinephrine administration during neonatal resuscitation but requires specialized equipment, expertise, and time. Hypothesis: Direct injection of epinephrine into the umbilical vein
Payam Vali, Peggy Chen, Evan Giusto, Amy Lesneski, Morgan E. Hardie, Heather K. Knych, Deepika Sankaran, Ziad Alhassen, Houssam M. Joudi, Satyan Lakshminrusimha   +9 more
doaj   +1 more source

Improved Characteristics of AlGaN-Based Deep Ultraviolet Light-Emitting Diodes with Superlattice p-Type Doping

IEEE Photonics Journal, 2017
The photoelectric properties and physical mechanism of AlGaN-based deep ultraviolet light emitting diodes (DUV-LEDs) with the superlattice p-type doping layer (PSL) are studied numerically and compared with the Al-composition (50%) conventional p ...
Qianying Si, Hangyang Chen, Shuping Li, Shiqiang Lu, Junyong Kang   +4 more
doaj   +1 more source

Realization of electrically driven AlGaN micropillar array deep-ultraviolet light emitting diodes at 286 nm

AIP Advances, 2021
We report on the realization of top-down fabricated, electrically driven, deep-ultraviolet (DUV) AlGaN micropillar array light emitting diodes (LEDs) with high output power density.
Bryan Melanson, Matthew Hartensveld, Cheng Liu, Jing Zhang   +3 more
doaj   +1 more source

Integrating Chemical, Electrical, and Photonic Effects Into a Unified ETOP‐Based Plasma Dose Framework

High Voltage, EarlyView.
ABSTRACT In plasma medicine and biological applications, plasmas typically deliver a complex combination of reactive chemical species and multiple physical energy components. However, establishing a unified and comparable dose metric to characterise their integrated biological effects remains a major challenge that continues to limit progress in this ...
Erqi Wu, Jialin Liu, Zhiyu Li, Dawei Liu, Lanlan Nie, Xinpei Lu   +5 more
wiley   +1 more source