Results 241 to 250 of about 197,808 (272)

Monolithic Integration of GaN Thin Film and GaN Nanorods Pixels: Facile Growth of InGaN/GaN Quantum Wells for the Realization of Full Color Micro‐LED Display

Advanced Optical Materials, EarlyView.
This work implements an advanced lithographic technique to fabricate a template to exploit the indium incorporation efficiency of crystallographic orientations of GaN and demonstrates green and blue self‐emissive µLED pixels through an integration of MOCVD growth technique, device fabrication and phosphor conversion for the realization of full‐color ...
Mandar A. Kulkarni, Hyesu Ryu, Sohyeon Park, Tae Kyoung Kim, Sangjin Min, Seung Hyun Shin, Hamza Thaalbi, Fawad Tariq, Sang Hyun Lee, Ho Won Jang, Joon Seop Kwak, Dong‐Soo Shin, Pyoung Gug Kim, Sang‐Wan Ryu   +13 more
wiley   +1 more source

A system on the brink. [PDF]

CMAJ
Langer M.
europepmc   +1 more source

Understanding the Temperature Conditions for Controlled Splicing Between Silica and Fluoride Fibers

Advanced Photonics Research, EarlyView.
Thermal splicing conditions are investigated between silica and ZrF4 fibers, focusing on mechanical strength. A fiber Bragg grating characterises the thermal profile in the filament splicer's hot zone. Results indicate a narrow temperature window for strong joints.
Antreas Theodosiou, Ori Henderson‐Sapir, Yauhen Baravets, Oliver T. Cobcroft, Samuel M. Sentschuk, Jack A. Stone, David J. Ottaway, Pavel Peterka   +7 more
wiley   +1 more source

Witnessing the onset of reionization through Lyman-α emission at redshift 13. [PDF]

Nature
Witstok J, Jakobsen P, Maiolino R, Helton JM, Johnson BD, Robertson BE, Tacchella S, Cameron AJ, Smit R, Bunker AJ, Saxena A, Sun F, Alberts S, Arribas S, Baker WM, Bhatawdekar R, Boyett K, Cargile PA, Carniani S, Charlot S, Chevallard J, Curti M, Curtis-Lake E, D'Eugenio F, Eisenstein DJ, Hainline KN, Jones GC, Kumari N, Maseda MV, Pérez-González PG, Rinaldi P, Scholtz J, Übler H, Williams CC, Willmer CNA, Willott C, Zhu Y.   +36 more
europepmc   +1 more source

Downshifting Layer of Europium‐Doped NaGdF4: From the Optimization of the Sol–Gel Process to the Luminescent Properties

Advanced Photonics Research, EarlyView.
The present approach proposes a high yield production method, using an inexpensive equipment, for the fabrication of lanthanide‐doped ternary fluoride films having high crystallinity and a very homogeneous surface. This efficient sol–gel/spin‐coating approach produces, selectively and reproducibly, the hexagonal undoped and Eu‐doped NaGdF4 films.
Anna Lucia Pellegrino, Francesca Lo Presti, Francesca Loschi, Adolfo Speghini, Graziella Malandrino   +4 more
wiley   +1 more source

Extreme quasars illuminate the fast lives of the first black holes. [PDF]

Proc Natl Acad Sci U S A
Croswell K.
europepmc   +1 more source

High‐Detectivity GeSn Mid‐Infrared Photodetectors for Sensitive Infrared Spectroscopy

Advanced Photonics Research, EarlyView.
This work introduces a complementary metal‐oxide‐semiconductor (CMOS)‐compatible, high‐detectivity mid‐infrared GeSn photodetector monolithically integrated on a silicon platform. Enabled by an innovative composition‐gradient GeSn buffer, the high‐quality, thick GeSn active layer delivers exceptional responsivity and detectivity across the mid‐infrared
Meng‐Hsien Chou, Radhika Bansal, Yue‐Tong Jheng, Greg Sun, Wei Du, Shui‐Qing Yu, Guo‐En Chang   +6 more
wiley   +1 more source

Repository for extended dark matter object constraints. [PDF]

Eur Phys J C Part Fields
Croon D, Sevillano Muñoz S.
europepmc   +1 more source

Diffractive Synthesis of Multipole Interference States Using Low‐Index Mesoscale Dielectric Structures

Advanced Photonics Research, EarlyView.
Multipole interference (MPI) plays pivotal roles in electromagnetics. In optics, it has been realized typically with the Mie resonance in high‐index, deep‐subwavelength‐scale dielectric resonators. A new, diffraction‐based MPI scheme is proposed and demonstrated with low‐index, mesoscale dielectric structures.
Rabiul Islam Sikder, Myung Gi Ji, Jaeyoun Kim   +2 more
wiley   +1 more source

Cardiac Complications Associated With COVID-19 Vaccination: A Systematic Review of Cohort Studies. [PDF]

Cureus
Banerjee I, Robinson J, Banerjee I.
europepmc   +1 more source