Results 21 to 30 of about 36,602 (214)

Optical engineering of PbS colloidal quantum dot solar cells via Fabry–Perot resonance and distributed Bragg reflectors

Nano Convergence, 2023
A tradeoff between light absorption and charge transport is a well-known issue in PbS colloidal quantum dot (CQD) solar cells because the carrier diffusion length in PbS CQD films is comparable to the thickness of CQD film. We reduce the tradeoff between
Sumin Bae, Matthew Duff, Jun Young Hong, Jung-Kun Lee   +3 more
doaj   +1 more source

Void Hole Avoidance for Reliable Data Delivery in IoT Enabled Underwater Wireless Sensor Networks

Sensors, 2018
Due to the limited availability of battery power of the acoustic node, an efficient utilization is desired. Additionally, the aquatic environment is harsh; therefore, the battery cannot be replaced, which leaves the network prone to sudden failures. Thus,
Arshad Sher, Aasma Khan, Nadeem Javaid, Syed Hassan Ahmed, Mohammed Y Aalsalem, Wazir Zada Khan   +5 more
doaj   +1 more source

Dragon blood resin ameliorates steroid-induced osteonecrosis of femoral head through osteoclastic pathways

Frontiers in Cell and Developmental Biology, 2023
Objective: Dragon’s Blood resin (DBR) is a traditional medicinal substance renowned for its diverse pharmacological effects, which consists of potent anti-inflammatory, antioxidant and angiogenic properties.
Yuhao Liu, Liang Mo, Hongduo Lu, Yangwenxiang Wei, Jiahao Zhang, Samuel Bennett, Jiake Xu, Jiake Xu, Chi Zhou, Bin Fang, Zhenqiu Chen   +10 more
doaj   +1 more source

Ultrashort Q-switched pulses from a passively mode-locked distributed Bragg reflector semiconductor laser [PDF]

, 2012
A compact semiconductor mode-locked laser (MLL) is presented that demonstrates strong passive Q-switched mode-locking over a wide range of drive conditions.
Cheung, Flynn, G. Mezösi, Heck, Huttl, Lu, Marc Sorel, Marco Zanola, Michael J. Strain, Stolarz, Strain, Thompson, Thompson   +12 more
core   +1 more source

Effect of Dielectric Distributed Bragg Reflector on Electrical and Optical Properties of GaN-Based Flip-Chip Light-Emitting Diodes

Micromachines, 2018
We demonstrated two types of GaN-based flip-chip light-emitting diodes (FCLEDs) with distributed Bragg reflector (DBR) and without DBR to investigate the effect of dielectric TiO2/SiO2 DBR on optical and electrical characteristics of FCLEDs.
Shengjun Zhou, Haohao Xu, Mengling Liu, Xingtong Liu, Jie Zhao, Ning Li, Sheng Liu   +6 more
doaj   +1 more source

InGaN Resonant-Cavity Light-Emitting Diodes with Porous and Dielectric Reflectors

Applied Sciences, 2020
InGaN based resonant-cavity light-emitting diode (RC-LED) structures with an embedded porous-GaN/n-GaN distributed Bragg reflector (DBR) and a top dielectric Ta2O5/SiO2 DBR were demonstrated.
Cheng-Jie Wang, Ying Ke, Guo-Yi Shiu, Yi-Yun Chen, Yung-Sen Lin, Hsiang Chen, Chia-Feng Lin   +6 more
doaj   +1 more source

Die Blackbox ausleuchten. Potenziale von Design-Based Research für Phasen der Lehrerinnen- und Lehrerprofessionalisierung

Beiträge zur Lehrerinnen- und Lehrerbildung, 2020
Design-Based Research (DBR) wird als Forschungsstil in den letzten Jahren auch im deutschsprachigen Raum verstärkt genutzt. DBR meint die Arbeit mit einem doppelten Erkenntnisinteresse: das Entwickeln von Unterrichtsdesigns für die unterrichtliche ...
Isolde Malmberg
doaj   +1 more source

Risk Factors of Duodenobiliary Reflux-Related Dysfunction of Covered Biliary Metal Stents after Treatment of Duodenal Stricture in Patients with Malignant Biliary and Duodenal Obstruction

Current Oncology, 2021
Duodenal obstruction is often accompanied with unresectable malignant distal biliary obstruction in patients who have undergone biliary self-expandable metal stent (SEMS) placement.
Chi-Huan Wu, Mu-Hsien Lee, Yung-Kuan Tsou, Cheng-Hui Lin, Kai-Feng Sung, Kuang-Tse Pan, Nai-Jen Liu   +6 more
doaj   +1 more source

A Widely Tunable Three-Section DBR Lasers for Multi-Species Gas Detection

Applied Sciences, 2021
We demonstrate a widely tunable distributed Bragg reflector (DBR) laser operating at 1.8-µm, in which the DBR section was butt-jointed InGaAsP (λ = 1.45 μm) material. Through current and temperature tuning, a widely tuning range of over 11 nm with a side
Hongyan Yu, Jiaoqing Pan, Xuliang Zhou, Hui Wang, Liang Xie, Wei Wang   +5 more
doaj   +1 more source

A stateless opportunistic routing protocol for underwater sensor networks [PDF]

, 2018
Routing packets in Underwater Sensor Networks (UWSNs) face different challenges, the most notable of which is perhaps how to deal with void communication areas.
Boutaleb, Tuleen, Ghoreyshi, Seyed Mohammad, Shahrabi, Alireza   +2 more
core   +1 more source