Results 51 to 60 of about 109,078 (298)

All-silicon light-emitting diodes waveguide-integrated with superconducting single-photon detectors

, 2017
We demonstrate cryogenic, electrically-injected, waveguide-coupled Si light-emitting diodes (LEDs) operating at 1.22 $\mu$m. The active region of the LED consists of W centers implanted in the intrinsic region of a $p$-$i$-$n$ diode.
Buckley, Sonia, Chiles, Jeffrey, McCaughan, Adam N., Mirin, Richard P., Moody, Galan, Nam, Sae Woo, Shainline, Jeffrey M., Silverman, Kevin L., Stevens, Martin J.   +8 more
core   +1 more source

Sustainable Synthesis of Bio‐Based Magnetic and Conductive Wood for Electromagnetic Interference Shielding Applications

Advanced Engineering Materials, EarlyView.
A wood‐based magnetic and conductive material called Magwood (MW), capable of blocking almost 99.99% of electromagnetic waves (in the X‐band frequency range), is synthesized using a simple, solvent‐free process. MW is lightweight, resists water, and is flame‐retardant, making it a promising alternative for shielding electronics. The rapid proliferation
Akash Madhav Gondaliya, Majed Amini, Mohammad Arjmand, Earl Johan Foster   +3 more
wiley   +1 more source

Proof-of-Concept Simulasi Kadar Saturasi Oksigen untuk Evaluasi Pulse Oximeter

Jurnal Elkomika, 2018
ABSTRAKSimulator SpO2 yang mengemulasikan sinyal yang ekuivalen dengan saturasi oksigen pada manusia, dapat digunakan untuk evaluasi repeatibility pulse oximeter. Simulator ini tersedia di pasaran dengan harga yang cukup mahal di Indonesia, di kisaran 80-
FUAD UGHI
doaj   +1 more source

Mechanism of enhanced light output in InGaN-based microlight emitting diodes [PDF]

, 2003
Micro-light emitting diode (LED) arrays with diameters of 4 to 20 mum have been fabricated and were found to be much more efficient light emitters compared to their broad-area counterparts, with up to five times enhancement in optical power densities ...
Choi, H. W., Dawson, M. D., Edwards, P. R., Jeon, C. W., Martin, R. W., Tripathy, S.   +5 more
core   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

Advanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar, Matthew Large, Andrea Ciavatti, Laura Basiricò, Beatrice Fraboni, Paul J. Sellin, Attila J. Mozer, Marco Petasecca, Matthew J. Griffith   +8 more
wiley   +1 more source

Diffraction Properties and Application of 3D Polymer Woodpile Photonic Crystal Structure [PDF]

, 2019
We present a new technique for modification of diffraction and optical properties of photonic devices by surface application of polymer Three-Dimensional (3D) woodpile Photonic Crystal (PhC) structure.
Dawidowski, Wojciech, Goraus, Matej, Kováč, Jaroslav, Pudiš, Dušan, Sciana, Beata, Skriniarová, Jaroslava, Urbancová, Petra, Šušlík, Ľuboš   +7 more
core   +2 more sources

Photoactivation of NV Centers in Diamond via Continuous Wave Laser Illumination of Shallow As‐Implanted Nitrogen

Advanced Functional Materials, EarlyView.
This study demonstrates an alternative method of creating charge‐stable negatively charged nitrogen vacancy (NV−) centers close to the diamond surface without high‐temperature annealing. By illuminating nitrogen‐implanted regions with a continuous‐wave 405 nm laser, NV− centers are induced, exhibiting electron spin coherence properties suitable for ...
Jens Fuhrmann, Christoph Findler, Michael Olney‐Fraser, Lev Kazak, Fedor Jelezko   +4 more
wiley   +1 more source

A Single-Stage High-Power-Factor Light-Emitting Diode (LED) Driver with Coupled Inductors for Streetlight Applications

Applied Sciences, 2017
This paper presents and implements a single-stage high-power-factor light-emitting diode (LED) driver with coupled inductors, suitable for streetlight applications.
Chun-An Cheng, Chien-Hsuan Chang, Hung-Liang Cheng, Ching-Hsien Tseng, Tsung-Yuan Chung   +4 more
doaj   +1 more source

A Software-Defined Multi-Element VLC Architecture

, 2017
In the modern era of radio frequency (RF) spectrum crunch, visible light communication (VLC) is a recent and promising alternative technology that operates at the visible light spectrum.
Eroglu, Yusuf Said, Guvenc, Ismail, Mushfique, Sifat Ibne, Pala, Nezih, Palathingal, Prabath, Yuksel, Murat   +5 more
core   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source