Results 41 to 50 of about 109,078 (298)

The reflection of diode technology light emitting (LED) on the modular design of external lighting

الاكاديمي, 2017
Search marked (the reflection of diode technology light emitting (LED) on the modular design of external lighting) is an analytical study of the units, external lighting for gardens and adopted in its work on the diode technology emitting light to reach ...
Esam Nouri Majeed
doaj   +1 more source

Waveguide Panel Display Using Electromechanical Spatial Modulators [PDF]

, 1998
A novel micro‐electro‐mechanical system (MEMS) approach in waveguide panel displays (WPD) is described. High efficiency electromechanical spatial modulators, based on the use of frustrated total internal reflection, were demonstrated.
Gulari, Erdogan, Zhou, Xiaochuan
core   +1 more source

Effect of selected luminescent layers on CCT, CRI, and response times [PDF]

, 2019
Phosphors have been used as wavelength converters in illumination for many years. When it is excited with blue light, the frequently used yttrium aluminium garnet doped with cerium (YAG:Ce) phosphor converts a part of blue light to a wideband yellow ...
Jargus, Jan, Martinek, Radek, Nedoma, Jan, Vašinek, Vladimír, Vitásek, Jan   +4 more
core   +1 more source

Spin injection from perpendicular magnetized ferromagnetic $\delta$-MnGa into (Al,Ga)As heterostructures

, 2006
Electrical spin injection from ferromagnetic $\delta$-MnGa into an (Al,Ga)As p-i-n light emitting diode (LED) is demonstrated. The $\delta$-MnGa layers show strong perpendicular magnetocrystalline anisotropy, enabling detection of spin injection at ...
Adelmann, C., Chiang, H. -S., Crowell, P. A., Hilton, J. L., Lou, X., McKernan, S., Palmstrom, C. J., Schultz, B. D.   +7 more
core   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Verification of the Effects of Red Light-emitting Diode Therapy on Acute Lung Injury in a Sepsis Model in Rats [PDF]

Brazilian Archives of Biology and Technology, 2020
The aim of this study was to evaluate the in vivo response of red light-emitting diode (LED) on acute lung injury (ALI) in a sepsis model in rats. Twenty rats were randomly allocated into two experimental groups (n=10): Control Sepsis Group (CS); sepsis ...
Willer Eduardo Alves, Carla Roberta Tim, Cintia Cristina Santi Martignago, Richard Liebano, Gomes Rodrigues Santos, Lívia Assis   +5 more
doaj   +1 more source

InGaN light-emitting diodes with indium-tin-oxide sub-micron lenses patterned by nanosphere lithography [PDF]

, 2012
Close-packed micro-lenses with dimensions of the order of wavelength have been integrated onto the indium-tin-oxide (ITO) layer of GaN light-emitting diodes employing nanosphere lithography.
Choi, HW, Li, KH, Zhang, Q
core   +1 more source

Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending

Advanced Engineering Materials, EarlyView.
This study investigates laser metal deposition of aluminum alloys EN AW‐7075 and EN AW‐5083, using powder blending to compensate zinc and magnesium evaporation. In situ alloying and ex situ alloying with ZnAl12 and AZ91 preserve near‐standard compositions and improve mechanical properties.
Finn Bendixen, Anastasiya Toenjes, Annika Bohlen, Thomas Seefeld   +3 more
wiley   +1 more source

A next-generation light-emitting device: ZOGAN LED with a heterogeneous p-layer composed of oxide and nitride semiconductors

AIP Advances
We have developed a light-emitting device, called the ZOGAN light-emitting diode (LED). The ZOGAN LED is formed with the p-layer composed of both ZnO-based oxide and GaN-based nitride semiconductors.
Yung Ryel Ryu, Sung Ki Hong, E. Fred Schubert, Dong-Min Jeon, Dong-Soo Shin, Jong-In Shim, Sang-Mook Kim, Jong Hyeob Baek   +7 more
doaj   +1 more source

Light Extraction Efficiency of GaN-Based Micro-Scale Light-Emitting Diodes Investigated Using Finite-Difference Time-Domain Simulation

IEEE Photonics Journal, 2020
We conducted a systematic investigation of the light extraction efficiency (LEE) of GaN-based vertical micro-scale light-emitting diode (μ-LED) structures using three-dimensional finite-difference time-domain (FDTD) simulations. The LEE of μ
Han-Youl Ryu, Jeongsang Pyo, Hyun Yeol Ryu   +2 more
doaj   +1 more source