Results 81 to 90 of about 18,647,368 (293)

Surface‐Plasmon‐Coupled Blue InGaN/GaN Micro‐LEDs with Oxide–Metal–Oxide Capping Layer Compatible to Chip Fabrication Process

Advanced Optical Materials, EarlyView.
A sidewall‐integrated oxide–metal–oxide architecture is demonstrated to overcome efficiency degradation in ultra‐small InGaN/GaN micro‐LEDs. Conformal Al2O3 passivation combined with plasmonic Ag nanoparticles enables localized surface plasmon–exciton coupling, converting surface‐related nonradiative losses into radiative emission.
Pil‐Kyu Jang, Lee‐Woon Jang, Ohbin Kwon, Yeong‐Hoon Cho, Sangbum Kim, Sang‐Ik Lee, Seungjae Baek, Jiwon Park, Myeongjun Choi, Jaeseung Kim, Taehwan Kim, Sung‐Un Kim, Min‐Seok Lee, Yong‐Ho Ra, Ki Hoon Nam, Seung Min Kwak, Alexander Y. Polyakov, In‐Hwan Lee   +17 more
wiley   +1 more source

Surface Properties of p‐GaN and Formation of Nickel Metal Contacts

Advanced Materials Interfaces
Nickel (Ni) is the key component in ohmic contacts for Mg‐doped p‐GaN, but the detailed formation mechanisms of the ohmic contact have not yet been understood.
Mikko Miettinen, Vesa Nuutila, Zahra Jahanshah Rad, Masoud Ebrahimzadeh, Anni Ruokonen, Risto Punkkinen, Juha‐Pekka Lehtiö, Marko Punkkinen, Pekka Laukkanen, Kalevi Kokko, Sami Suihkonen, Hele Savin, Weimin Wang   +12 more
doaj   +1 more source

Effect of p-GaN layer thickness on the performance of p-i-n structure GaN ultraviolet photodetectors

, 2008
We investigated the influence of thickness of p-GaN layer on the performance of p-i-n structure GaN ultraviolet photodetector. Through the simulation calculation, it was found that both the quantum efficiency and dark current of device decrease when ...
Zhao, DG, Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China. 电子邮箱地址: dgzhao@red.semi.ac.cn, Zhao, DG, Zhou, M   +2 more
core  

Reverse current suppression of p-GaN diode using SiOx interlayer

p-GaN diodes exhibit large reverse currents due to poor Schottky contacts between p-GaN and metal, which hinders their application in environmentally robust power systems and GaN complementary metal–oxide–semiconductor (CMOS) integration.
Kumar, Mritunjay, Ren, Kexin, Li, Xiaohang, Liu, Zhiyuan, Jiang, Zixian, Pan, Zuojian, Wang, ChuanJu, Liu, Tingang, Xiao, Na, Cao, Haicheng   +9 more
core   +1 more source

Learning Highly Dynamic Skills Transition for Quadruped Jumping Through Constrained Space

Advanced Robotics Research, EarlyView.
A quadruped robot masters dynamic jumps through constrained spaces with animal‐inspired moves and intelligent vision control. This hierarchical learning approach combines imitation of biological agility with real‐time trajectory planning. Although legged animals are capable of performing explosive motions while traversing confined spaces, replicating ...
Zeren Luo, Jiahui Zhang, Yimin Han, Ji Ma, Minghao Lu, Ioannis Havoutis, Peng Lu   +6 more
wiley   +1 more source

Effect of X-ray irradiation on threshold voltage of AlGaN/GaN HEMTs with p-GaN and MIS Gates

Nanotechnology and Precision Engineering, 2020
Commercially available AlGaN/GaN high-electron-mobility transistors (HEMTs) are beginning to enter the public scene from a range of suppliers. Based on previous studies, commercial GaN-based electronics are expected to be tolerant to different types of ...
Yongle Qi, Denggui Wang, Jianjun Zhou, Kai Zhang, Yuechan Kong, Suzhen Wu, Tangsheng Chen   +6 more
doaj   +1 more source

Stable Imitation of Multigait and Bipedal Motions for Quadrupedal Robots Over Uneven Terrains

Advanced Robotics Research, EarlyView.
How are quadrupedal robots empowered to execute complex navigation tasks, including multigait and bipedal motions? Challenges in stability and real‐world adaptation persist, especially with uneven terrains and disturbances. This article presents an imitation learning framework that enhances adaptability and robustness by incorporating long short‐term ...
Erdong Xiao, Yinzhao Dong, Ji Ma, Peng Lu   +3 more
wiley   +1 more source

Pulsed operation and performance of commercial GaN HEMTs

, 2009
The present study investigates the behaviour and performance of commercially available GaN HEMTs provided by Cree Inc. The gain and power variations at pulse repetition frequencies (PRFs) in the range 100–400 kHz are presented.
Morris, KA, Beach, MA, Fornetti, F
core  

Information Transmission Strategies for Self‐Organized Robotic Aggregation

Advanced Robotics Research, EarlyView.
In this review, we discuss how information transmission influences the neighbor‐based self‐organized aggregation of swarm robots. We focus specifically on local interactions regarding information transfer and categorize previous studies based on the functions of the information exchanged.
Shu Leng, Zihan Li, Yifeng Shao, Jinhao Liu, Li Yu, Shuguang Li   +5 more
wiley   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

Advanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang, J. An, X. Zheng, D. Wang, S. Wang, X. Wang, P. Zhu, J. Pei, S. Li, J. Paripurana, Y. Han, Z. Tang, X. Gan, Q. He, X. Ma   +14 more
wiley   +1 more source