Results 81 to 90 of about 21,020,521 (317)

Field‐Effect Transistors from Artificial Charged Domain Walls in Stacked Van der Waals Ferroelectric α‐In2Se3

open access: yesAdvanced Materials, EarlyView.
This study utilizes the van der Waals stacking of ferroelectric α$\alpha$‐In2Se3 to fabricate in‐plane artificial charged domain walls. These charged domain walls are electrically accessible, gate‐tunable, and show 2–9 orders of magnitude higher conductance than charged domain walls from thin film ferroelectrics, allowing their integration in field ...
Shahriar Muhammad Nahid   +6 more
wiley   +1 more source

Patterned growth of InGaN/GaN quantum wells on freestanding GaN grating by molecular beam epitaxy

open access: yesNanoscale Research Letters, 2011
We report here the epitaxial growth of InGaN/GaN quantum wells on freestanding GaN gratings by molecular beam epitaxy (MBE). Various GaN gratings are defined by electron beam lithography and realized on GaN-on-silicon substrate by fast atom beam etching.
Wang Yongjin, Hu Fangren, Hane Kazuhiro
doaj  

Effect of P-Type GaN Buried Layer on the Temperature of AlGaN/GaN HEMTs

open access: yesMicromachines, 2023
In this paper, a P-type GaN buried layer is introduced into the buffer layer of AlGaN/GaN HEMTs, and the effect of the P-type GaN buried layer on the device’s temperature characteristics is studied using Silvaco TCAD software.
Hanghang Lv   +11 more
doaj   +1 more source

p-GaN Selective Passivation via H Ion Implantation to Obtain a p-GaN Gate Normally off AlGaN/GaN HEMT

open access: yesElectronics, 2023
A dependable and robust technique for nanomachining is ion implantation. In this work, hydrogen (H) ion implantation was used, for the first time, to passivate p-GaN, except for the gate area, in order to create a normally off p-GaN/AlGaN/GaN high-electron-mobility transistor (HEMT).
Xiaoyu Ding   +8 more
openaire   +1 more source

Gate stability of GaN-Based HEMTs with P-Type Gate [PDF]

open access: yes, 2016
status ...
Decoutere, S.   +10 more
core   +2 more sources

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

open access: yesAdvanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz   +5 more
wiley   +1 more source

Visualizing an adjustable WO3/p-GaN heterojunction

open access: yes, 2020
8 pages, 2 ...
Chen, Yuliang   +3 more
openaire   +2 more sources

Demonstration of Forward Inter-band Tunneling in GaN by Polarization Engineering

open access: yes, 2011
We report on the design, fabrication, and characterization of GaN interband tunnel junction showing forward tunneling characteristics. We have achieved very high forward tunneling currents (153 mA/cm2 at 10 mV, and 17.7 A/cm2 peak current) in ...
Krishnamoorthy, Sriram   +2 more
core   +1 more source

Learning Highly Dynamic Skills Transition for Quadruped Jumping Through Constrained Space

open access: yesAdvanced 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   +6 more
wiley   +1 more source

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

open access: yesAdvanced 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   +3 more
wiley   +1 more source

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