High performance sub-bandgap photodetection via internal photoemission based on ideal metal/2D-material van der Waals Schottky interface

Nanoscale ◽  
2021 ◽  
Author(s):  
Xuhong Li ◽  
Xiaoqing Chen ◽  
Songyu Li ◽  
Feihong Chu ◽  
Wenjie Deng ◽  
...  
Keyword(s):  
High Performance ◽  
Van Der Waals ◽  
2D Material ◽  
Internal Photoemission ◽  
The Ideal

A special laminating-flipping technique was introduced, which realized a sub-bandgap responsivity based on the internal photoemission of the ideal van der Waals Schottky interface.

scholarly journals High performance self-powered photodetector based on 1D Te-2D WS2 mixed-dimensional heterostructure

2021 ◽  
Author(s):  
Lixiang Han ◽  
Mengmeng Yang ◽  
Peiting Wen ◽  
Wei Gao ◽  
nengjie huo ◽  
...  
Keyword(s):  
High Performance ◽  
Van Der Waals ◽  
Sharp Interface ◽  
Two Dimensional ◽  
High Quality ◽  
One Dimensional ◽  
Self Powered

One dimensional (1D)-two dimensional (2D) van der Waals (vdWs) mixed-dimensional heterostructures with advantages of atomically sharp interface, high quality and good compatibility have attracted tremendous attention in recent years. The...

van der Waals Epitaxial Growth of Borophene on a Mica Substrate toward a High-Performance Photodetector

2021 ◽  
Author(s):  
Zenghui Wu ◽  
Guoan Tai ◽  
Runsheng Liu ◽  
Chuang Hou ◽  
Wei Shao ◽  
...  
Keyword(s):  
Epitaxial Growth ◽  
High Performance ◽  
Van Der Waals ◽  
Mica Substrate

Fermi‐Level Pinning Free High‐Performance 2D CMOS Inverter Fabricated with Van Der Waals Bottom Contacts

2021 ◽  
pp. 2001212
Author(s):  
Tien Dat Ngo ◽  
Zheng Yang ◽  
Myeongjin Lee ◽  
Fida Ali ◽  
Inyong Moon ◽  
...  
Keyword(s):  
Fermi Level ◽  
High Performance ◽  
Van Der Waals ◽  
Cmos Inverter ◽  
Fermi Level Pinning

scholarly journals High‐Performance Photodetector based on 3D Dirac Semimetal Cd 3 As 2 /WS 2 Van der Waals Heterojunction

2021 ◽  
pp. 2000194
Author(s):  
Xingchao Zhang ◽  
Rui Pan ◽  
Yunkun Yang ◽  
Qi Han ◽  
Xianchao Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Van Der Waals ◽  
Dirac Semimetal

Two-dimensional van der Waals graphene/transition metal nitride heterostructures as promising high-performance nanodevices

2021 ◽  
Author(s):  
Khang D. Pham ◽  
Cuong Q. Nguyen ◽  
C. V. Nguyen ◽  
Pham V. Cuong ◽  
Nguyen V. Hieu
Keyword(s):  
Transition Metal ◽  
High Performance ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Metal Nitride ◽  
Transition Metal Nitride ◽  
New Phenomena

Graphene-based van der Waals (vdW) heterostructures have attracted much attention because they can enhance the properties of separated materials, possess numerous new phenomena and unusual properties and improve the performance of devices.

Layer-dependent photocatalysts of GaN/SiC-based multilayer van der Waals heterojunctions for Hydrogen Evolution

2021 ◽  
Author(s):  
Bojun Peng ◽  
Liang Xu ◽  
Jian Zeng ◽  
Xiaopeng Qi ◽  
Youwen Yang ◽  
...  
Keyword(s):  
Band Gap ◽  
Hydrogen Evolution ◽  
High Performance ◽  
Van Der Waals ◽  
Environmentally Friendly ◽  
Wide Band ◽  
Two Dimensional ◽  
Wide Band Gap ◽  
Van Der Waals Heterostructures ◽  
Composite Photocatalysts

The development of non-precious, high-performance and environmentally friendly wide band gap semiconductor composite photocatalysts is highly desirable. Here we report two-dimensional (2D) GaN/SiC-based multilayer van der Waals heterostructures for hydrogen...

Electrophoresis-Microwave Synthesis of S, N-Doped Graphene Foam for High-Performance Supercapacitors

2021 ◽  
Author(s):  
Wenqiang Wang ◽  
Wenyi Zhang ◽  
Gengchao Wang ◽  
Chunzhong Li
Keyword(s):  
Electrode Material ◽  
Microwave Synthesis ◽  
High Performance ◽  
Three Dimensional ◽  
Graphene Foam ◽  
Composition And Structure ◽  
Doped Graphene ◽  
The Ideal

The three-dimensional self-standing architecture of heteroatom-doped graphene is the ideal electrode material for supercapacitors. However, the facile control of its composition and structure is still a challenge. Herein we have...

scholarly journals Percepción de los entrenadores de alto rendimiento de atletismo: caracterización de su perfil polifacético (Perception of high performance track and field coaches: characterization of their multifaceted profile)

Retos ◽  
2015 ◽  
pp. 42-47
Author(s):  
Angeles Filgueira Perez
Keyword(s):  
High Performance ◽  
Target Population ◽  
Track And Field ◽  
Personal Qualities ◽  
High Level ◽  
Almost All ◽  
Methodological Aspects ◽  
The Ideal

En el presente estudio se ha tratado de obtener una aproximación al perfil ideal del entrenador de alto rendimiento en atletismo. En el mundo del deporte de alta competición, el entrenador debe desarrollar funciones de maestro, técnico y líder, lo cual hace difícil delimitar sus competencias (conocimientos, habilidades y cualidades personales). Por tanto, la principal motivación de este trabajo es establecer el papel que debe desempeñar el entrenador para la preparación física, técnica, táctica, psicológica y moral del deportista de alto nivel. Para ello, se ha considerado como población objeto de estudio al conjunto de entrenadores de alto rendimiento que en el momento de la investigación estuviesen activo, ya que interesaba realizar este estudio desde su propia perspectiva. Los datos recogidos forman parte de una investigación más amplia, llevada a cabo mediante encuesta, para la que se diseñó un cuestionario de 78 preguntas en el que se abarcaban tres temas: el perfil del entrenador y del deportista, así como la figura del formador de entrenadores en el Practicum. En este trabajo nos centramos en el primer tema y el análisis de la información obtenida nos permite concluir que la que práctica totalidad de los entrenadores de atletismo consideran necesario dominar con precisión los aspectos técnico-metodológicos. Además, consideran que su ética profesional debe estar regida por los principios de autonomía y beneficencia, de modo que valores como la honestidad y la justicia deben primar en el desarrollo de sus funciones.Abstract: In the current study, we have tried to get an approximation of the ideal profile of high performance coaches in athletics. In the high-level sports world, the coach must develop the role of teacher, technician and leader,  which makes it difficult to delimit  his/her competencies (knowledge, skills and personal qualities). Therefore, the main motivation of this work is to define the role that the coach plays in relation  to the physical, technical, tactical, psychological and moral preparation of elite athletes. Keeping this aim as an objective, we have considered as the target population the high performance coaches who are active at the time of the investigation, since we were interested  in knowing their own perspective. The data that was collected is a part of a wider investigation, conducted by a survey, for which we designed a questionnaire of 78 questions divided on three topics: the profile of the coach and the athlete, as well as the figure of the coach educator in the Practicum. In this work, we focus on the first topic and the analysis of the information that we obtained allows us to conclude that almost all the track and field coaches find it necessary to dominate the technical and methodological aspects. They also consider that professional ethics must be governed by the principles of autonomy and care that values   like honesty and justice must prevail in the performance of their work.

Propelling Nozzle Research

1964 ◽  
Vol 68 (647) ◽  
pp. 717-727 ◽  
Author(s):  
W. G. E. Lewis
Keyword(s):  
High Speed ◽  
High Performance ◽  
Research Programme ◽  
Static Tests ◽  
Transport Aircraft ◽  
Supersonic Transport ◽  
Design Behaviour ◽  
Base Bleed ◽  
Critical Phases ◽  
The Ideal

SummaryThe current interest in supersonic transport aircraft makes it appropriate to consider the problems of propulsion nozzle systems for high speed flight. The discussion will be confined mainly to this field of activity.In the absence of external drag and weight factors, the ideal configuration to maintain optimum thrust at all flight speeds would employ a mechanically variable area ratio nozzle. By such means the jet flow could be fully and properly expanded at all times.A practical design to accommodate such variations is inherently complex, and so an alternative solution using aerodynamic techniques has been sought. It is necessary to remember that the success of whatever method is eventually chosen must rest on its ability to combine a high performance at cruise with very small loss during other critical phases of the flight plan.This paper describes some of the results of a nozzle research programme aimed primarily at solving the above problem, with an attempt to explain the philosophy behind the aerodynamic techniques tried. Some discussion is given of the experimental difficulties in establishing a sufficiently accurate standard of measurement for design point performance. In a few chosen configurations experimental results have been extensively backed by theoretical studies.The need to demonstrate off-design behaviour in the presence of an external flow field is stressed, with special reference to the misleading results often obtained from static tests.Finally, some attention is given to the question of base bleed, with its repercussions on the installation of the propulsion nozzle in an aircraft.

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