Results 51 to 60 of about 5,994,596 (302)

An Adaptive Inhibitory WSe2 Transistor for Retinomorphic In‐Sensor Image Processing

open access: yesAdvanced Functional Materials, EarlyView.
Conventional retinomorphic devices typically require deliberate gate‐bias tuning for each illumination condition. In this paper, we demonstrate an adaptive inhibitory WSe2 transistor that uses photo‐induced regime shift between the subthreshold and accumulation modes to achieve decision‐free, intensity‐adaptive image processing within a single pixel ...
Juhwan Baek   +12 more
wiley   +1 more source

A Study on the Design and Implementation Technologies of EVA at the China Space Station

open access: yesAerospace
Extravehicular activity (EVA) is a key point and a difficult point for manned spaceflight tasks, as well as an inevitable trend in the development of the manned spaceflight industry.
Xuedong Li   +3 more
doaj   +1 more source

Biodegradable 3D‐Printable and Coatable Antifouling Composites for Marine Applications

open access: yesAdvanced Functional Materials, EarlyView.
Marine biofouling damages submerged surfaces and raises greenhouse gas emissions. Biodegradable antifouling biocomposites were developed by hot‐mixing beeswax, Tween 80, and calcium stearate or stearic acid. Adjusting the component ratio enables processing via hot‐pressing, 3D‐printing, or dip‐coating.
Gabriele Corigliano   +17 more
wiley   +1 more source

Modeling, Simulation and Control of a Spacecraft: Automated Rendezvous under Positional Constraints

open access: yesAerospace
The aim of this research paper is to propose a framework to model, simulate and control the motion of a small spacecraft in the proximity of a space station.
Simone Fiori   +3 more
doaj   +1 more source

Reaction‐Time pH Stabilization by Poly(acrylic acid) with Ethanol‐Mediated Growth Control for Efficient Hydrothermal Sb2(S,Se)3 Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
Poly(acrylic acid) acts as a reaction‐time pH buffer during hydrothermal Sb2(S,Se)3 growth through its COOH/COO‐ equilibrium. When combined with ethanol‐regulated growth, this buffering strategy reduces Sb‐O related surface disorder, improves local electronic uniformity and carrier collection, and increases the champion solar‐cell efficiency to 10.25%,
Juhee Lee   +7 more
wiley   +1 more source

Multidimensional‐Encoded High‐Fidelity Spectrometers With a Floating‐Base Bipolar Junction

open access: yesAdvanced Functional Materials, EarlyView.
A floating‐base bipolar junction photodetector enables multidimensional spectral encoding through synergistic gate‐ and drain‐bias modulation of interfacial barrier matching. The resulting complementary spectral responses form a diverse, weakly correlated response matrix, enabling robust and high‐fidelity spectral reconstruction even at sub‐nanoampere ...
Sang‐Hyeon Lee   +11 more
wiley   +1 more source

Design and Implementation of a Generalized Safety Fault Diagnosis System for China Space Station Scientific Experimental Rack

open access: yesSensors
As astronauts stay in the China Space Station for a long time during the operation phase, how to ensure the long-term safety of the scientific experimental rack (SER) in the field of space application is a problem that needs to be solved urgently.
Yifeng Wang   +4 more
doaj   +1 more source

Human Spaceflight [PDF]

open access: yesفناوری در مهندسی هوافضا, 2019
The long-standing human desire to flight began with light balloons and planes. later, it was built and used to launch fast jets, missiles, and high-speed spaceships. As a result, human beings started to land and fly, as well as crossing the vast cores of
Ahmadreza Aliakbari
doaj  

Information control system for space experiments onboard international space station

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2017
The paper considers development of the Information Control System (ICS) of the Russian Segment of the International Space Station (ISS). The main ICS modules for carrying out scientific experiments comprise the Service Module, the Multipurpose Laboratory
F. A. Voronin, I. V. Dunaeva
doaj   +1 more source

Neuromorphic Devices for Extreme Environments: State‐Variable Reliability and Stabilization Strategies

open access: yesAdvanced Functional Materials, EarlyView.
Neuromorphic devices for extreme environments are interpreted through the physical states that store and process information. Radiation, temperature extremes, and vacuum can perturb vacancies, filaments, trapped charges, polarization, interfaces, and readout signals.
Taehyun Park   +7 more
wiley   +1 more source

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