Results 101 to 110 of about 71,119 (272)

Brief Review of Sub-Kelvin Refrigeration Technology

open access: yesZhileng xuebao
Sub-Kelvin refrigeration technology (<1 K) is a critical supporting technology for cutting-edge physics research and quantum technology. Currently, it mainly includes adsorption refrigeration, dilution refrigeration, and adiabatic demagnetization ...
Dai Wei   +3 more
doaj  

Relative Cooling Power Enhancement by Tuning Magneto-structural Stability in Ni-Mn-In Heusler Alloys

open access: yes, 2018
Off-stoichiometric Ni$_2$MnIn Heusler alloys have drawn recent attention due to their large magnetocaloric entropy change associated with the first-order magneto-structural transition. Here we present crystal structural, calorimetric and magnetic studies
Bruno, Nickolaus M.   +7 more
core   +1 more source

Gallium Nitride Semiconductor Resonant Tunneling Transistor

open access: yesAdvanced Science, EarlyView.
Three‐terminal GaN semiconductor resonant tunneling transistors (RTTs), which comprise an double‐barrier AlN/GaN/AlN resonant tunneling diode integrated with a GaN high‐electron‐mobility transistor (HEMT) through epitaxial growth in series and parallel configuraions, respectively.
Fang Liu   +15 more
wiley   +1 more source

Mechanical properties of the magnetocaloric intermetallic LaFe11.2Si1.8 alloy at different length scales

open access: yes, 2019
In this work the global and local mechanical properties of the magnetocaloric intermetallic LaFe11.2Si1.8 alloy are investigated by a combination of different testing and characterization techniques in order to shed light on the partly contradictory data
Eckert, Jurgen   +6 more
core   +1 more source

Neuroprotective Effects of Time‐Restricted Feeding Combined With Different Protein Sources in MPTP‐Induced Parkinson's Disease Mice Model and Its Modulatory Impact on Gut Microbiota Metabolism

open access: yesAdvanced Science, EarlyView.
Time‐restricted feeding (TRF) exerts protein‐dependent neuroprotective effects in an MPTP‐induced Parkinson's disease model. In casein‐fed mice, TRF improves gut barrier integrity and reduces neuroinflammation, possibly via modulation of Allobaculum and BCAAs.
Ting Li   +12 more
wiley   +1 more source

Dead Matter, Living Machines: Repurposing Crustaceans' Abdomen Exoskeleton for Bio‐Hybrid Robots

open access: yesAdvanced Science, EarlyView.
Crustacean exoskeletons, repurposed from food waste, are engineered into sustainable bending actuators combining biotic structure with synthetic control. The augmented exoskeletons achieve rapid and robust motion with lightweight body and can be used as part of robotic manipulators, grippers and swimmers.
Sareum Kim, Kieran Gilday, Josie Hughes
wiley   +1 more source

Analysis of Torsional Tensile Thermal Effect of Natural Rubber at Different Temperatures

open access: yesZhileng xuebao, 2022
Thermoelastic refrigeration is a solid-state technology that produces a refrigeration effect by driving the phase change of thermoelastic materials with a stress field.
Yang Meng   +3 more
doaj  

An Elastocaloric Polymer with Ultra‐High Solid‐State Cooling via Defect Engineering

open access: yesAdvanced Science, EarlyView.
This work reports a defect‐engineering strategy that enables a record‐high adiabatic temperature change of up to 8.14 ± 1.76 °C in elastomers at an elevated temperature above 65 °C. Combined experimental and theoretical efforts reveal that increasing dangling‐chain defects nonmonotonically impacts the elastocaloric cooling performance of polymers due ...
Zhaohan Yu   +11 more
wiley   +1 more source

Photoluminescent cooling with incoherent light

open access: yesAPL Photonics
Optical refrigeration using anti-Stokes photoluminescence is now well established, especially for rare-earth-doped solids where cooling to cryogenic temperatures has recently been achieved.
Sushrut Ghonge   +2 more
doaj   +1 more source

Magnetic heat pumping [PDF]

open access: yes, 1983
The method employs ferromagnetic or ferromagnetic elements, preferably of rare-earth based material, for example gadolinium, and preferably employs a regenerator. The steps comprise controlling the temperature and applied magnetic field of the element to
Brown, G. V.
core   +1 more source

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