Results 61 to 70 of about 2,872,752 (258)

Quantum, cyclic and particle-exchange heat engines

, 2004
Differences between the thermodynamic behavior of the three-level amplifier (a quantum heat engine based on a thermally pumped laser) and the classical Carnot cycle are usually attributed to the essentially quantum or discrete nature of the former.
Allahverdyan, Callen, Chua, Chua, Curzon, De Vos, De Vos, Feldmann, Geusic, Geva, Geva, Geva, Green, H. Linke, Hatsopoulos, Hoffmann, Humphrey, Humphrey, Humphrey, Landau, Leff, Lloyd, Miller, Nolas, Parrott, Ramsey, Ries, Scovil, Scully, Scully, Shockley, T.E. Humphrey, Würfel, Würfel   +33 more
core   +1 more source

Salt‐Compact Albumin as a New Pure Protein‐based Biomaterials: From Design to In Vivo Studies

Advanced Healthcare Materials, Volume 14, Issue 7, March 14, 2025.
A new class of materials built entirely of native albumin protein is designed using a simple protocol based on salt‐assisted compaction, breaking with current crosslinking strategies. This green process leads, surprisingly, to water‐insoluble handable materials with high preservation of their native protein structures and Young's modulus close to that ...
Eya Aloui, Jordan Beurton, Claire Medemblik, Ludivine Hugoni, Igor Clarot, Ariane Boudier, Youri Arntz, Marcella De Giorgi, Jérôme Combet, Guillaume Fleith, Eric Mathieu, Naji Kharouf, Leyla Kocgozlu, Benoît Heinrich, Damien Favier, Michael Brender, Fouzia Boulmedais, Pierre Schaaf, Benoît Frisch, Philippe Lavalle   +19 more
wiley   +1 more source

The myth of the high-efficiency external-combustion Stirling engine [PDF]

, 2015
The reported discrepancy between theory and experiment for external combustion Stirling engines is explained by the addition of thermal resistance of the combustion gasses to the standard Carnot model. In these cases, the Stirling engine ideal efficiency
Riley, Paul Howard
core   +2 more sources

AI‐Driven Defect Engineering for Advanced Thermoelectric Materials

Advanced Materials, EarlyView.
This review presents how AI accelerates the design of defect‐tuned thermoelectric materials. By integrating machine learning with high‐throughput data and physics‐informed representations, it enables efficient prediction of thermoelectric performance from complex defect landscapes.
Chu‐Liang Fu, Mouyang Cheng, Nguyen Tuan Hung, Eunbi Rha, Zhantao Chen, Ryotaro Okabe, Denisse Córdova Carrizales, Manasi Mandal, Yongqiang Cheng, Mingda Li   +9 more
wiley   +1 more source

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

Advanced 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, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

Curcuminoid Derivatives with a Donor‐Acceptor‐Donor Architecture: an Outstanding Platform for Highly‐Efficient Near‐Infrared Electroluminescence and Amplified Spontaneous Emission

Advanced Optical Materials, EarlyView.
Curcuminoid boron difluoride dyes containing triphenylamine units are prepared and their photophysical and electrochemical properties are investigated. These new light‐emitting dyes are used in organic light‐emitting diodes (OLEDs) emitting at 800 nm with 1% external quantum efficiency, and show low threshold amplified spontaneous emission in thin ...
Anthony D'Aléo, Xun Tang, Dae‐Hyeon Kim, Danillo Valverde, Elena Zaborova, Gabriel Canard, Arnaud Brosseau, Loïc Mager, Gilles Clavier, Chihaya Adachi, Yoann Olivier, Jean‐Charles Ribierre   +11 more
wiley   +1 more source

Effect of Heat Leak and Finite Thermal Capacity on the Optimal Configuration of a Two-Heat-Reservoir Heat Engine for Another Linear Heat Transfer Law

Entropy, 2003
: Based on a model of a two-heat-reservoir heat engine with a finite high-temperature source and bypass heat leak, the optimal configuration of the cycle is found for the fixed cycle period with another linear heat transfer law .
Chih Wu, Fengrui Sun, Lingen Chen, Tong Zheng   +3 more
doaj   +1 more source

Linear irreversible heat engines based on the local equilibrium assumptions [PDF]

, 2015
We formulate an endoreversible finite-time Carnot cycle model based on the assumptions of local equilibrium and constant energy flux, where the efficiency and the power are expressed in terms of the thermodynamic variables of the working substance.
Izumida, Yuki, Okuda, Koji
core   +2 more sources

General Screening Rules and Segmented Optimization Strategy for Efficient Thermoelectric Devices Validated by Mg3(Sb,Bi)2/Bi0.5Sb1.5Te3‐GeTe Module

Advanced Science, EarlyView.
By leveraging the materials' compatibility, optimized matching relationships are established to enhance the performance of segmented thermoelectric devices. To validate this approach, a segmented thermoelectric generator is fabricated incorporating n‐type Mg3(Sb,Bi)2 and p‐type Bi0.5Sb1.5Te3‐GeTe.
Kai‐Yu Yang, Xiaoyuan Li, Yuanxin Jiang, Liangliang Wang, Kai Guo, Lei Miao, Junliang Chen, Jiye Zhang, Lin Li, Yusong Du, Guang‐Hui Rao, Jun Luo, Jing‐Tai Zhao   +12 more
wiley   +1 more source

Regarding the application limitations of the Carnot, s theorem

Известия высших учебных заведений: Проблемы энергетики, 2019
The purpose of this article is to perform a comparative study of a reversible heat engine with an ideal or real gas as a working fluid and to determine the change in its efficiency depending on the thermodynamic characteristics of the working fluid.
V. G. Kiselev
doaj   +1 more source