Results 71 to 80 of about 1,497,477 (289)

Forward‐Biased Perovskite Photodiodes for In‐Sensor Optical Change Sensing

Advanced Functional Materials, EarlyView.
A forward‐biased perovskite photodiode is introduced as an in‐sensor analog preprocessing unit that uses current balancing between photocurrent and injection current to generate optical changes relative to programmable optical reference levels. The device directly converts reference‐relative optical changes into bipolar current signals, enabling sensor‐
Eungseon Yeon, Je‐Jun Lee, Somin Yun, Sangin Hahn, Chanhyeok Kim, Jinsoo Park, Jung Pyo Hong, Seong‐Jun Han, Jung Woo Kim, Jeong Hwan Lee, Subin Jeon, Youngmin Kim, Gunuk Wang, Hanul Min, Do Kyung Hwang   +14 more
wiley   +1 more source

Techno-economics of solar re-powering and retro-fitting an existing district heating network

Energy Conversion and Management: X
Most of the district heating systems today use higher operating temperatures than those in new-built systems, possibly limiting compatibility with solar energy.
Martin Andersen, Chris Bales, Jan-Olof Dalenbäck   +2 more
doaj   +1 more source

Charge‐Polarized Ni─S4 Single‐Atom Sites Drive Selective Photoreforming of Poly(lactic acid) to Lactate and Hydrogen

Advanced Functional Materials, EarlyView.
Atomically dispersed Ni–S4 sites on CdS nanorods induce interfacial charge polarization, directing photogenerated electrons to H2 evolution and holes to selective ester‐bond cleavage of poly(lactic acid). Without sacrificial reagents, this charge‐coupled system produces lactate while suppressing overoxidation, achieving an H2 evolution rate of 41.74 ...
Yu Yao, Panpan Zhang, Jinqiang Zhang, Xi‐lin Wu, Tara Pukala, Yifei Wang, Bernt Johannessen, Shaobin Wang, Xiaoguang Duan   +8 more
wiley   +1 more source

A Systematisation of Methods for Heat Integration of Solar Thermal Energy in Production Processes: A Review

Journal of Sustainable Development of Energy, Water and Environment Systems, 2020
The widespread use of fossil fuels and their limitation leads to find other sources of energy. Solar thermal energy is a possible solution. There are many projects that use renewable energy. Solar thermal energy can be easily used for heating.
Aleksandar Anastasovski, Predrag Rašković, Zvonimir Guzović, Almir Sedic   +3 more
doaj   +1 more source

HYBRID SOLAR HEAT PUMP SYSTEM FOR WATER HEATING [PDF]

Engenharia Agrícola, 2019
A comparative test of water heating between the hybrid system - solar collector with heat pump - and a system with conventional supplementary heating - with high electric power - was performed.
Rodrigo A. Jordan, Johnny T. Yamasaki, Vivaldo Silveira Júnior, Eduardo C. B. Dória   +3 more
doaj   +1 more source

Sacrificial‐Layer‐Assisted Heat‐Affected‐Zone Suppression in Laser Patterning of PET for High‐Performance Flexible Devices

Advanced Functional Materials, EarlyView.
A removable sacrificial polymer layer engineers the thermal boundary condition during nanosecond laser ablation of PET, suppressing heat‐affected‐zone formation without relying on costly ultrafast lasers. This strategy enables deep, high‐aspect‐ratio trenches with no detectable heat‐affected zone, templating silver‐filled mesh electrodes with record ...
Mehdi Zarei, Mirza Sahaluddin, Mostafa Bedewy, Paul W. Leu   +3 more
wiley   +1 more source

Current sheets in the solar corona : formation, fragmentation and heating [PDF]

, 2011
In this thesis we investigate current sheets in the solar corona. The well known 1D model for the tearing mode instability is presented, before progressing to 2D where we introduce a non-uniform resistivity.
Bowness, Ruth
core   +2 more sources

Photoinduced Interfacial Electronic Modulation in Fe2O3‐BiVO4 Heterostructures for Enhanced Photo‐Assisted Zn‐Air Batteries

Advanced Functional Materials, EarlyView.
Light irradiation activates the Fe2O3‐BiVO4 heterostructure, enabling efficient solar‐electrochemical coupling in zinc‐air batteries. The built‐in electric field drives directional charge separation, guiding photoelectrons toward oxygen reduction sites and accumulating holes for oxygen evolution, thereby reducing polarization and enhancing discharge ...
Yili Liu, Zhenjiang Du, Enming Liu, Hongzhou Dong, Jianguang Feng, Beili Pang, Lifeng Dong, Liyan Yu   +7 more
wiley   +1 more source

SOLAR THERMAL SYSTEMS: CURRENT SITUATION AND AMBITIOUS GOALS

Nonconventional Technologies Review, 2020
Solar thermal energy is a straightforward application of renewable energy. The unique advantage of solar heating and cooling technologies is that they are compatible with nearly all sources of back-up heat and almost universally applicable due to their ...
Nikolaos Taousanidis, Konstantinos Gavros, Andreas Taousanidis   +2 more
doaj  

An Experimental Study of the Solar Collection Performance of Liquid-Type Solar Collectors under Various Weather Conditions

Energies, 2018
To design and use a solar heating system properly, it is very important to evaluate the performance of its solar collector. Because the solar collection efficiency of a solar collector depends on the amount of solar radiation, the conditions of the ...
Youngjin Choi
doaj   +1 more source