Results 121 to 130 of about 1,138,205 (234)

Wavelength-selective thermal nonreciprocity barely improves sky radiative cooling

Fundamental Research
Sky radiative cooling has showcased great potential for passive refrigeration without extra energy consumption, while its cooling power and efficiency are confined by Kirchhoff's law, that is, the emissivity is equal to the absorptivity.
Zihe Chen, Shilv Yu, Jinlong Ma, Bin Xie, Sun-Kyung Kim, Run Hu   +5 more
doaj   +1 more source

Non‐Line‐of‐Sight Passive Ammonia Sensor Loaded With MXene/In2O3 Composites for Agricultural Products Quality Deterioration Detection

Advanced Science, EarlyView.
This study presents a flexible, battery‐free passive RFID sensing platform for NLoS monitoring of quality deterioration in fresh agricultural products. It utilizes a structurally decoupled spiral antenna‐LC electrode architecture to suppress electromagnetic interference caused by packaging.
Guoping Hu, Lin He, Fanli Meng, Daming Dong, Guolong Shi   +4 more
wiley   +1 more source

Zeolitic Imidazolate Framework ‐8‐Based Passive Daytime Radiative Cooling Paint for Energy‐Efficient Cooling

Advanced Energy & Sustainability Research
Increased energy consumption, driven by climate change and the rise of new industries, has spurred a demand for alternative cooling technologies to replace energy‐intensive systems and mitigate environmental pollution.
Hangyu Lim, Jaein Park, Dongwoo Chae, Seongwoo Park, Sooyoung Kim, Heon Lee   +5 more
doaj   +1 more source

A numerical study of daytime passive radiative coolers for space cooling in buildings

, 2018
A passive daytime radiative cooler is made of a sky facing surface which can preserve the indoor air temperature below ambient without energy consumption by simultaneously reflecting solar radiation and emitting thermal radiation to the universe through ...
Jeong, Shin Young, Chao, Christopher Y.H., Tso, Chi Yan, Zouagui, Mehdi, Wong, Yuk Ming   +4 more
core   +1 more source

Adaptive and Highly Efficient Thermoregulation Based on Multi‐Dimensional Janus Film

Advanced Science, EarlyView.
A switchable TiO2/MXene/PDMS Janus membrane enables dual‐mode radiative cooling and solar heating, achieving sub‐ambient cooling of 17.89°C and above‐ambient heating of 13.82°C. Adaptive temperature regulation was demonstrated with a low power integrated autonomous smart curtain system, providing a sustainable and energy‐efficient alternative for ...
Yuqing Shi, Yuting Fu, Xiong Yu, Yuao Guo, Yanjun Liu, Dan Luo, Yuanjing Lin   +6 more
wiley   +1 more source

Passive isothermal film with self-switchable radiative cooling-driven water sorption layer for arid climate applications

Nature Communications
Reducing substantial energy demand of active heating, ventilation, and air conditioning in arid climates is of paramount importance. Here, we develop a millimeter-scale passive isothermal film that maintains temperature near 25 °C without relying on ...
Seonggon Kim, Sunghun Lee, Jehyung Lee, Hyung Won Choi, Wonjoon Choi, Yong Tae Kang   +5 more
doaj   +1 more source

Turning Discarded Oyster Shells into Sustainable Passive Radiative Cooling Films

Inorganic materials used in passive radiative cooling have achieved a commendable level of performance through synthesis, yet they lack sustainability and environmental friendliness as they do not incorporate recycling.
Dae Kyom Kim, Jeong Gyu Park, Junghwan Lee, Youngjae Yoo, Jeehoon Yu, Daeyul Kwon   +5 more
core   +1 more source

High‐Temperature Persistent Luminescence and Anti‐Thermal Quenching in LiGa5O8 by Trap Engineering

Advanced Science, EarlyView.
Cu/Zn co‐doping creates deep and thermally stable traps in LiGa5O8, enabling enhanced high‐temperature persistent luminescence, anti‐thermal‐quenching emission, and dynamic blue‐to‐red color evolution. ABSTRACT High‐temperature luminescent materials are essential for applications in displays, information storage, anti‐counterfeiting, and extreme ...
Yuchen Wang, Yilong Fan, Jianhua Liu, Jin Zhang, Dingling Xiong, Tengxiang Long, Lina Su, Chao Sun, Hao Song, Pengpeng Dai, Jingui Duan, Ling Huang   +11 more
wiley   +1 more source

Thermal emitters with tailored photonic structures for passive radiative cooling

, 2021
Over the past few years, the great efforts on passive radiative cooling have been conducted to design and implement the efficient cooling devices as a promising solution of global energy depletion crisis.
Gil Ju Lee
core  

From Flow to Function: Using Different Static Mixers to Fabricate Microarchitected Materials Via Chaotic Printing

Advanced Science, EarlyView.
Complex microarchitectures emerge from simple flow‐driven transformations as static mixers iteratively reorient and split material domains. Coupled with diverse deposition strategies, chaotic printing provides an accessible platform for fabricating architected materials that support biologically and chemically relevant processes. ABSTRACT Nature builds
Edna Johana Bolívar‐Monsalve, Carlos Fernando Ceballos‐González, Diego Alonso Quevedo‐Moreno, Irving Isaí Rendón‐Moreno, Ariel Cantoral‐Sánchez, Héctor Ambriz‐González, Mario Moisés Alvarez, Grissel Trujillo‐de Santiago   +7 more
wiley   +1 more source