Results 61 to 70 of about 402,826 (270)

Nanoparticle‐Mediated Bubble Suppression During Droplet Solidification for Mechanical Reinforcement

Advanced Science, EarlyView.
Nanoparticles mediate droplet solidification by raising nucleation temperature, refining dendrites, and slowing freezing‐front advance, thereby suppressing trapped air bubbles in droplet‐based 3D printing. This strategy reduces bubble volume fraction by ∼35% and increases compressive strength by up to 39%, offering a low‐cost route to stronger printed ...
Runmiao Gao, Xuan Zhang, Mengjie Song, Ronggui Yang, Keke Shao, Jun Shen, Long Zhang, Shuhuai Yao, Yubing Guo, Ruzhu Wang, Christopher Yu Hang Chao   +10 more
wiley   +1 more source

Review of Application and Research Situations on Refrigerant Injection Technology in Air Source Heat Pump

Zhileng xuebao, 2019
The principle and various system types for implementing refrigerant injection technology, such as the liquid injection cycle, subcooler vapor injection cycle, and flash tank vapor injection cycle, are introduced to optimize the performance of air source ...
Wang Chao, Zhao Lei, Li Yan, Yang Liu
doaj  

A Brilliant Magnetic Refrigerant Operating Near Liquid Helium Temperature: Enhanced Magnetocaloric Effect in Ferromagnetic EuTi0.75Al0.125Zr0.125O3

Advanced Electronic Materials
Rare earth‐based perovskites have become an attractive research interest in the field of cryogenic magnetic refrigerants due to their unique advantages in practical applications.
Huicai Xie, Jiaxin Jiang, Lu Tian, Zhaojun Mo, Guodong Liu, Xinqiang Gao, Jun Shen, Yao Liu   +7 more
doaj   +1 more source

Phase‐Dependent Oxygen Defect Energetics in Epitaxial NbN/AlN/NbN Films

Advanced Science, EarlyView.
Phase dependent oxygen defect energetics in epitaxial δ‐NbN/AlN/δ‐NbN and β‐Nb2N/AlN/β‐Nb2N trilayers. Atomic‐scale analysis and first‐principles calculations reveal distinct oxygen incorporation pathways across NbN polymorphs. Layer resolved defect formation energies show that O is energetically more favorable within δ‐NbN electrodes, whereas in β ...
Prachi Garg, Kedarsh Kaushik, Danqing Wang, Naomi Pieczulewski, Anand Ithepalli, John Wright, Debdeep Jena, David A. Muller, Hong X. Tang, Cyrus Dreyer, Baishakhi Mazumder   +10 more
wiley   +1 more source

Interpretation of the EU PFAS Restriction Proposal and Its Impact on R&AC Industry

Zhileng xuebao
Driven by the compliance of the Kigali Amendment to the Montreal Protocol on substances that deplete the Ozone Layer and the "carbon peak and carbon neutrality" strategy, refrigerant substitution has become one of the most important hot spots in the R&AC(
An Qingsong, Hou Jiaxin, Shi Lin, Dai Xiaoye   +3 more
doaj  

Tuning the Magnetic Phase Transitions in TbMn2‐xTixSi2 (x = 0–0.3)

Advanced Physics Research
Magnetocaloric materials receive considerable attention as promising candidates for next‐generation energy‐efficient and environmentally benign solid‐state refrigeration technologies.
E. M. H. Arif, Wayne D Hutchison, ChinWei Wang, Jianli Wang, Zhi Li, Zhenxiang Cheng   +5 more
doaj   +1 more source

Materials compatibility and lubricants research on CFC-refrigerant substitutes: Thermophysical properties [PDF]

, 1992
Numerous fluids have been identified as promising alternative refrigerants, but much of the information needed to predict their behavior as pure fluids and as components in mixtures does not exist. In particular, reliable thermophysical properties data and models are needed to predict the performance of the new refrigerants in heating and cooling ...
Kayser, R.F. (National Inst. of Standards, Technology, Gaithersburg, MD (United States). Thermophysics Div.)   +4 more
openaire   +2 more sources

Performance Estimation and Ex Vivo Validation of Untethered Magnetic Robots in Soft Tissue

Advanced Science, EarlyView.
This study presents an empirical model that quantitatively predicts the step‐out frequency of screw‐type untethered magnetic robots (UMRs) in soft viscoelastic environments, including ex vivo brain tissue. By integrating key parameters into a dimensionless framework, the model enables estimation of robot performance across a range of biological ...
Leendert‐Jan W. Ligtenberg, Thijs J. van der Burg, Stijn Y. Kolkman, Santiago Saavedra Castano, David Fernandez Rivas, Anke Klingner, Roger M. L. M. Lomme, Lucas S. Joziasse, Dorothee Wasserberg, H. Remco Liefers, Doron Ben Ami, Udi Sadeh, Oded Shoseyov, Giulio Dagnino, Pascal Jonkheijm, Jurgen J. Fütterer, Stefano Stramigioli, J. Frank W. Nijsen, Michiel C. Warlé, Islam S. M. Khalil   +19 more
wiley   +1 more source

Research and Application Status of Flammable Low CarbonRefrigerant Matching Flame Retardants

Zhileng xuebao
The current greenhouse effect and the "dual-carbon" goal set off a new wave of refrigerant substitution, requiring new refrigerants need to achieve a comprehensive balance between environmental protection, safety and thermal properties. However, there is
翟瑞, 黎芷均, 杨昭, 庄远, 叶斌, 唐景春, 赵红玲   +6 more
doaj  

Multi‐Scale Bionic Structure Constructs Biomass Flame‐Retardant Thermal Insulation Foam Material

Advanced Science, EarlyView.
Inspired by mussel adhesion and hierarchical brick‐and‐mortar architectures, a cellulose‐based biomimetic foam is constructed by anchoring bentonite nanosheets onto a polydopamine‐decorated cellulose nanofiber network. The resulting foam combines low thermal conductivity with intrinsic flame retardancy and full biodegradability, presenting a ...
Jianming Liao, Lijun Fan, Yunyuan Dong, Xuyu Bao, Xiaobin Chen, Qifu Zheng, Guanqing Zhang, Shen Wang, Wei Chen, Min Zhang, Shuaiming He   +10 more
wiley   +1 more source