Results 31 to 40 of about 1,116,436 (266)

Solar Photovoltaic Thermal Cells Performance Improvement using Jet, Phase Change Material and Nanoparticles Cooling Technology: A review [PDF]

Engineering and Technology Journal
The cooling of solar photovoltaic (PV) cells is reviewed in this study. The critical analysis aims to increase PV cell life span and electrical efficiency.
Mays Shaeli, Monier Baccar, Jalal Jalil
doaj   +1 more source

Si‐Doped Nanocrystalline Diamond as Highly Sensitive Luminescence Thermometer for the Physiological Temperature Range

Advanced Functional Materials, EarlyView.
In this work, diamonds with negative charged silicon‐vacancy (SiV−) centers have been designed for use as thermometers in biomedical applications. Multiparametric analysis of the emission characteristics of the SiV− centers provides extraordinary sensitivity for temperature detection in the physiological temperature range.
María Gragera, Iván Carrillo‐Berdugo, Josue Millán, Paulius Pobedinskas, Antonio Freire, Ken Haenen, Javier Navas   +6 more
wiley   +1 more source

Heat transfer characteristics of double-wall cooling configurations with self-organizing topology

Propulsion and Energy
As the temperature of gas turbines continues to rise, turbine cooling faces significant challenges. Facing significant flow and heat transfer non-uniformity issues in turbines, the ability of artificially defined topological structures to control ...
Sixian Zeng, Cheng Lu, Kaibin Hu, Shengquan Zhong, Li Yang   +4 more
doaj   +1 more source

Cooling Characteristic of a Wall Jet for Suppressing Crossflow Effect under Conjugate Heat Transfer Condition

Aerospace, 2022
The leading edge is the critical portion for a gas turbine blade and is often insufficiently cooled due to the adverse effect of Crossflow in the cooling chamber.
Qinghua Deng, Huihui Wang, Wei He, Zhenping Feng   +3 more
doaj   +1 more source

Air Jet Impingement Cooling of Electronic Devices Using Additively Manufactured Nozzles

IEEE Transactions on Components, Packaging, and Manufacturing Technology, 2020
This article reports the design, fabrication, and demonstration of additively manufactured air jet impingement coolers for the thermal management of high-power gallium nitride (GaN) transistors.
B. Kwon, T. Foulkes, Tianyu Yang, N. Miljkovic, W. King   +4 more
semanticscholar   +1 more source

Electrically Coded Retinomorphic Spectrophotodetector

Advanced Materials, EarlyView.
Self‐powered retinomorphic pyro‐photodetector is demonstrated that avoids machine‐learning post‐processing and covers 365–940 nm. Electrostatic balancing of built‐in potential produces an electrical wavelength code, delivering <3 nm wavelength decoding accuracy with ∼46 µs response.
Mohit Kumar, Hyunmin Dang, Hyungtak Seo
wiley   +1 more source

Direct Growth of 2D Bilayers on Au(111) for Low‐Coercive Sliding Ferroelectricity

Advanced Materials, EarlyView.
Controlled CVD growth of stacking‐defined bilayer ReS2 on Au(111) enables parallel‐stacked bilayers with intrinsic sliding ferroelectricity, a strong piezoelectric response, and an ultralow coercive voltage. Atomic‐resolution imaging and in situ measurements further reveal the decisive role of clean interfaces in achieving low‐barrier ferroelectric ...
Honglin Chen, Ke Yang, Yuhuan Li, Lingli Huang, Tianren Chen, Ming Yang, Jiong Zhao, Thuc Hue Ly   +7 more
wiley   +1 more source

Cooling Performance of Impingement–Effusion Double-Wall Configurations Under Atmospheric and Elevated Pressures

Applied Sciences
The combustor liner of the modern aero-engine operates under extreme thermal loads with limited coolant supply, necessarily making efficient cooling approaches important.
Rongxing Zhang, Wei Li, Jianbai Jiang, Xudong Lang, Jinxin Dai, Tianyou Lian, Xiaoxiang Shi, Wei Li   +7 more
doaj   +1 more source

High Quality MoS2 Layered Thin Films Obtained by Ionized Jet Deposition Investigated by X‐ray Absorption Spectroscopy at S L2,3 and Mo M2,3 Edges

Advanced Materials Interfaces, EarlyView.
Soft x‐ray absorption spectroscopy at the S L2,3 and Mo M2,3 edges reveals synthesis‐dependent electronic and structural order in MoS2. Bulk, exfoliated, and CVD samples show well‐resolved 2D features, while as‐deposited IJD films appear amorphous but crystallize into ordered 2H‐MoS2 upon moderate annealing, confirming IJD as a viable low‐temperature ...
Giulia Giovanelli, Alessandro Lodi, Angelo Giglia, Nicola Mahne, Rahul Kesarwani, Jana Vejpravova, Steffen Rühl, Giovanni Ligorio, Emil J. W. List‐Kratochvil, Lucia Nasi, Melanie Timpel, Marco V. Nardi, Luca Pasquali   +12 more
wiley   +1 more source

Effects of film hole spanwise angle and diameter on flow and heat transfer of impingement/effusion cooling with crossflow diverters

Case Studies in Thermal Engineering
This paper studies the blade cooling under the co-effect of external film extraction and internal impingement cooling with crossflow diverters. The influence of spanwise angle (α) and diameter (Df) of film hole on flow and cooling performance are ...
Juan He, Kun Xiao, Haolong Li, Qinghua Deng, Hao Peng   +4 more
doaj   +1 more source