Results 51 to 60 of about 307,407 (286)

Charge generation in organic solar cells: Journey toward 20% power conversion efficiency

Aggregate, Volume 3, Issue 6, December 2022., 2022
Herein, a photophysicist's views on charge generation in organic solar cells is discussed. Recent steady‐state and time‐resolved spectroscopic studies regarding the exciton diffusion to donor:acceptor interfaces, charge transfer at the donor:acceptor interface, and long‐range spatial dissociation of charge transfer states are highlighted.
Yasunari Tamai
wiley   +1 more source

High Thermoelectric Performance in Low‐Cost Cu8SiSxSe6‐x Argyrodite

Advanced Functional Materials, EarlyView.
This study discovers the great potential of Cu8SiSxSe6‐x argyrodites as new, low‐cost, Te‐free thermoelectric materials. The proposed defect scheme suppresses the phase transition, enhances the weighted mobility and optimizes the grain boundary contacts.
Taras Parashchuk, Oleksandr Cherniushok, Bartlomiej Wiendlocha, Janusz Tobola, Raúl Cardoso‐Gil, G. Jeffrey Snyder, Yuri Grin, Krzysztof T. Wojciechowski   +7 more
wiley   +1 more source

Drop breakage in a single‐pass through vortex‐based cavitation device: Experiments and modeling

AIChE Journal, Volume 69, Issue 1, January 2023., 2023
Abstract Liquid–liquid emulsions are used in many sectors such as personal care, home care, and food products. There is an increasing need for developing compact and modular devices for producing emulsions with desired droplet size distribution (DSD). In this work, we have experimentally and computationally investigated an application of vortex‐based ...
Abhijeet H. Thaker, Vivek V. Ranade
wiley   +1 more source

Carleman estimate and null controllability of a cascade degenerate parabolic system with general convection terms

Electronic Journal of Differential Equations, 2018
This article shows Carleman estimate and null controllability of a cascade control system governed by the semilinear degenerate parabolic equations with the general convection terms.
Jianing Xu, Chunpeng Wang, Yuanyuan Nie
doaj  

Supercompliant Lattice Boosts n‐type AgSbTe2 Thermoelectrics

Advanced Functional Materials, EarlyView.
The supercompliant lattice design enables the first realization of n‐type electrical transport in AgSbTe2 by overcoming intrinsic electron‐killer defects and exceeding the doping limits imposed by the conventional Hume–Rothery rule. Accordingly, the best performance n‐type Ag0.8Na0.3Sb0.6Bi0.4Te2 sample achieves a low κ of 0.27 W·m−1·K−1 that ...
Ruoyan Li, Shuai Han, Chunyu Zhang, Suyao Liu, Wen Yin, Yuanguang Xia, Pengfei Liu, Zhen‐Hua Ge, Dongyao Zhao, Bingchao Yang, Lulu Huang, Zhi Zhang, Yongsheng Zhang, Yuan Yu, Bangzhi Ge, Chongjian Zhou   +15 more
wiley   +1 more source

Flow physics of planar bistable fluidic oscillator with backflow limbs

AIChE Journal, Volume 69, Issue 1, January 2023., 2023
Abstract Fluidic oscillators (FOs) are used in a variety of applications, including process control and process intensification. Despite the simple design and operation of FOs, the fluid dynamics of FOs exhibit rich complexities. The inherently unstable flow, jet oscillations, and resulting vortices influence mixing and other transport processes.
Ketan Madane, Chirag Khalde, Ajinkya Pandit, Vivek V. Ranade   +3 more
wiley   +1 more source

Null controllability of a coupled system of degenerate parabolic equations with lower order terms

Electronic Journal of Differential Equations, 2019
This article concerns the null controllability of a control system governed by coupled degenerate parabolic equations with lower order terms. For these equations, the convection terms cannot be controlled by the diffusion terms.
Jianing Xu, Qian Zhou, Yuanyuan Nie
doaj  

Motor‐Free Soft Robots for Cancer Detection, Surgery, and In Situ Bioprinting

Advanced Healthcare Materials, EarlyView.
Novel motor‐free soft robots for cancer detection, surgery, and in situ bioprinting–are presented. This master‐slave system is constructed from soft fibrous syringe architectures, removing the need for electrical motors and complex control mechanisms, while reducing the physical tremors.
Chi Cong Nguyen, James Davies, Aditya Ashok, Trung Thien Hoang, Anahid Ehteda, Tran Bach Dang, Emanuele Nicotra, Hien A. Tran, Bibhu Sharma, Kefan Zhu, Phuoc Thien Phan, Adrienne Ji, Jingjing Wan, Jelena Rnjak‐Kovacina, Orazio Vittorio, Hoang‐Phuong Phan, Nigel Hamilton Lovell, Thanh Nho Do   +17 more
wiley   +1 more source

Emerging Opportunities of Colloidal Quantum Dots for Photocatalytic Organic Transformations

Advanced Materials, EarlyView.
Colloidal quantum dots (QDs) have gained significant attention as photocatalysts in organic transformations in recent years. This review highlights QDs’ distinctive features, including the quantum size effect, compositional and structural diversity, tunable surface chemistry, and photophysics.
Qinxuan Cao, Jianning Feng, Kin Ting Chang, Wenfei Liang, Haipeng Lu   +4 more
wiley   +1 more source

Carleman Estimates and Controllability of Stochastic degenerate parabolic Heat Equations [PDF]

arXiv, 2022
This paper concerns the null controllability for a class of stochastic degenerate parabolic equations. We first establish a global Carleman estimate for a linear forward stochastic degenerate equation with multiplicative noise. Using this estimate we prove the null controllability of the backward equation and obtain a partial result for the ...
arxiv