Results 41 to 50 of about 272,443 (187)

On strongly preirresolute topological vector spaces

, 2013
In the paper we obtain several characteristics of pre-$T_2$ of strongly preirresolute topological vector spaces and show that the extreme point of a convex subset of a strongly preirresolute topological vector space $X$ lies on the boundary.
N. Rajesh, V. Vijayabharathi
semanticscholar   +1 more source

Orbital Topology of Chiral Crystals for Orbitronics

Advanced Materials, EarlyView.
Chirality is ubiquitous in nature and constitutional for life. In chiral materials the intrinsic handedness, defined by their crystal structure, becomes a main driver for a novel electronic topology that is based on the orbital angular momentum rather than the electron spin.
Kenta Hagiwara, Ying‐Jiun Chen, Dongwook Go, Xin Liang Tan, Sergii Grytsiuk, Kui‐Hon Ou Yang, Guo‐Jiun Shu, Jing Chien, Yi‐Hsin Shen, Xiang‐Lin Huang, Iulia Cojocariu, Vitaliy Feyer, Minn‐Tsong Lin, Stefan Blügel, Claus Michael Schneider, Yuriy Mokrousov, Christian Tusche   +16 more
wiley   +1 more source

Acoustic Moiré Flat Bands in Twisted Heterobilayer Metasurface

Advanced Materials, EarlyView.
This research proposes a heterobilayer moiré acoustic metasurface using two distinct lattice structures. The heterobilayer design contributes to divergent dispersion curves for the upper and lower layers and allows for greater flexibility in tuning their hybridization through interlayer twisting.
Shida Fan, Chenglin Han, Kuan He, Liang Bai, Li‐Qun Chen, Huaitao Shi, Chen Shen, Tianzhi Yang   +7 more
wiley   +1 more source

Bounded operators on topological vector spaces and their spectral radii

, 2012
In this paper, we consider three classes of bounded linear operators on a topological vector space with respect to three different topologies which are introduced by Troitsky.
S. Hejazian, M. Mirzavaziri, O. Zabeti
semanticscholar   +1 more source

Approximately convex functions on topological vector spaces

Publicationes mathematicae (Debrecen), 2010
Let X be a real topological vector space, let D be a subset of X and let ® : X ! [0;1) be an even function locally bounded at zero. A function f : D ! R is called (®; t)-preconvex (where t 2 (0; 1) is ¯xed), if f(tx + (1 i t)y) · tf (x) + (1 i t)f(y) + ®(
J. Tabor, J. Tabor, Marek Zoldak
semanticscholar   +1 more source

Anomalous Phonon Softening with Inherent Strain in Wrinkled Monolayer WSe2

Advanced Materials, EarlyView.
This study introduces the first discovery of a new local strain indicator, A2′′(Γ)$A_2^{^{\prime\prime}}( \Gamma )$ mode, for monolayer WSe2‐based excitonic applications including single photon emitter by using tip‐enhanced Raman spectroscopy. The correlative investigation with density functional perturbation theory provides the origin of the anomalous
Dong Hyeon Kim, Jaekak Yoo, Hyeong Chan Suh, Yo Seob Won, Sung Hyuk Kim, Dong‐Joon Yi, Byeong Geun Jeong, Chanwoo Lee, Dongki Lee, Ki Kang Kim, Seung Mi Lee, Eui Kwan Koh, Mun Seok Jeong   +12 more
wiley   +1 more source

Challenges and Opportunities of Upconversion Nanoparticles for Emerging NIR Optoelectronic Devices

Advanced Materials, EarlyView.
The special photo‐responsiveness of upconversion nanoparticles has opened up a new path for the advancement of near‐infrared (NIR)‐responsive optoelectronics. However, challenges such as low energy‐conversion efficiency and high nonradiative losses still persist.
Sunyingyue Geng, Hangfei Li, Ziyu Lv, Yongbiao Zhai, Bobo Tian, Ying Luo, Ye Zhou, Su‐Ting Han   +7 more
wiley   +1 more source

Materials Advances in Devices for Heart Disease Interventions

Advanced Materials, EarlyView.
This review examines the crucial role of materials in heart disease interventions, focusing on strategies for monitoring, managing, and repairing heart conditions. It discusses the material requirements for medical devices, highlighting recent innovations and their impact on cardiovascular health.
Gagan K. Jalandhra, Lauryn Srethbhakdi, James Davies, Chi Cong Nguyen, Phuoc Thien Phan, Zachary Och, Aditya Ashok, Khoon S. Lim, Hoang‐Phuong Phan, Thanh Nho Do, Nigel H. Lovell, Jelena Rnjak‐Kovacina   +11 more
wiley   +1 more source

Mechanical Resonant Sensing of Spin Texture Dynamics in a 2D Antiferromagnet

Advanced Materials, EarlyView.
Detection of antiferromagnetic spin texture in a 2D magnetic crystal is achieved through nanomechanical resonators at radio frequencies. Sharp magnetic transitions that lead to abrupt changes in mechanical linear and nonlinear responses are assigned to antiferromagnetic domain motions.
S M Enamul Hoque Yousuf, Yunong Wang, Shreyas Ramachandran, John Koptur‐Palenchar, Chiara Tarantini, Li Xiang, Stephen McGill, Dmitry Smirnov, Elton J. G. Santos, Philip X.‐L. Feng, Xiao‐Xiao Zhang   +10 more
wiley   +1 more source

Topology in Biological Piezoelectric Materials

Advanced Materials, EarlyView.
This review summarizes the topological structures in biological piezoelectric materials, covering morphology evolution, spatial arrangement, and biomimetic strategies. These topologies modulate structure‐property relationships across multiple scales, enabling performance enhancement and multifunctional integration.
Chen Chen, Yanhu Zhang, Yi Zheng, Yi Zhang, Hongyi Liu, Jiang Wu, Liang Yang, Zhengbao Yang   +7 more
wiley   +1 more source