Results 41 to 50 of about 1,485 (240)

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Embedded Ferroelectric Nanoclusters Can Drive Polarization Reversal in a Non‐Ferroelectric Polar Film via the Proximity Effect

Advanced Functional Materials, EarlyView.
Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska, Eugene A. Eliseev, Sergei V. Kalinin, Long‐Qing Chen, Dean R. Evans, Venkatraman Gopalan   +5 more
wiley   +1 more source

Variational Destriping in Remote Sensing Imagery: Total Variation with L1 Fidelity

Remote Sensing, 2018
This paper introduces a variational method for destriping data acquired by pushbroom-type satellite imaging systems. The model leverages sparsity in signals and is based on current research in sparse optimization and compressed sensing.
Igor Yanovsky, Konstantin Dragomiretskiy
doaj   +1 more source

An Edible Chitosan‐Based Acoustic Sensor for Sound‐Responsive Actuation in Edible Robots

Advanced Functional Materials, EarlyView.
This study introduces an edible acoustic sensor for robotic food and edible robotics. Built from a chitosan piezoelectric film between gold electrodes, the sensor enables acoustic communication through ON/OFF keying. Integrated into an edible robot with pneumatically actuated arms and neck, it responds to high‐frequency tones.
Valerio Francesco Annese, Bokeon Kwak, Gaia de Marzo, Giulia Coco, Valentina Antonaci, Leonardo Lamanna, Massimo De Vittorio, Dario Floreano, Mario Caironi   +8 more
wiley   +1 more source

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

Advanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen, Patryk Wąsik, Juan Fernando Cucuyame Morales, Marie Kate Palau, Adrian Francisco Duran Ornelas, Phani Saketh Dasika, Jin Hee Kim, Radhika Laxminarayana, Eric Hintsala, Greta Chang, Junzhi Liao, Lizhi Sun, Nathan Lord, Atsushi Arakaki, Paul Bardunias, Pablo Zavattieri, David Kisailus   +16 more
wiley   +1 more source

FastTWD: A MATLAB package for matrix-free CPU/GPU tensor wheel decomposition

SoftwareX
Tensor wheel (TW) decomposition is an emerging tensor-network format for compact representation of multidimensional data. Owing to its wheel topology, TW connects several important tensor formats, including CP, Tucker, tensor-train, and tensor-ring ...
Rafał Zdunek
doaj   +1 more source

An alternate minimization method beyond positive definite proximal regularization: convergence and complexity [PDF]

Journal of Nonlinear and Variational Analysis, 2019
Summary: In this paper, an alternate minimization method beyond positive definite proximal regularization is introduced for solving linearly constrained separable convex optimization problems. The proposed method can be interpreted as the prediction-correction method from the perspective of variational inequalities.
Wang, Xianfu, Ou, Xiaoqing, Zhang, Tao, Chen, Jiawei   +3 more
openaire   +1 more source

Ground‐State Charge‐Transfer Doping in Donor–Acceptor Semiconducting Polymers

Advanced Functional Materials, EarlyView.
This work demonstrates controlled ground‐state charge‐transfer complex formation (GS‐CTC) and doping in a series of diketopyrrolopyrrole‐based donor–acceptor semiconducting polymers paired with a π‐conjugated penta‐t‐butylpentacyanopentabenzo[25]annulene “cyanostar” macrocycle. Complementary experimental techniques show how subtle molecular, electronic,
Tanner L. Smith, Akshay N. Shah, Tanya A. Balandin, Michel De Keersmaecker, Paramasivam Mahalingam, Debapriya Gupta, Siqi Yu, Eui Hyun Suh, Pushkar Dalal, Erin L. Ratcliff, Scott P. O. Danielsen, Tse Nga Ng, Amar H. Flood, Jason D. Azoulay   +13 more
wiley   +1 more source

A partial inexact proximal point method for separable convex programming

四川大学学报. 自然科学版, 2019
In this paper, a new method is proposed for solving a class of separable convex programming problem. The method is referred to as the partial inexact proximal point method.
CHEN Xiao-Biao, LI Geng-Hua, ZHANG Mei-Yu   +2 more
doaj  

CompoHyDen: Hyperspectral Image Restoration via Nonconvex Componentwise Minimization

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
In this article, we propose a variational approach for estimating the clean hyperspectral images (HSI) that are corrupted by the combined effect of Gaussian noise, impulse noise, stripes, and deadlines.
Hazique Aetesam, Abdul Wasi, Sonal Sharma   +2 more
doaj   +1 more source