Results 41 to 50 of about 13,806 (267)

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Piecewise linear differential systems with an algebraic line of separation

Electronic Journal of Differential Equations, 2020
We study the number of limit cycles of planar piecewise linear differential systems separated by a branch of an algebraic curve. We show that for each $n\in\mathbb{N}$ there exist piecewise linear differential systems separated by an algebraic curve ...
Armengol Gasull, Joan Torregrosa, Xiang Zhang   +2 more
doaj  

On strong hyperbolicity for first order systems

Proceedings of the Japan Academy, Series A, Mathematical Sciences, 1985
The author studies the strong hyperbolicity for first order hyperbolic systems \[ L(x,D)=-D_ 0+\sum^{d}_{j=1}A_ j(x)D_ j+B(x) \] where \(A_ j(x)\), B(x) are \(N\times N\) matrices with smooth entries defined near the origin in \(R^{d+1}\) with coordinates \(x=(x_ 0,x^ 1)=(x_ 0,x_ 1,...,x_ d)\) and \(D_ j=-i(\partial /\partial x_ j)\).
openaire   +2 more sources

Controlled Movement of Soft Actuators using Multi‐Responsive Microgel Arrays and Microcirculatory Systems

Advanced Functional Materials, EarlyView.
Microscale hydrogels (microgels) feature improved mass transport characteristics supportive of fast actuation and chemical tunability amenable to programmed stimuli response. A unique soft actuator architecture is realized by encapsulating microgels in soft microcirculatory systems which enable the convenient delivery of liquid stimuli for powering and
Nengjian Huang, Brennan P. Watts, Stephen A. Morin   +2 more
wiley   +1 more source

Canonicability of the first order system of hyperbolic equations [PDF]

Journal of Integral Equations and Applications, 2015
The paper establishes a condition for the first order hyperbolic system (with a boundary condition at infinity) to have a solution that can be expressed by the second kind Volterra operator. On the basis of this condition, some canonical forms (for instance Dirac-type system) of the first order hyperbolic system can be sorted.
Ismailov, Mansur I., Tekin, Ibrahim
openaire   +2 more sources

Spatially Tailorable Liquid Crystalline Elastomer Alignment During Digital Light Process 3D Printing

Advanced Functional Materials, EarlyView.
Here, we report the fabrication of 3D printable liquid crystalline elastomer (LCE) structures with spatially tailorable alignment domains within the same layer. This work addresses the long‐standing challenge of preparing complex 3D LCE architectures with patterned functional domains to achieve nonlinear deformations. Fabrication of multi‐domains in 3D
Adam Bischoff, Saman Jamshididana, Zach Miller, Kassandra Hernandez, Nicolas Gonsalves, Andre Olarra, Elliot Yoo, Jeremy A. Herman, Devin J. Roach   +8 more
wiley   +1 more source

Extended-State-Observer-Based Chattering Free Sliding Mode Control for Nonlinear Systems With Mismatched Disturbance

IEEE Access, 2018
This paper presents a novel chattering free sliding mode control method for a class of nonlinear systems in the presence of matched disturbance and mismatched disturbance based on an extended state observer.
Sheng-Li Shi, Jian-Xiong Li, Yi-Ming Fang   +2 more
doaj   +1 more source

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

Advanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan, Wentao Wang, Xiu Liang, Yongliang Zhang, Jie Liu, Yu Bai, Dangyuan Lei   +6 more
wiley   +1 more source

ISAR Imaging Based on the Wideband Hyperbolic Frequency-ModulationWaveform

Sensors, 2015
The hyperbolic frequency-modulated (HFM) waveform has an inherent Doppler-invariant property. It is more conducive than the conventional linear frequency-modulated (LFM) waveform to high speed moving target imaging.
Wei Zhou, Chun-mao Yeh, Kan Jin, Jian Yang, Yao-bin Lu   +4 more
doaj   +1 more source

Hyperbolic to Parabolic Relaxation Theory for Quasilinear First Order Systems

Journal of Differential Equations, 2000
This paper is concerned with a quasilinear first-order system with a source term, and investigates the relaxation phenomena where the relaxed equilibria are described by means of an equation (or a system) of parabolic type. In particular a one-dimensional \(2\times 2\) system of genuinely nonlinear hyperbolic balance laws with a strong dissipative ...
MARCATI, PIERANGELO, RUBINO, BRUNO
openaire   +2 more sources