Results 141 to 150 of about 351,513 (382)

A Soft Microrobot for Single‐Cell Transport, Spheroid Assembly, and Dual‐Mode Drug Screening

Advanced Materials, EarlyView.
A soft, untethered hydrogel microrobot enables precise single‐cell delivery, self‐assembly into 3D spheroids, and real‐time thermal actuation. Driven by light‐induced convection and embedded with gold nanorods and temperature sensors, the microrobot guides cells, modulates local microenvironments, and supports drug testing.
Philipp Harder, Nergishan İyisan, Yukun Wang, Berna Özkale   +3 more
wiley   +1 more source

A stochastic HJB equation for optimal control of forward-backward SDEs

, 2016
We study optimal stochastic control problems of general coupled systems of forward-backward stochastic differential equations with jumps. By means of the It\^o-Ventzell formula the system is transformed to a controlled backward stochastic partial ...
Sulem, Agnès, Zhang, Tusheng, Øksendal, Bernt   +2 more
core   +1 more source

Dimensionally Resolved Nanostructures of an Atomically Precise and Optically Active 1D van der Waals Helix

Advanced Materials, EarlyView.
The ability to grow nanostructures based on inorganic helical crystals with long‐range order will enable a platform to realize physical states that arise from chirality. Herein, it is demonstrated that controlled vapor phase deposition of an atomically precise helical crystal, GaSI, into ultrathin 1D nanowires and quasi‐2D nanoribbons.
Kaitlyn G. Dold, Joni Spencer, Griffin M. Milligan, Sirisak Singsen, Zhe Wang, Marcus Marracci, Dmitri Leo Mesoza Cordova, Thanh N. Huynh, Kaleolani Ogura, Toshihiro Aoki, Xingxu Yan, Dmitry A. Fishman, Xiaoqing Pan, Ruqian Wu, Elizabeth M. Y. Lee, Maxx Q. Arguilla   +15 more
wiley   +1 more source

Proton Selective Nanoporous Atomically Thin Graphene Membranes for Vanadium Redox Flow Batteries

Advanced Materials, EarlyView.
A scalable high‐performance proton‐exchange‐membrane architecture is demonstrated that integrates monolayer CVD graphene with Ar plasma‐engineered Angstrom‐scale proton‐selective pores, stacked to mitigate non‐selective defects, and interfaced with an ultrathin (≈300 nm) polybenzimidazole layer sandwiched between two Nafion 211 sheets.
Pavan Chaturvedi, Peifu Cheng, Saban M. Hus, Matthew Coupin, An‐Ping Li, Jamie Warner, Michael S.H. Boutilier, Piran R. Kidambi   +7 more
wiley   +1 more source

On one-dimensional stochastic control problems: applications to investment models [PDF]

The paper provides a systematic way for finding a partial differential equation that characterize directly the optimal control, in the framework of one?dimensional stochastic control problems of Mayer, with no constraints on the controls.
Juan Pablo Rincón-Zapatero, Ricardo Josa-Fombellida   +1 more
core  

Spatiotemporal Reservoir Computing with a Reconfigurable Multifunctional Memristor Array

Advanced Materials, EarlyView.
This study presents a hardware physical reservoir computing system using a tri‐modal memristive crossbar array. Stochastic masking, bistable nonlinear activation, and analog readout enable fully in‐memory spatiotemporal processing. Demonstrations on cellular automata, Lorenz prediction, ADHD EEG classification, and chaotic KS modeling highlight its ...
Sungho Kim, Dong Hoon Shin, Wonho Choi, Sunwoo Cheong, Sung Keun Shim, Soo Hyung Lee, Janguk Han, Yoon Ho Jang, Kunhee Son, Néstor Ghenzi, Cheol Seong Hwang   +10 more
wiley   +1 more source

Tunable Magnetism and Intrinsic Exchange Bias in Al‐Substituted Terbium Iron Garnet

Advanced Materials, EarlyView.
Al substitution in terbium iron garnet thin films enables continuous tuning of the magnetic compensation temperature from 190 K to above room temperature. Near compensation, a giant intrinsic exchange bias emerges, whose sign and stochasticity can be controlled by external fields and cooling history. This approach provides new routes to engineer garnet
Takayuki Shiino, Matteo Fettizio, Saúl Estandía, Can Onur Avci   +3 more
wiley   +1 more source

Emergent Motility of Self‐Organized Particle‐Giant Unilamellar Vesicle Assembly

Advanced Materials, EarlyView.
Giant unilamellar vesicles (GUVs), when combined with silica particles under alternating electric fields, spontaneously self‐assemble into motile structures. Asymmetric particle decoration induces fluid flows that propel the assemblies, enabling persistent motion and reversible control.
Selcan Karaz, Gaurav Gardi, Mertcan Han, Saadet Fatma Baltaci, Mukrime Birgul Akolpoglu, Metin Sitti   +5 more
wiley   +1 more source

Existence of quadratic-mean almost periodic solutions to some stochastic hyperbolic differential equations

Electronic Journal of Differential Equations, 2009
In this paper we obtain the existence of quadratic-mean almost periodic solutions to some classes of partial hyperbolic stochastic differential equations.
Paul H. Bezandry, Toka Diagana
doaj  

Topological dimensions of random attractors for a stochastic reaction-diffusion equation with delay

Electronic Journal of Qualitative Theory of Differential Equations
The aim of this paper is to obtain an estimation of Hausdorff as well as fractal dimensions of random attractors for a stochastic reaction-diffusion equation with delay.
Wenjie Hu, Tomas Caraballo
doaj   +1 more source