Results 71 to 80 of about 3,011 (252)

Reversible Hydration Tuning of Polar Order and Large Nonlinear Optical Response in a 2D van der Waals Crystal, LiInP2S6

open access: yesAdvanced Materials, EarlyView.
Hydration‐induced symmetry breaking transforms layered LiInP2S6${\rm LiInP}_2{\rm S}_6$ from a nonpolar to a chiral‐polar phase, producing a giant enhancement of non‐resonant second‐harmonic generation. The reversible tuning of polar order through molecular intercalation establishes a strategy for dynamically controlling nonlinear optical ...
Jadupati Nag   +8 more
wiley   +1 more source

Weighted Hardy type inequalities with Robin boundary conditions

open access: yesDiscrete and Continuous Dynamical Systems - S
In this paper, we establish a general weighted Hardy type inequality for the $% p-$Laplace operator with Robin boundary condition. We provide various concrete examples to illustrate our results for different weights. Furthermore, we present some Heisenberg-Pauli-Weyl type inequalities with boundary terms on balls with radius $R$ at the origin in ...
Kömbe, İsmail, Yener, Abdullah
openaire   +3 more sources

De Novo Autogenic Engineered Living Functional Materials

open access: yesAdvanced Materials, EarlyView.
A versatile platform for de novo autogenic engineered living materials is presented, leveraging protein mining, computational modeling, and synthetic biology. By reprogramming the Escherichia coli curli machinery with β‐solenoid proteins from non‐model bacteria, macroscopic biomaterials with enhanced mechanical properties, UV‐C irradiation protection ...
Hoda M. Hammad   +9 more
wiley   +1 more source

Geometric Approximation of Point Interactions in Three-Dimensional Domains

open access: yesMathematics
In this paper, we study a three-dimensional second-order elliptic operator with a point interaction in an arbitrary domain. The operator is supposed to be self-adjoint.
Denis Ivanovich Borisov
doaj   +1 more source

On a reaction–diffusion equation with Robin and free boundary conditions

open access: yesJournal of Differential Equations, 2015
This paper is concerned with the following free boundary problem \[ \begin{cases} u_{t}=u_{xx}+f(u),00,\\ u(h(t),t)=0,h^{\prime }(t)=-u_{x}(h(t),t),\quad &t>0,\\ h(0)=h_{0},u(x,0)=\sigma \phi (x),\quad &0\leq x\leq h_{0}, \end{cases} \] where \(b\in [ 0,\infty ),\sigma \geq 0\), \(\phi \) is a \(C^{2}\) function with compact support, and \(f\in C^{1 ...
Liu, Xiaowei, Lou, Bendong
openaire   +1 more source

Sustainable Poly(Lactic Acid)/Graphene Oxide Bioelectronic Platform for Neurotransmitters Sensing and Tunable Stimulation of Astrocytes

open access: yesAdvanced Materials, EarlyView.
This work introduces sustainable PLA/graphene oxide bioelectronic interfaces featuring electrodes with tunable conductivity and strong electrocatalytic performance. These platforms were used to implement a new method for tuning astrocyte Ca2+ signaling and for the efficient detection of key biomarkers.
Alessandra Scidà   +15 more
wiley   +1 more source

The thermistor problem with Robin boundary condition

open access: yesRendiconti del Seminario Matematico della Università di Padova, 2016
We study the thermistor problem with Robin boundary condition for the temperature. A theorem of existence is proved using the compensated compactness method. For the one-dimensional case a result of non-existence and non-uniqueness is also given.
openaire   +1 more source

Electroactive 3D Porous Graphene Foam Impedimetric Biosensor for Ultrasensitive Detection of MCF‐7‐Cells‐Derived Extracellular Vesicles in Human Serum

open access: yesAdvanced Materials Technologies, EarlyView.
A label‐free impedimetric biosensor based on electroactive 3D porous graphene foam enables ultrasensitive and selective detection of CD81 protein and MCF‐7 cell‐derived extracellular vesicles in human serum. Detection limits of 0.048 fg/mL for CD81 and ∼24 EVs/mL are achieved, demonstrating a robust platform for selective, label‐free, and ...
Michael Robert Furness   +11 more
wiley   +1 more source

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