Results 51 to 60 of about 11,046,071 (291)

Tailoring Light Management in All‐Perovskite Tandem Solar Cells: The Impact of Nanotextures

Advanced Functional Materials, EarlyView.
To further improve the power conversion efficiency of all‐perovskite tandem solar cells, light management strategies need to be implemented. Front‐sided nanotextures reduce reflection losses, which boosts light absorption, thus increasing the tandem JSC, which is further supported by reducing parasitic absorption.
Sebastian Berwig, Yeonghun Yun, Doyun Im, Isabella Taupitz, Alexandros Cruz, Marlene Härtel, Bor Li, Kevin J. Prince, Hanifah Winarto, Thomas W. Gries, Klaus Jäger, Florian Riesebeck, Daniele Mantione, Sharon Monaci, Silvia Mariotti, Vishnu Vijayakumar, René A. J. Janssen, Sangwook Lee, Bernd Stannowski, Christiane Becker, Philipp Tockhorn, Steve Albrecht   +21 more
wiley   +1 more source

Acetoacetates Derived From Vegetable Oils: A Platform for Tailor‐Made Vinylogous Urethane Foams

Advanced Functional Materials, EarlyView.
A renewable vegetable oil is converted into acetoacetate‐functionalized precursors for the preparation of catalyst‐free vinylogous urethane foams. Room‐temperature foaming with n‐pentane generates lightweight cellular materials, while the choice of amine enables control over foam structure and mechanical properties.
Krzysztof Polaczek, Priscilla de Souza Lima, Olga Gotkiewicz, Ondrej Kopilec, Radka Hobzova, Lívia Kanizsová, Mikelis Kirpluks, Ondrej Sedlacek, Hynek Beneš   +8 more
wiley   +1 more source

Nonexistence of positive global solutions for singular differential inequalities on exterior domains of the Heisenberg group

Electronic Journal of Qualitative Theory of Differential Equations
This paper investigates the nonexistence and existence of global weak solutions to semilinear differential inequalities in the exterior domain of the unit ball within the Heisenberg group $\mathbb{H}^N$.
Mongi Blel
doaj   +1 more source

Blowing-up solutions for the Yamabe equation

Portugaliae Mathematica, 2014
Let (M,g) be a smooth, compact Riemannian manifold of dimension N\ge3 . We consider the almost critical problem
P. Esposito, PISTOIA, Angela
openaire   +2 more sources

On Blow-up Sets for the Parabolic Equation dt ∂tβ(u) = ⊿u+f(u) in a Ball [PDF]

, 1991
Radially symmetric solutions of nonlinear degenerate parabolic equations are considered in a ball, under some blow-up conditions on β(ξ), f(ξ) and the initial date.
MOCHIZUKI, Kiyoshi, SUZUKI, Ryuichi, IMAI, Takashi   +2 more
core  

Monolithic 3D‐Integrated All‐Solid Ion‐Gated Carbon Nanotube Transistors With Tunable Ionic Conductance for Multi‐Timescale Reservoir Computing

Advanced Materials, EarlyView.
A dual‐timescale reservoir based on monolithically 3D (M3D)‐integrated CNT solid ion‐gated transistors is demonstrated. Tunable ionic dynamics and pulse‐engineered operation enable linear and symmetric synaptic updates. The M3D‐integrated array achieves robust temporal encoding and accurate classification of moving MNIST sequences, highlighting its ...
Haksoon Jung, Hanbin Cho, Yongwoo Lee, Seunghun Baek, Hyeongjun Kim, Yun Goo Ro, Hyunhyub Ko, Joonki Suh, Yong‐Young Noh, Jimin Kwon   +9 more
wiley   +1 more source

A Geometrically Transient Platform for Bioelectronic Implants

Advanced Materials, EarlyView.
Minimally invasive bioelectronic implants often compromise performance for smaller sizes. To resolve this optimization dilemma, a wireless bioelectronic implant with a transient geometry is introduced (MiFi). The origami‐inspired device miniaturizes up to sixfold for syringe insertion and autonomously unfolds post‐implantation.
Selin Olenik, John D. Goodwin, Atharv Naik, Philip Coatsworth, Ioi Chit Cheung, Farbod Amirghasemi, Anies Sohi, Ehsan Abedi, Tayeb Tadlaoui, Maral P. S. Mousavi, Andriy S. Kozlov, Victoria Salem, Andrew S. Cowburn, Firat Guder   +13 more
wiley   +1 more source

Existence, decay and blow up of solutions for the extensible beam equation with nonlinear damping and source terms

Open Mathematics, 2015
We consider the existence, both locally and globally in time, the decay and the blow up of the solution for the extensible beam equation with nonlinear damping and source terms.
Pişkin Erhan
doaj   +1 more source

Beyond Nanoporosity: A CO2‐Conditioned Glassy Matrix Contributes to the Brittle‐to‐Ductile Transition of Nanocellular Polyetherimide

Advanced Materials, EarlyView.
The mechanical performance of nanocellular polyetherimide cannot be explained by nanoporosity alone. It is shown that CO2 saturation and desorption leave a distinct mechanical signature in the glassy matrix before foaming. This matrix contribution provides a new route to understand and optimize the brittle to ductile transition in nanocellular polymers.
Félix Lizalde‐Arroyo, Frederik Van Loock, Victoria Bernardo, Tuuli Peltola, René Bes, Alberto Tena, Miguel Ángel Rodríguez‐Pérez, Judith Martín‐de León   +7 more
wiley   +1 more source

A solution to the blow-up problem in adaptive controllers [PDF]

Modeling, Identification and Control, 1985
This paper addresses the blow-up problem associated with the parameter estimation part of an adaptive controller. A partial solution to the problem has been devised by the introduction of a variable forgetting factor. However, this does not eliminate the
Steinar Sælid, Olav Egeland, Bjarne A. Foss   +2 more
doaj   +1 more source