Results 51 to 60 of about 2,153,662 (184)

Room‐Temperature Polariton Condensation Into Superscar Modes in Growth‐Defined Triangular Micro‐Prism Resonators

Laser &Photonics Reviews, EarlyView.
High‐Q superscar modes in growth‐defined triangular GaN micro‐prism resonators enable strong exciton–photon coupling and room‐temperature polariton condensation, offering a scalable platform for integrated III‐nitride polariton devices. ABSTRACT Group III‐nitride semiconductors are regarded as key materials for realizing polariton devices operating at ...
Chan‐Young Sung, Jungwon Kim, Daegwang Choi, Hyun Gyu Song, Yong‐Hoon Cho   +4 more
wiley   +1 more source

Mixed TiO2–SiO2 thin coatings for selective adsorption and sunlight‐powered photodegradation of cationic pollutants

Responsive Materials, EarlyView.
Environmental pollution and water scarcity demand innovative purification methods. This study presents a sol‐gel approach to fabricate mixed silica–titania thin films joining photocatalytic activity with selective sorption capability. The films exhibit higher surface area, enhanced degradation of cationic and improved performance over bare titania ...
Andrea Lanfranchi, Simone Bertucci, Margherita Peragallo, Fabiano Martorelli, Giovanni Manfredi, Davide Avanzino, Roberto Spotorno, Stefano Alberti, Davide Comoretto, Francesco Di Stasio, Maddalena Patrini, Federico Locardi, Mirko Prato, Paola Lova   +13 more
wiley   +1 more source

Dirichlet Problems with an Indefinite and Unbounded Potential and Concave-Convex Nonlinearities

Abstract and Applied Analysis, 2012
We consider a parametric semilinear Dirichlet problem with an unbounded and indefinite potential. In the reaction we have the competing effects of a sublinear (concave) term and of a superlinear (convex) term.
Leszek Gasiński, Nikolaos S. Papageorgiou   +1 more
doaj   +1 more source

Anomalous Sub‐Band Gap Emission at Room Temperature in Mixed‐Dimensional WS2/Cu2O Heterostructures

Small, EarlyView.
Monolayer WS2 on Cu2O produces a room‐temperature sub‐bandgap emission from the hybrid interface. Spectroscopy and electrical bias measurements indicate that this emission arises primarily from WS2‐modified Cu2O defect states rather than interlayer excitons.
Osamah Kharsah, Jonah von Kuczkowski, Ahmed Shahin, Rouaa Albalkhi, Aya Al‐Amwi, Ibrahim Titi, Yossarian Liebsch, Oliver Altenhoff, Ulrich Hagemann, Anke Hierzenberger, Kevin Musselman, Marika Schleberger   +11 more
wiley   +1 more source

Robin double-phase problems with singular and superlinear terms [PDF]

, 2020
We consider a nonlinear Robin problem driven by the sum of ▫$p$▫-Laplacian and ▫$q$▫-Laplacian (i.e. the ▫$p, q)$▫-equation). In the reaction there are competing effects of a singular term and a parametric perturbation ▫$lambda f(z,x)$▫, which is ...
Rǎdulescu, Vicenţiu, Papageorgiou, Nikolaos S., Repovš, Dušan   +2 more
core   +1 more source

Surface Locomotion of Cell‐Sized Microrobots Subject to Adhesive Heterogeneity

Small, EarlyView.
Chemically powered, cell‐sized microrobots exhibit translational, circular, or spiral motion through a balance among self‐phoretic propulsion, drag, gravity, and heterogeneous surface interactions. Experiments show that microrobot design and substrate conditions regulate both mobility and trajectory type.
Byung Ha Kang, Sungyun Yang, Hyeongho Min, Michael S. Strano   +3 more
wiley   +1 more source

Global well-posedness to stochastic reaction-diffusion equations on the real line R with superlinear drifts driven by multiplicative space-time white noise

Electronic Journal of Probability, 2023
Considérons l'équation de réaction-diffusion stochastique avec une non-linéarité logarithmique entraînée par le bruit blanc espace-temps : du(t,x)=1 2Δu (t,x)dt+b(u(t,x))dt+σ(u(t,x))W(dt,dx),t>0,x∈I,u(0,x)=u0(x),x∈I. Lorsque I est un intervalle compact, disons I=[0,1], le bien-fondé de l'équation ci-dessus a été établi dans [7] (Ann. Probab. 47:1, 2019)
Shang, Shijie, Zhang, Tusheng
openaire   +2 more sources

Risk, Utility and Sensitivity to Large Losses

Mathematical Finance, EarlyView.
ABSTRACT Risk and utility functionals are fundamental building blocks in economics and finance. In this paper we investigate under which conditions a risk or utility functional is sensitive to the accumulation of losses in the sense that any sufficiently large multiple of a position that exposes an agent to future losses has positive risk or negative ...
Martin Herdegen, Nazem Khan, Cosimo Munari   +2 more
wiley   +1 more source

Two solutions for Dirichlet double phase problems with variable exponents

Advanced Nonlinear Studies
This paper is devoted to the study of a double phase problem with variable exponents and Dirichlet boundary condition. Based on an abstract critical point theorem, we establish existence results under very general assumptions on the nonlinear term, such ...
Amoroso Eleonora, Bonanno Gabriele, D’Aguì Giuseppina, Winkert Patrick   +3 more
doaj   +1 more source

Contact‐Architecture‐Dependent Mixed Ionic‐Electronic Transport in Solution‐Grown MAPbBr3 Microwire Photodetectors

Advanced Optical Materials, Volume 14, Issue 40, 27 October 2026.
MAPbBr3 microwire photodetectors reveal a strong architecture dependence of mixed ionic–electronic phototransport. A single‐gap device exhibits pronounced illumination‐history‐dependent transients governed by trap‐assisted injection and ionic polarization, whereas a multi‐gap configuration averages local interfacial effects and yields stable ...
Sebastiano De Stefano, Nan Zhao, Ofelia Durante, Adolfo Mazzotti, Selene Matta, Filippo Giubileo, Daniela Marongiu, Elisa Pili, Francesco Mattana, Antonella Masci, Francesco De Chiara, Giovanni Pennelli, Michele Saba, Andrea Mura, Valeria Demontis, Giovanni Bongiovanni, Antonio Di Bartolomeo   +16 more
wiley   +1 more source