Results 71 to 80 of about 137,687 (347)

THz‐Driven Coherent Phonon Fingerprints of Hidden Symmetry Breaking in 2D Layered Hybrid Perovskites

Advanced Materials, EarlyView.
Intense THz pulses are employed to drive coherent phonons in 2D Ruddlesden‐Popper hybrid metal‐halide perovskites (HOIPs) from the (PEA)2(MA)n‐1PbnI3n+1 family, revealing mode‐selective spectroscopic signatures of inversion symmetry breaking in those nominally centrosymmetric materials. These findings provide a handle to decode nonlinear phonon driving
Joanna M. Urban, Michael S. Spencer, Maximilian Frenzel, Gaëlle Trippé‐Allard, Marie Cherasse, Charlotte Berrezueta‐Palacios, Prakriti P. Joshi, Alexander P. Fellows, Olga Minakova, Eduardo B. Barros, Luca Perfetti, Stephanie Reich, Martin Wolf, Emmanuelle Deleporte, Sebastian F. Maehrlein   +14 more
wiley   +1 more source

„BLACK-SCHOLES MODEL USED TO EVALUATE STOCKS OPTIONS” [PDF]

Annals of the University of Oradea: Economic Science, 2010
Partial differential equation, parabolic Black-Scholes type, is used in evaluating equity options, that paying constant and continue dividends or in evaluate options in which interest rate, volatility and dividend are dependent on time.
Turcan Radu Olimpiu Calin
doaj  

Mixed problem for the singular partial differential equation of parabolic type

Karpatsʹkì Matematičnì Publìkacìï, 2018
The scheme for solving of a mixed problem is proposed for a differential equation \[a(x)\frac{\partial T}{\partial \tau}= \frac{\partial}{\partial x} \left(c(x)\frac{\partial T}{\partial x}\right) -g(x)\, T\] with coefficients $a(x)$, $g(x)$ that are the
O.V. Makhnei
doaj   +1 more source

Biological and Biologically Inspired Functional Nanostructures: Insights into Structural, Optical, Thermal, and Sensing Applications

Advanced Materials, EarlyView.
Biological and biologically‐inspired functional nanostructures with structural, thermal, optical, and sensing applications are reviewed. The role of nanoscale features in biological materials on performance is described, and their blueprints are used for bio‐inspired nanomaterials, synthesized using advanced techniques (i.e., photolithography, bio ...
Chao Hsuan (Joseph) Sung, Taige Hao, Herry Fang, Andrew Tran Nguyen, Valentina Perricone, Haitao Yu, Wei Huang, Ezra Sarmiento, Adrian Francisco Duran Ornelas, Derek Lublin, Ric Wehling, Sanaz Farajollahi, Atsushi Arakaki, Dhriti Nepal, Nathan Patrick Lord, David Kisailus   +15 more
wiley   +1 more source

Kelvin Probe Force Microscopy in Bionanotechnology: Current Advances and Future Perspectives

Advanced Materials, EarlyView.
Kelvin probe force microscopy (KPFM) enables the nanoscale mapping of electrostatic surface potentials. While widely applied in materials science, its use in biological systems remains emerging. This review presents recent advances in KPFM applied to biological samples and provides a critical perspective on current limitations and future directions for
Ehsan Rahimi, Mario Palacios‐Corella, Arjan Mol, Salvador Pané, Josep Puigmartí‐Luis   +4 more
wiley   +1 more source

On semi-linear parabolic partial differential equations

Publications of the Research Institute for Mathematical Sciences, 1965
We give an operator theoretical treatment of initial value problems for semi-linear parabolic partial differential equations: existence of solutions, uniqueness and regularity. We make use of the theory of fractional powers of operators, the theory of semigroups of operators and L2-estimates for elliptic boundary value problems.
openaire   +4 more sources

Inverse Spillover and Dimensionality Effects on Interstitial Hydrogen

Advanced Materials Interfaces, EarlyView.
Interstitial hydrogen behaves distinctly at interfaces compared to the bulk. Vanadium films show proximity‐dependent hydrogen depletion near interfaces–an inverse of hydrogen spillover. Ion beam and resistivity measurements reveal Fe/V‐superlattices have lower hydrogen solubility and higher critical temperature than Cr/V due to proximity‐induced finite
Kristina Komander, Gunnar K. Pálsson, Sotirios A. Droulias, Theofanis Tsakiris, David Sörme, Max Wolff, Daniel Primetzhofer   +6 more
wiley   +1 more source

Nonlinear functional integrodifferential equations in Hilbert space

International Journal of Mathematics and Mathematical Sciences, 1999
Let X be a Hilbert space and let Ω⊂Rn be a bounded domain with smooth boundary ∂Ω. We establish the existence and norm estimation of solutions for the parabolic partial functional integro-differential equation in X by using the fundamental solution.
J. Y. Park, S. Y. Lee, M. J. Lee
doaj   +1 more source

Degenerate parabolic stochastic partial differential equations

Stochastic Processes and their Applications, 2013
In this thesis, we address several problems arising in the study of nondegenerate and degenerate parabolic SPDEs, stochastic hyperbolic conservation laws and SDEs with continues coefficients. In the first part, we are interested in degenerate parabolic SPDEs, adapt the notion of kinetic formulation and kinetic solution and establish existence ...
openaire   +2 more sources

Formation Mechanism of Two‐Layered AlO(OH) Films on Aluminum Alloys via the Steam Coating Process

Advanced Materials Interfaces, EarlyView.
The mechanism of AlO (OH) film formation on Al alloys in a steam atmosphere using a new surface treatment technology, steam coating, is investigated. Liquid phase subcritical water in the autoclave promotes film formation. Furthermore, the two‐layered structure of the film originates from ion diffusion of OH− and Al3+ within the film and crystal ...
Kensuke Kurihara, Ai Serizawa
wiley   +1 more source