Results 261 to 270 of about 29,042 (316)

When Cellulose Moves: Smart Sensors and Actuators

Advanced Materials Technologies, EarlyView.
This review highlights cellulose‐derived soft actuators alongside with cellulose‐based sensors. Emphasis is placed on their integration into multifunctional devices that couple sensing and actuation to mimic natural motion and adaptability. We also discuss the challenges of achieving robust, reversible, and multi‐stimuli‐responsive motion, and outline ...
Francisco Sousa, José F. Malta, Ana P. C. Almeida   +2 more
wiley   +1 more source

A Modular Microfluidic System to Generate Gradient Hydrogels with Simple‐to‐Complex Stiffness Profiles for Mechanobiology

Advanced Materials Technologies, EarlyView.
This work introduces a universal approach for fabricating stiffness gradient hydrogels with diverse stiffness ranges and gradient profiles. Gradient formation is achieved by precisely controlling the thermal landscape within a microfluidic system, which drives thermophoretic redistribution of precursor components in solution.
Shin Wei Chong, Jameel Sardharwalla, Gweneth Sofia P. Masonsong, Joshua Cosgrove, Anthony Katselas, Isaac J. Gresham, Marcela M. M. Bilek, Yi Shen, Chiara Neto, Daniele Vigolo   +9 more
wiley   +1 more source

Understanding and Circumventing Failure Mechanisms in Chalcogenide Optical Phase Change Material Ge2Sb2Se4Te

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Chalcogenide optical PCMs have gathered interest for their potential in compact, non‐volatile optics and photonics. Free‐space PCM metasurfaces require new considerations from phase change memory that need to be addressed for reliable scale‐up. Several failure mechanisms pertaining to free‐space PCM devices and layout methods are isolated to prevent ...
Cosmin Constantin Popescu, Kiumars Aryana, Brian Mills, Tae Woo Lee, Louis Martin‐Monier, Luigi Ranno, Jia Xu Brian Sia, Khoi Phuong Dao, Hyung‐Bin Bae, Vladimir Liberman, Steven A. Vitale, Myungkoo Kang, Kathleen A. Richardson, Carlos A. Ríos Ocampo, Dennis Calahan, Yifei Zhang, William M. Humphreys, Hyun Jung Kim, Tian Gu, Juejun Hu   +19 more
wiley   +1 more source

Exploring Double NDR Modulation and UV‐NIR Photodetection in MoS2/Sb2Se3 Heterostructures

Advanced Optical Materials, EarlyView.
In this study, a van der Waals Sb2Se3/MoS2 heterostructure exhibits dual negative differential resistance (NDR) peaks at room temperature. The first originates from band‐to‐band tunneling, while the second, triggered under laser illumination, is attributed to trap states and recombination dynamics.
Muhammad Suleman, Minwook Kim, Arslan Rehmat, Ehsan Elahi, Muhammad Asim, Muhammad Riaz, Sunil Kumar, Jongwan Jung, Yongho Seo   +8 more
wiley   +1 more source

Cloaking and Antennas: From Theoretical Paradigms to Next‐Generation Intelligent Systems

Advanced Optical Materials, EarlyView.
The inception of electromagnetic cloaking sparked an immediate question: Can antennas be made invisible? Two decades later, this review charts the intertwined progress of major cloaking strategies (from transformation optics to scattering cancellation), metasurface technology, and their application to antennas, revealing how AI‐enabled devices are ...
Helen Guo, Xun Li
wiley   +1 more source

Data trace as the scientific foundation for trusted metrological data: a review for future metrology direction. [PDF]

PeerJ Comput Sci
Cao Z, Gao B, Liu Z, Xiong X, Wang B, Pei C.   +5 more
europepmc   +1 more source

Taylor-Made Volatility Swaps [PDF]

SSRN Electronic Journal, 2015
Using little else than the mixing formula and Taylor expansions we show that the volatility swap strike is approximately the implied volatility corresponding to the strike where the vanna and vomma of a vanilla option is zero. As this result does not require any heavy numerical computations, and is valid for a large class of stochastic volatility ...
Frido Rolloos, Melih Arslan
openaire   +2 more sources

Some of the next articles are maybe not open access.

Related searches:

GARCH and Volatility swaps

Quantitative Finance, 2004
This article discusses the valuation and hedging of volatility swaps within the frame of a GARCH(1,1) stochastic volatility model. First we use a general and flexible partial differential equation (PDE) approach to determine the first two moments of the realized variance in a continuous or discrete context.
Espen Gaarder Haug, Alireza Javaheri, Paul Wilmott   +2 more
openaire   +2 more sources

On the valuation of variance swaps with stochastic volatility

Applied Mathematics and Computation, 2008
Abstract This paper is an extension to a recent paper by Zhu and Lian (2011) [1] , in which a closed-form exact solution was presented for the price of variance swaps with a particular definition of the realized variance. Here, we further demonstrate that our approach is quite versatile and can be used for other definitions of the realized variance ...
Zhu, Song-Ping, Lian, Guang-Hua
openaire   +5 more sources