Results 131 to 140 of about 360,646 (291)

On Psi-function for finite-gap potentials

, 2000
A way to derive an explicit formulae in terms of the potentials, if they are finite-gap, for the solutions of spectral problems and corresponding algebraic curves is presented.
Ustinov, N. V., Brezhnev, Yu. V.
openaire   +2 more sources

Optical Manipulation of Multiferroic Phases in BiFeO3 Thin Films

Advanced Materials Interfaces, EarlyView.
At the strain‐driven morphotropic phase boundary, optical control over the multiferroic rhombohedral and tetragonal phase mixture is demonstrated using above‐bandgap light illumination. The photoinduced charge carriers modify the electrostatic environment and induce the conversion into a single tetragonal phase.
Bixin Yan, Lauren J. Riddiford, Aleš Hrabec, Annika Mechnich, Valentine Gillioz, Christian L. Degen, Manfred Fiebig, Morgan Trassin   +7 more
wiley   +1 more source

Impact of Paper Substrates and Storage Conditions on the Stability of Blood Grouping Assays

Advanced Materials Interfaces, EarlyView.
Four paper‐based blood grouping assays are constructed from cellulose and nitrocellulose, with vertical and lateral flow formats. The optimal storage conditions are determined based on temperature, antibody storage buffer composition, and antibody dilution.
Laura Marcela Rey Gomez, David William Inglis, Andrew Care, Yuling Wang, Rena Hirani   +4 more
wiley   +1 more source

Complete Asymptotic Expansions for the Double Harmonic Sum and Related Constants [PDF]

Contributions to Mathematics
Shun-Wei Xu, Chao-Ping Chen
doaj   +1 more source

Two‐Way Shape Memory Polymer Composite Gripper for Adaptive Robotic Applications

Advanced Materials Technologies, EarlyView.
A two‐way shape memory polymer (SMP) composite is developed with intrinsic shape‐changing capability driven solely by temperature, eliminating external actuation loads. Embedding the SMP in a low‐stiffness elastomeric matrix enabled reversible transformations during heating and cooling cycles.
Aamna Hameed, Kamran Ahmed Khan
wiley   +1 more source

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

Advanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini, Hadi Hosseini, Seyyed Alireza Hashemi, Mohammad Arjmand   +3 more
wiley   +1 more source

Pattern Formation in Non‐Equilibrium Architected Materials

Advanced Materials Technologies, EarlyView.
This article demonstrates an artificial mechanical system ‐ a robotic metamaterial ‐ as an accessible and versatile platform within which to explore and prescribe the reaction‐diffusion driven pattern formation hitherto associated with comparatively less accessible and versatile non‐equilibrium biological and chemical systems.
Vinod Ramakrishnan, Michael J. Frazier
wiley   +1 more source

3D Printed Multimaterial Microfluidic Transistors

Advanced Materials Technologies, EarlyView.
We introduce a biocompatible, high resolution photopolymer resin that closely mimics the Young's Modulus (elasticity) and reversible stretchability (no hysteresis) of poly(dimethylsiloxane) (PDMS), enabling the fabrication of microfluidic transistors (i.e., microvalves capable of proportional amplification) by multimaterial stereolithography (mSLA ...
Alireza Ahmadianyazdi, Wei Huang, Kaustav A. Gopinathan, Ivan Stepanov, Lisa Horowitz, Ting‐Yuan Tu, Mehmet Toner, Albert Folch   +7 more
wiley   +1 more source

Perfusion Bioreactor Culture Incorporating Mechanical Confinement Enhances Mesenchymal Stem Cell Extracellular Vesicle Production and Wound Healing Potential

Advanced Materials Technologies, EarlyView.
Scalable manufacturing challenges and limited potency remain two of the most intransigent issues limiting clinical translation of EV therapeutics. Mechanical cues can induce phenotypic changes and increased vesiculation in EV source cells without the use of extraneous reagents, chemicals, and/or cargo, thereby potentially drastically improving the ...
Emily H. Powsner, Raith Nowak, Stephanie M. Kronstadt, Nicholas H. Pirolli, Talia J. Solomon, Kristin Nikolov, William Pieper Holeman, Ian M. Smith, Kimberly M. Stroka, John P. Fisher, Steven M. Jay   +10 more
wiley   +1 more source

Riemann hypothesis from the Dedekind psi function

, 2010
Let $\mathcal{P}$ be the set of all primes and $ (n)=n\prod_{n\in \mathcal{P},p|n}(1+1/p)$ be the Dedekind psi function. We show that the Riemann hypothesis is satisfied if and only if $f(n)= (n)/n-e^ \log \log n <0$ for all integers $n>n_0=30$ (D), where $ \approx 0.577$ is Euler's constant.
openaire   +2 more sources