Results 41 to 50 of about 74,327 (228)

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Hamiltonian dynamics of extended objects

, 2004
We consider a relativistic extended object described by a reparametrization invariant local action that depends on the extrinsic curvature of the worldvolume swept out by the object as it evolves.
Ambjorn J, Bordemann M, Capovilla R, Capovilla R, Capovilla R, Capovilla R, Capovilla R Guven J Rojas E, Capovilla R Guven J Rojas E, Carter B, Curtright T, Deser S, Dirac P A M, Dolan B P, Garfinkle D, Goto T, Henneaux M, Hoppe J, Hoppe J, Hoppe J, Karasik D, Nambu Y, Nelson D, Nesterenko V V, Nesterenko V V, Ostrogradski M, Polyakov A M, Regge T, Rogers C, Seifert U, Smolin L, Tolman R C, Wald R   +31 more
core   +2 more sources

Membrane geometry with auxiliary variables and quadratic constraints [PDF]

, 2004
Consider a surface described by a Hamiltonian which depends only on the metric and extrinsic curvature induced on the surface. The metric and the curvature, along with the basis vectors which connect them to the embedding functions defining the surface ...
Canham P, Capovilla R, Chaiken P, David F, David F Ginsparg P Zinn-Justin J, Evans E, Evans E, Evans E, Evans E, Goulian M, Helfrich W, Jemal Guven, Lipowsky R, Nelson D, Peliti L, Polchinski J, Polyakov A M, Seifert U, Spivak M, Vilenkin A, Willmore T J, Zhong-Can O Y   +21 more
core   +2 more sources

A Thermodynamic 3D Model for the Simulation of Diffusion‐Controlled Alloying Processes in Heterogeneous Material Structures

Advanced Engineering Materials, EarlyView.
A numerical model resulting from irreversible thermodynamics for describing transport processes is introduced, focusing on thermodynamic activity gradients as the actual driving force for diffusion. Implemented in CUDA C++ and using CalPhaD methods for determining the necessary activity data, the model accurately simulates interdiffusion in aluminum ...
Ulrich Holländer, Leonhard Holländer, André Langohr, Hans Jürgen Maier   +3 more
wiley   +1 more source

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Carbon Risk Without a Stable Premium: Nonlinear and State-Dependent Evidence from European ESG Leaders

Risks
Despite the economic relevance of climate-transition risk, firm-level carbon exposure often fails to appear as a robustly priced factor when ESG measures and sustainability shocks are conflated.
Eleonora Salzmann
doaj   +1 more source

Trap‐Assisted Transport and Neuromorphic Plasticity in Lead‐Free 2D Perovskites PEA2SnI4

Advanced Functional Materials, EarlyView.
An artificial retina built from lead‐free layered perovskite (PEA)2SnI4 converts light input into a persistent photocurrent and sums successive flashes over time. Micro/nanocrystals integrated on electrodes act as synapse‐like pixels that perform temporal integration directly in hardware. This in‐sensor preprocessing merges detection and computation on
Ofelia Durante, Valeria Demontis, Karl Jonas Riisnaes, Lam Hoi Tung, Sebastiano De Stefano, Daniela Marongiu, Adolfo Mazzotti, Aditya Bhardwaj, Francesco Mattana, Elisa Pili, Selene Matta, Federico Paolucci, Michele Saba, Andrea Mura, Giovanni Bongiovanni, Monica F Craciun, Saverio Russo, Antonio Di Bartolomeo   +17 more
wiley   +1 more source

Quantum Magnetic Algebra and Magnetic Curvature

, 2003
The symplectic geometry of the phase space associated with a charged particle is determined by the addition of the Faraday 2-form to the standard structure on the Euclidean phase space.
Anderson R F V, Anderson R F V, Bayen F, Berezin F A, Berry M V, Bieliavsky P, Bieliavsky P, Cartan É, Dodonov V V, Dyson F J, Fedosov B, Fock V A, Folland G B, Gracia-Bondia J M, Grossmann A, Hormander L, Karasev M V, Karasev M V, Karasev M V, Karasev M V Osborn T A M A Vasiliev A M Semikhatov V N Zaikin, Kontsevich M, Loos O, M V Karasev, Marinov M S, Maslov V P, Maslov V P, Müller M, Omori H, Rawnsley J, Rieffel M A, Royer A, Schutz B, Stratonovich R L, Stratonovich R L, T A Osborn, Valatin J G, Varilly J C, Weinstein A, Weyl H   +38 more
core   +1 more source

Renormalization of the asymptotically expanded Yang-Mills spectral action [PDF]

, 2011
We study renormalizability aspects of the spectral action for the Yang-Mills system on a flat 4-dimensional background manifold, focusing on its asymptotic expansion.
A. Connes, A. Connes, A.A. Slavnov, A.A. Slavnov, A.H. Chamseddine, A.H. Chamseddine, A.H. Chamseddine, C. Martin, C. Martin, D.V. Vassilevich, F. Brandt, I. Avramidi, J.A. Dixon, L. Faddeev, M. Dubois-Violette, M. Dubois-Violette, M. Dubois-Violette, N. Berline, O. Babelon, P.B. Gilkey, P.I. Pronin, P.I. Pronin, S.W. Hawking, T.P. Branson, W.D. Suijlekom van, W.D. Suijlekom van, Walter D. van Suijlekom   +26 more
core   +3 more sources

Temperature‐Induced Nonvolatile Switching through Thermal Hysteresis in a Gd3Fe5O12/Ho3Fe5O12 Exchange‐Coupled Rare‐Earth Iron Garnet Bilayer

Advanced Functional Materials, EarlyView.
Reducing power consumption in spintronic memory remains a major challenge due to the need for high current densities. A bilayer of gadolinium and holmium iron garnets enables purely temperature‐induced, nonvolatile magnetic switching with bistable states within a ±25 K range. This approach achieves up to 66‐fold lower energy use than current spin–orbit
Junseok Kim, Phuoc Cao Van, Jong‐Ryul Jeong, Hyungyu Jin   +3 more
wiley   +1 more source