Results 51 to 60 of about 12,862 (307)

Laser beam deflection as a probe of laser ablation of materials [PDF]

, 1989
Helium‐neon laser beam deflection is used to study excimer laser ablation of polymers and a YBa2 Cu3 O7−x superconductor. Density gradients above pulsed laser heated or ablated samples deflect the He‐Ne laser beam and this is measured using a position ...
Peter Ventzek, Ventzek, Peter L. G., Gilgenbach, Ronald M., Sell, Jeffrey A., Jeffrey A. Sell, Heffelfinger, David M., David M. Heffelfinger, Ronald M. Gilgenbach   +7 more
core   +1 more source

General Relativity Sans Differential Geometry: Representing Tensor Elements by Exponential Terms

Advances in Mathematical Physics
Precepts of general relativity are derived without using the detailed language of the conventional mathematical approach, differential geometry. Instead, we use the better-known language of 19th-century mathematical physics, which was available to ...
Donald H. Eckhardt, José Luis Garrido Pestaña   +1 more
doaj   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

The Components of Deflection of the Vertical Calculations for Heights in Computations and Adjustments of Physical Projects

, 2018
The deflection of the vertical is an important parameter of the local gravity field which must not be neglected during survey measurements. In most survey (Geodetic) measurements, the components of deflection of the vertical are not considered as a result of non availability of detailed maps in such area or region.
ETEJE S., O., ODUYEBO O., F., ONO M. N
openaire   +1 more source

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

Advanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa, Lin‐Ding Yuan, Stephen D. Wilson, James M. Rondinelli   +3 more
wiley   +1 more source

Thin-shell configurations in Hayward profile: Dynamical stability, shadows, and light deflection angle

Nuclear Physics B
This study investigates the geometric configurations and dynamical behavior of thin-shell structures within the Hayward black hole (BH) framework. Using the Klein-Gordon (KG) equation and equation of motion, we analyze the evolution of thin-shells ...
Rabia Saleem, Naila Aslam, Muhammad Israr Aslam   +2 more
doaj   +1 more source

Strain‐Programmable Luminescent Adhesive Patch With Tartrazine‐Mediated Optical Skin Clearing for Photochemical Tissue Bonding

Advanced Functional Materials, EarlyView.
We propose a suture‐complementary approach that integrates optical skin clearing with a strain‐programmable luminescent adhesive patch. Hyaluronic acid promotes transdermal delivery of tartrazine to improve optical clearing and stabilizes its interaction with a photosensitizer. Optical clearing increases the penetration depth of visible light into skin,
Seong‐Jong Kim, Kyungjoo Jo, Kwanghyeon Park, Jun Hee Kim, Jong Hyeong Cho, Inhoo Choi, Sei Kwang Hahn   +6 more
wiley   +1 more source

Multi-modal characterization of nanogram amounts of a photosensitive polymer

, 2018
Here, we demonstrate multi-modal approach of simultaneous characterization of poly(vinyl cinnamate) (PVCN) using a microcantilever sensor. We integrate nanomechanical thermal analysis with photothermal cantilever deflection spectroscopy for discerning ...
Jeon, S, Kim, S, Yun, M, Jung, N, Thundat, T, Lee, D   +5 more
core   +1 more source

Mechanical Behavior and Fracture Mechanisms of MXene/PVDF Nanocomponsites: In Situ Characterization and Multiscale Analysis

Advanced Functional Materials, EarlyView.
Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou, James FitzPatrick, Li Meng, Kateryna Shevchuk, Ahmad Najafi, Yury Gogotsi   +5 more
wiley   +1 more source

Geodesics and light deflection in Schwarzschild-like spacetime from cosmology-inspired modified gravity

European Physical Journal C: Particles and Fields
We investigate cosmology-driven modifications to Schwarzschild-like black hole spacetimes and analyze their impact on photon propagation, gravitational lensing, and shadow observation.
Ritesh Pandey, Shubham Kala, Amare Abebe, Hemwati Nandan, G.G.L. Nashed   +4 more
doaj   +1 more source