Results 111 to 120 of about 451,587 (365)

Pseudostable bubbles [PDF]

open access: yesPhysical Review D, 1994
The evolution of spherically symmetric unstable scalar field configurations (``bubbles'') is examined for both symmetric (SDWP) and asymmetric (ADWP) double-well potentials. Bubbles with initial static energies $E_0\la E_{\rm crit}$, where $E_{\rm crit}$ is some critical value, shrink in a time scale determined by their linear dimension, or ``radius''.
openaire   +3 more sources

Machine Learning‐Assisted Inverse Design of Soft and Multifunctional Hybrid Liquid Metal Composites

open access: yesAdvanced Functional Materials, EarlyView.
A machine learning framework is presented for inverse design of synthesizable multifunctional composites containing both liquid metal and solid inclusions. By integrating physics‐based modeling, data‐driven prediction, and Bayesian optimization, the approach enables intelligent design of experiments to identify optimal compositions and realize these ...
Lijun Zhou   +5 more
wiley   +1 more source

Rational Asset Price Bubbles [PDF]

open access: yes
The solution to a linear model in which supply and/or demand depends on rational expectations of future prices can involve three parts, which we denote as the fundamental component, the deterministic bubble component, and the stochastic bubble component.
Herschel I. Grossman, Behzad T. Diba
core  

Bubble formation in nanopores: a matter of hydrophobicity, geometry, and size

open access: yesAdvances in Physics: X, 2020
This review focuses on the phase behaviour of liquids in nanoscale confinement, which promotes drying by a combination of hydrophobicity, small size, and high degree of confinement.
Alberto Giacomello, Roland Roth
doaj   +1 more source

Orbital Geometry‐Governed Response of Pressure‐Tunable Quantum Defects in hBN

open access: yesAdvanced Functional Materials, EarlyView.
Defects in hBN act as ultrasensitive quantum manometers when the energy of the intradefect optical transitions is modified by lattice compression. The orbital geometry of the electron wave functions governs how electron hopping and Coulomb interactions react uniquely to the reduction of the van der Waals gap and in‐plane compression, leading to robust ...
Magdalena Grzeszczyk   +6 more
wiley   +1 more source

The Spirit of Capitalism, Stock Market Bubbles, and Output Fluctuations [PDF]

open access: yes
This paper presents a representative agent model in which stock market bubbles cause output fluctuations. Assuming that utility depends directly on wealth, we show that stock market bubbles arise if the marginal utility of wealth does not decline to zero
Takashi Kamihigashi
core  

Smart Particles as Foam and Liquid Marble Stabilizers

open access: yesKONA Powder and Particle Journal, 2014
Small particles adsorbed to gas-liquid interfaces are widely observed and utilized in many products and various industrial sections, such as flotation, washing, food, water treatment, treatment of radioactive wastes,
Syuji Fujii, Ryo Murakami
doaj   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

open access: yesAdvanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg   +6 more
wiley   +1 more source

Rational Bubbles in Stock Prices? [PDF]

open access: yes
This paper reports empirical tests for the existence of rational bubbles in stock prices. The analysis focuses on a familiar model that defines market fundamentals to be the expected present value of dividends, discounted at a constantrate, and defines a
Herschel I. Grossman, Behzad T. Diba
core  

First hydroacoustic recording of ebullition events in an active volcanic lake – Poás, Costa Rica

open access: yesVolcanica
This study demonstrates how the sounds of subaqueous gas seeps can be used to measure the volume of volcanic gas being released into an active crater lake, weeks before an eruptive period.
Ben Roche   +8 more
doaj   +1 more source

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