Results 81 to 90 of about 2,194,277 (301)

Comprehensive study of absorption coefficient and charge carrier generation in methylammonium lead iodide perovskite solar cells

open access: yesResults in Physics
This study investigates the mechanisms of photon absorption and the rate of charge carrier generation in methylammonium lead iodide (MAPbI3) perovskite solar cells.
Hamid Shahivandi
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

Experimental investigation of CoFe$_2$O$_4$ particle size and acoustic properties of magnetic fluid

open access: yesArchives of Acoustics, 2014
In this paper magnetic particle size and acoustic properties of the ferrofluid with CoFe$_2$O$_4$ particles are presented. The results acquired from atomic force microscope measurements will let us set average value for the hydrodynamic diameter of ...
Bartek Zieliński   +2 more
doaj  

An alternative coefficient for sound absorption [PDF]

open access: yes, 2013
The acoustic absorption coefficient is a number that indicates which fraction of the incident acoustic power impinging on a surface is being absorbed.
Wijnant, Ysbrand H.   +2 more
core   +3 more sources

Effect of continuous phase drug concentration, evaporation and partitioning on transdermal drug permeation kinetics with lipophilic vehicles [PDF]

open access: yes, 2008
In this work the dependence of transdermal drug permeation kinetics on continuous phase drug concentration, partitioning between formulation phases, partitioning between stratum corneum and continuous oil phase and evaporation of volatile formulation ...
Reiser, Miriam Regina Luise
core   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

open access: yesAdvanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora   +4 more
wiley   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

open access: yesAdvanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal   +2 more
wiley   +1 more source

VUV absorption coefficient measurements of borate matrices

open access: yes, 2001
International audienceWe present results obtained by direct absorption coefficient measurement on YBO3 thin films in the wavelength range from 120 to 240 nm.
J Mugnier   +11 more
core   +1 more source

Flexural Behavior of 3D‐Printed Porous Bouligand‐Structured Polymers: Influence of Pitch Angle and Porosity

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how helicoidal architectures with different porosities respond to bending. Adjusting layer angle and spacing in 3D‐printed polymers reveals clear tradeoffs between stiffness, strength, and energy absorption. Experiments and simulations highlight designs that distribute stress effectively, offering pathways for optimizing lightweight
Praveenkumar Subhash Patil   +2 more
wiley   +1 more source

Optical Goniometer Paired with Digital Monte Carlo Twin to Determine the Optical Properties of Turbid Media

open access: yesSensors
We present a goniometer designed for capturing spectral and angular-resolved data from scattering and absorbing media. The experimental apparatus is complemented by a comprehensive Monte Carlo simulation, meticulously replicating the radiative transport ...
Levin Stolz   +3 more
doaj   +1 more source

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