Results 41 to 50 of about 6,950,236 (300)

Angularly selective thermal emitters for deep subfreezing daytime radiative cooling

open access: yesNanophotonics, 2022
We theoretically analyze the impact of angular selectivity on the radiative cooling performance of thermal emitters. We investigate the effect of spectral selectivity, environmental conditions, and parasitic heating on the minimum possible equilibrium ...
Chamoli Sandeep Kumar   +3 more
doaj   +1 more source

Enhanced Ultrasound Transmission Through Aberration Layers Using Space‐Coiling Acoustic Metamaterials

open access: yesAdvanced Engineering Materials, EarlyView.
Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami   +4 more
wiley   +1 more source

The Boston University Photonics Center annual report 2009-2010 [PDF]

open access: yes, 2010
This repository item contains an annual report that summarizes activities of the Boston University Photonics Center for the period from July 2009 through June 2010. The report provides quantitative and descriptive information regarding photonics programs
The Boston University Photonics Center
core   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

open access: yesAdvanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner   +14 more
wiley   +1 more source

Flipped-classroom with interactive videos in first year undergraduate physics course in Hong Kong

open access: yes, 2023
Fifteenth Conference on Education and Training in Optics and Photonics: ETOP 2019, 2 July 2019, Quebec, Canada202308 bcvcVersion of RecordOthersThe Hong Kong Polytechnic UniversityPublishedVoR ...
Wong, KL   +3 more
core   +1 more source

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

open access: yesAdvanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang   +14 more
wiley   +1 more source

High-Order Harmonic Generation in Au Nanoparticle-Contained Plasmas

open access: yesNanomaterials, 2020
Gold nanoparticles (NPs) have a wide range of applications in various fields. Here, we present high-order nonlinear optical studies of the plasmas produced from ablation of Au bulk targets and Au NP films deposited on paper and glass substrates ...
Mottamchetty Venkatesh   +10 more
doaj   +1 more source

Applied of Integrated Optical Biosensor based on Combination of Photonic Crystal Micro-Cavity and Ring Resonator [PDF]

open access: yesThe Transactions of The Korean Institute of Electrical Engineers, 2011
We propose a novel ring structure based on the stadium-shaped ring resonator (SSRR) with dual photonic crystal microcavity (DPCM) for biosensor and analyzed the sensing characteristics. The Q-factor of the photonic crystal microcavity (PCM) can be significantly enhanced when the PCM or DPCM has the same resonance condition as the SSRR.
Hong-Seung Kim   +4 more
openaire   +1 more source

The Boston University Photonics Center annual report 2011-2012 [PDF]

open access: yes, 2012
This repository item contains an annual report that summarizes activities of the Boston University Photonics Center in the 2011-2012 academic year. The report provides quantitative and descriptive information regarding photonics programs in education ...
The Boston University Photonics Center
core  

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

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