Results 61 to 70 of about 57,753 (299)

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

Advanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan, Wentao Wang, Xiu Liang, Yongliang Zhang, Jie Liu, Yu Bai, Dangyuan Lei   +6 more
wiley   +1 more source

Laser‐Welded Cellulose‐Carbon Nanotube Nanocomposites as a 3D Scaffold of Si Anodes for High‐Performance Lithium‐Ion Batteries

Advanced Functional Materials, EarlyView.
A Si anode comprising entangled networks of cellulose and SWCNT (C‐CNT) nanocomposites as an anode electrode for a high‐performance LIB is realized by fully utilizing the generated microstructure of a novel conductive 3D scaffold via a low‐temperature and eco‐friendly process. Additionally, localized heating via photo‐thermal conversion can be utilized
Boeun Ryu, Younghoon Jung, Hojin Son, Min‐Young Kim, Jinsub Lim, Changhun Yun   +5 more
wiley   +1 more source

High-frequency ultrasonic speckle velocimetry in sheared complex fluids

, 2003
High-frequency ultrasonic pulses at 36 MHz are used to measure velocity profiles in a complex fluid sheared in the Couette geometry. Our technique is based on time-domain cross-correlation of ultrasonic speckle signals backscattered by the moving medium.
A. Colin, Ackerson, Bandyopadhyay, Barnes, Berson, Bohs, Bonnefous, Brito, Britton, Cappelaere, Christopher, Diat, Echevarría, Ferrara, Ferrara, Foster, Goddard, Groisman, Hanlon, Hein, Kaisar Al, L. Bécu, Larson, Mair, Manneville, Mordant, Mueth, Olmsted, Ouriev, Ozaki, Peschard, Porte, Roux, S. Manneville, Salmon, Salmon, Salmon, Salmon, Schmitt, Sierro, Spenley, Sugiura, Takeda, Takeda, Turnbull, Wheeler, Wunenburger, Zuikova   +47 more
core   +3 more sources

Prediction of concrete compression strength using ultrasonic pulse velocity [PDF]

AIP Conference Proceedings, 2016
The relationship of ultrasonic stress waves transmitted along direct and indirect paths in concrete samples was investigated. Tests were conducted on plain concrete slabs from different grades of 15, 25, 30, 40 and Ultrahigh Performance Concrete that have dimensions of 750mm x 150mm x 150 mm.
M. N. Azreen, I. M. Pauzi, I. Nasharuddin, M. M. Haniza, J. Akasyah, A. D. Karsono, V. Yen Lei   +6 more
openaire   +1 more source

Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires

Advanced Functional Materials, EarlyView.
Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar, Jorge Marqués‐Marchán, Sara Catalano, Agustina Asenjo, Michael Foerster, Miguel Angel Niño, Manuel Vazquez, Fèlix Casanova, Arantxa Fraile Rodríguez, Rafael P. Del Real, Oksana Chubykalo‐Fesenko, Cristina Bran   +11 more
wiley   +1 more source

Ultrasonic Pulse Velocity—Compressive Strength Relationship for Portland Cement Mortars Cured at Different Conditions

Crystals, 2020
The purpose of this paper is to establish some correlations between the main technical parameter with regard to the cement-based materials technology, the 28-day compressive strength, and ultrasonic pulse velocity of standard mortar samples cured at ...
Esteban Estévez, Domingo Alfonso Martín, Cristina Argiz, Miguel Ángel Sanjuán   +3 more
doaj   +1 more source

Direct sonic and ultrasonic wave velocity in masonry under compressive stress [PDF]

, 2014
Sonic Pulse Velocity Testing and Ultrasonic Testing are widely accepted non-destructive testing techniques that can be used to investigate historical masonry structures.
Fernandes, Francisco Manuel Carvalho Pinto, Manning, Elizabeth Campbell, Ramos, Luís F.   +2 more
core  

Crystal Nucleation by Laser-Induced Cavitation\ud [PDF]

, 2011
High-speed and high-resolution photography have been used to investigate the relationship between creation, expansion, and collapse of a vapor cavity induced by a 6 ns laser pulse and the subsequent nucleation of crystals.
Cains, Peter W., Dijkink, Rory, Kramer, J.M., Lohse, Detlef, Rodriguez Pascual, Marcos, Soare, Anamaria, Stankiewicz, Andrzej I., Sun, Chao   +7 more
core   +2 more sources

Selective Separation of the Rare Earth Elements Dysprosium and Neodymium via Tailoring Nanocellulose Chemical Structure

Advanced Functional Materials, EarlyView.
Dicarboxylate‐modified anionic hairy cellulose nanocrystals exhibit a high selectivity for dysprosium(III) over neodymium(III). This selectivity arises from disordered dicarboxylate cellulose “hairs” that enable cooperative ionic coordination, hydrogen bonding, and strain‐induced conformational shrinkage.
Roya Koshani, Shang‐Lin Yeh, Karuna Anna Sajeevan, Mica L. Pitcher, Dawson Alexander, Ratul Chowdhury, Amir Sheikhi   +6 more
wiley   +1 more source

Real-time diagnostics of gas/water assisted injection moulding using integrated ultrasonic sensors [PDF]

, 2007
YesAn ultrasound sensor system has been applied to the mould of both the water and gas assisted injection moulding processes. The mould has a cavity wall mounted pressure sensor and instrumentation to monitor the injection moulding machine.
Brown E. C., C. C. Cheng, C. K. Jen, E. C. Brown, Eckardt H., Kobayashi M., L. Mulvaney-Johnson, P. D. Coates, Pearson T., Piché L., Selfridge A. R., Thomas C. L., Thomas C. L., Thomas C. L., Wen S.-S. L., Y. Ono, Yang S. Y., Zhao J.   +17 more
core   +1 more source