Results 31 to 40 of about 1,598,790 (312)

Evaluation of bone growth around bioactive glass S53P4 by scanning acoustic microscopy co-registered with optical interferometry and elemental analysis

Scientific Reports, 2023
Bioactive glass (BAG) is a bone substitute that can be used in orthopaedic surgery. Following implantation, the BAG is expected to be replaced by bone via bone growth and gradual degradation of the BAG.
Axi Holmström, Antti Meriläinen, Jere Hyvönen, Anton Nolvi, Tuomo Ylitalo, Kari Steffen, Robert Björkenheim, Gustav Strömberg, Heikki J. Nieminen, Ivan Kassamakov, Jukka Pajarinen, Leena Hupa, Ari Salmi, Edward Hæggström, Nina C. Lindfors   +14 more
doaj   +1 more source

Wideband acoustic microscopy of tissue [PDF]

The Journal of the Acoustical Society of America, 1988
A scanning acoustic microscope (SAM) has been used to measure the elastic properties of tissue with a resolution of around 8 μm (C. M. W. Daft et al., Proc. 1986 IEEE Ultrasonics Symposium, 945—948). This is achieved by broadband excitation of the acoustic lens, and the recording of an undemodulated returning signal.
Daft, C, Briggs, G
openaire   +2 more sources

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Modification of Olive Leaves’ Surface by Ultrasound Cavitation. Correlation with Polyphenol Extraction Enhancement

Applied Sciences, 2020
We investigated the impact of ultrasound at 20 kHz on olive leaves to understand how acoustic cavitation could increase polyphenol extraction. Application of ultrasound to whole leaf from 5 to 60 min enabled us to increase extraction from 6.96 to 48.75 ...
Natacha Rombaut, Tony Chave, Sergey I. Nikitenko, Mohamed EI Maâtaoui, Anne Sylvie Fabiano-Tixier, Farid Chemat   +5 more
doaj   +1 more source

Reviving the sound of a 150-year-old insect: The bioacoustics of Prophalangopsis obscura (Ensifera: Hagloidea).

PLoS ONE, 2022
Determining the acoustic ecology of extinct or rare species is challenging due to the inability to record their acoustic signals or hearing thresholds.
Charlie Woodrow, Ed Baker, Thorin Jonsson, Fernando Montealegre-Z   +3 more
doaj   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Ultrasound Microscopy-Based Identification of Enamel and Restorative Materials: An Ex Vivo Acoustic Impedance Study

International Dental Journal
Introduction and aims: Differentiating restorative materials from enamel during dental examinations is challenging because of their similar appearances.
Yukihiro Naganuma, Masatoshi Takahashi, Yoshifumi Saijo, Masahiro Iikubo, Atsushi Takahashi   +4 more
doaj   +1 more source

Conformational Switching of Proteins on Material Surfaces Enabled by Peptide‐Oriented Adsorption

Advanced Functional Materials, EarlyView.
Responsive biointerfaces could be achieved using conformationally responsive proteins; however, their interconversion can be lost upon surface adsorption. Herein, we demonstrate that the incorporation a Au binding peptide into calmodulin allows for binding control on Au wherein the protein retains conformational switching. This capability was confirmed
Sakthirupini Ramamurthy, Kyle B. Meerbott, Lorenzo Travaglini, Garima S. Dobhal, Artur Sawicki, Marc R. Knecht, Tiffany R. Walsh, Dominic J. Glover   +7 more
wiley   +1 more source

Correlation between Surface Tension, Work of Adhesion in Liquid Metals/Ceramic Systems, and Acoustic Parameters

Успехи физики металлов, 2018
In the paper, a correlation between acoustic velocities, elastic moduli, and densities, with surface tension, and work of adhesion of different liquid metals on a given ceramic is studied and demonstrated.
Z. Hadef, A. Doghmane, K. Kamli, Z. Hadjoub
doaj   +1 more source

Acoustic Attenuation of COVID-19 Face Masks: Correlation to Fibrous Material Porosity, Mask Breathability and Bacterial Filtration Efficiency

Acoustics, 2022
This paper presents an experimental study on acoustic attenuation of different types of face masks in use by the general population during the COVID-19 pandemic. In particular, measurements are performed on ten samples of masks, of which four are medical
Milena Martarelli, Luigi Montalto, Paolo Chiariotti, Serena Simoni, Paolo Castellini, Gianmarco Battista, Nicola Paone   +6 more
doaj   +1 more source