Results 51 to 60 of about 19,632 (287)

Holographic Scanning Laser Acoustic Microscopy (HOLOSLAM): A New QNDE Tool [PDF]

, 1990
Acoustic microscopy is the name given to high frequency, 10 MHz to 3 GHz ultrasonic visualization. The scanning laser acoustic microscopy (SLAM) is an important branch of acoustic microscopy which uses ultrasound in the frequency range of 10 to 200 MHz ...
Kessler, L., L. W. Kessler, A. C. Wey, Wey, A. C.   +3 more
core   +2 more sources

Near-field acoustic imaging with a caged bubble

Nature Communications
Bubbles are ubiquitous in many research applications ranging from ultrasound imaging and drug delivery to the understanding of volcanic eruptions and water circulation in vascular plants. From an acoustic perspective, bubbles are resonant scatterers with
Dorian Bouchet, Olivier Stephan, Benjamin Dollet, Philippe Marmottant, Emmanuel Bossy   +4 more
doaj   +1 more source

Stochastic excitation for high-resolution atomic force acoustic microscopy imaging: a system theory approach

Beilstein Journal of Nanotechnology, 2020
In this work, a high-resolution atomic force acoustic microscopy imaging technique is developed in order to obtain the local indentation modulus at the nanoscale level.
Edgar Cruz Valeriano, José Juan Gervacio Arciniega, Christian Iván Enriquez Flores, Susana Meraz Dávila, Joel Moreno Palmerin, Martín Adelaido Hernández Landaverde, Yuri Lizbeth Chipatecua Godoy, Aime Margarita Gutiérrez Peralta, Rafael Ramírez Bon, José Martín Yañez Limón   +9 more
doaj   +1 more source

Toward Enhanced Inertial Sensing via Dynamically Soft Topological States in Piezoelectric Microacoustic Metamaterials

Advanced Functional Materials, EarlyView.
A piezoelectric microacoustic wave device exploiting topologically protected interface states with significantly higher dynamic compliance than Lamb or Rayleigh modes achieves record‐high out‐of‐plane particle velocities exceeding 51 m/s. These findings indicate that leveraging topological interface states can overcome key limitations of piezoelectric ...
Onurcan Kaya, Niccolò Scalise Pantuso, Marco Galli, Jacopo M. De Ponti, Tommaso Maggioli, Davide Pavesi, Siddhartha Ghosh, Attilio Frangi, Luca Colombo, Benyamin Davaji, Matteo Rinaldi, David Horsley, Cristian Cassella   +12 more
wiley   +1 more source

IN-SITU SCANNING ACOUSTIC MICROSCOPY OF CRACK BRIDGING IN ALUMINA [PDF]

, 1994
High-resolution scanning acoustic microscopy has been used to observe crack bridging in a fine-grained polycrystalline alumina. The microscope is sensitive to the increased acoustic transmission across the crack from the interlocking and sliding ...
ROBERTS, Steve, MARROW, T, BRIGGS, G, BRIGGS, George, ROBERTS, S   +4 more
core   +1 more source

Ultrawide Bandwidth Optomechanical Magnetometry Using Flux Concentration

Advanced Functional Materials, EarlyView.
High‐permeability flux concentrators enable ultrawide‐bandwidth chip‐scale optomechanical magnetometry by exploiting magnetic nonlinearity to up‐convert low‐frequency fields to the mechanical resonance, where sensitivity is optimal. This enables flat wideband operation over more than four orders of magnitude, from tens of kilohertz to sub‐hertz ...
Benjamin J. Carey, Nathaniel Bawden, Fernando Gottardo, James S. Bennett, Douglas Bulla, Scott Foster, Warwick P. Bowen   +6 more
wiley   +1 more source

The nature of condensed single molecules : local electronic and mechanical characteristics [PDF]

, 2014
In order to advance the performance of molecule based electronic devices a detailed and fundamental knowledge about the underlying physical aspects is mandatory.
Fremy, Sweetlana Deva
core   +1 more source

Scanning acoustic microscopy of polymeric materials and biological substances

Archives of Acoustics, 2015
For the last few years a new method of visualization and quantitative analysis of physico-mechanical properties and microstructure of heterogenetic media — the acoustic microscopy — has been intensively elaborated in the world.
Roman Gr. MAYEV
doaj  

Gardiquimod Nanoemulsion Targets Cutaneous Leishmaniasis Lesions Reducing Systemic Toxicity and Parasite Burden

Advanced Healthcare Materials, EarlyView.
Nanoemulsion delivery of a TLR7 agonist enhances safety and promotes colocalization with Leishmania‐infected macrophages in skin lesions, enabling a ∼2‐log reduction in parasite burden. However, tissue‐level constraints and TLR‐driven regulatory feedback generate a mixed immune response that limits complete parasite clearance.
Carmen Palomino‐Cano, M. Carmen Mera‐Delgado, Esther Moreno, Esther Larrea, Lecnia Aguirre, Jonathan Miguel Zanatta, Sónia Barros‐Carvalho, Iola F. Duarte, Ricardo Silvestre, Juan M. Irache, Javier Carrión, Socorro Espuelas   +11 more
wiley   +1 more source

Carotid atherosclerotic plaque characterisation by measurement of ultrasound sound speed in vitro at high frequency, 20 MHz [PDF]

, 2010
PhDThe first part of the study was to characterise the acoustic properties of an IEC agar-based tissue mimicking material (TMM) at ultrasound frequencies centred around 20 MHz.
Brewin, Mark Paul
core