TITLE

High-frequency ultrasound array element using thermoelastic expansion in an elastomeric film

AUTHOR(S)
Buma, T.; Spisar, M.; O’Donnell, M.
PUB. DATE
July 2001
SOURCE
Applied Physics Letters;7/23/2001, Vol. 79 Issue 4
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The thermoelastic effect was used to produce high-frequency, broadband ultrasound in water. A pulsed diode laser, followed by an erbium-doped fiber amplifier, was focused onto a light-absorbing film deposited on a glass substrate. Conversion efficiency was improved by over 20 dB using an elastomeric film instead of a more commonly used metallic one. Radiation pattern measurements show that considerable energy is radiated at +/-45° for frequencies beyond 50 MHz. These results show that the thermoelastic effect can be used to produce phased arrays for high-frequency ultrasound imaging. © 2001 American Institute of Physics.
ACCESSION #
4825976

 

Related Articles

  • Stretchable gold conductors on elastomeric substrates. Lacour, Stéphanie Périchon; Wagner, Sigurd; Huang, Zhenyu; Suo, Z. // Applied Physics Letters;4/14/2003, Vol. 82 Issue 15, p2404 

    Stripes of thin gold films are made on an elastomeric substrate with built-in compressive stress to form surface waves. Because these waves can be stretched flat they function as elastic electrical conductors. Surprisingly, we observe electrical continuity not only up to an external strain of...

  • Space-charge-enhanced electromechanical response in thin-film polyurethane elastomers. Su, J.; Zhang, Q.M. // Applied Physics Letters;7/21/1997, Vol. 71 Issue 3, p386 

    Demonstrates that the large electrical-field-induced strain response observed in polyurethane elastomers is a thin-film effect. Advantages of polymeric materials; Development of high performance electroactive polymers for electrochemical applications; Role the charge injection on the enhanced...

  • On-demand hierarchical patterning with electric fields. Qiming Wang; Robinson, Dominick; Xuanhe Zhao // Applied Physics Letters;6/9/2014, Vol. 104 Issue 23, p1 

    We report a method to generate hierarchical topographical patterns on demand under the control of applied voltages. The method is implemented by harnessing the electro-creasing instability in multilayer elastomer films. The critical electric field for electro-creasing instability in a layer of...

  • Shear-induced adhesive failure of a rigid slab in contact with a thin confined film. Chaudhury, M. K.; Kim, K. H. // European Physical Journal E -- Soft Matter;Jun2007, Vol. 23 Issue 2, p175 

    A rigid-glass prism (square or rectangular base, rectangular cross-section) is sheared off a thin film of silicone elastomer bonded to a glass plate by applying a tangential force at various distances above the prism/elastomer interface. At a given tangential force, the prism starts to slide on...

  • Confinement-induced instability and adhesive failure between dissimilar thin elastic films. Chung, J. Y.; Kim, K. H.; Chaudhury, M. K.; Sarkar, J.; Sharma, A. // European Physical Journal E -- Soft Matter;May2006, Vol. 20 Issue 1, p47 

    When two thin soft elastomeric films are separated from each other, an elastic instability develops at the interface. Although similar instability develops for the case of a soft film separating from a rigid adherent, there are important differences in the two cases. For the single-film case,...

  • Surface electrical conductivity in ultrathin single-wall carbon nanotube/polymer nanocomposite films. Bliznyuk, Valery; Singamaneni, Srikanth; Kattumenu, Ramesh; Atashbar, Massood // Applied Physics Letters;4/17/2006, Vol. 88 Issue 16, p164101 

    Ultrathin composite films of single-wall carbon nanotubes dispersed in polymer matrices of polystyrene and polyurethane elastomers with the thickness ranging from 100 nm to 3 μm were formed by dip-coating procedure. Electrical conductivity in plane of the film was measured with application of...

  • Microchannel molding: A soft lithography-inspired approach to micrometer-scale patterning. Martin, Christopher R.; Aksay, Ilhan A. // Journal of Materials Research;Aug2005, Vol. 20 Issue 8, p1995 

    A new patterning technique for the deposition of sol-gels and chemical solution precursors was developed to address some of the limitations of soft lithography approaches. When using micromolding in capillaries to pattern precursors that exhibit large amounts of shrinkage during drying,...

  • Stretchability of thin metal films on elastomer substrates. Teng Li; Zhenyu Huang; Suo, Z.; Lacour, Stéphanie P.; Wagner, Sigurd // Applied Physics Letters;10/18/2004, Vol. 85 Issue 16, p3435 

    Many flexible electronic surfaces comprise inorganic films on organic substrates. Mechanical failure of such integrated structures of stiff and compliant materials poses a significant challenge. This letter studies the stretchability of metal films on elastomer substrates. Our experiment shows...

  • Dielectric elastomer actuators with elastomeric electrodes. Bozlar, Michael; Punckt, Christian; Korkut, Sibel; Zhu, Jian; Chiang Foo, Choon; Suo, Zhigang; Aksay, Ilhan A. // Applied Physics Letters;8/27/2012, Vol. 101 Issue 9, p091907 

    For many applications of dielectric elastomer actuators, it is desirable to replace the carbon-grease electrodes with stretchable, solid-state electrodes. Here, we attach thin layers of a conducting silicone elastomer to prestrained films of an acrylic dielectric elastomer and achieve...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics