J. Hamilton

Publications13
h-index8
Citations394
Highly Influential Citations8
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High frequency optoacoustic arrays using etalon detection
Two-dimensional phased arrays for high frequency (>30 MHz) ultrasonic imaging are difficult to construct using conventional piezoelectric technology. A promising alternative involves optical… Expand
  • 105
  • 2
Narrow strand YBCO Roebel cable for lowered AC loss
We have constructed test lengths of Roebel cable from wide strips of second generation YBCO wire. The strand width is 2mm to allow for lowered AC losses in comparison with standard HTS wires. Up to… Expand
  • 57
  • 2
  • PDF
Suppression of propagating second harmonic in ultrasound contrast imaging
Contrast agents, such as bubbles, are used in ultrasound to enhance backscatter from blood. To increase contrast between these agents and tissue, nonlinear methods such as harmonic imaging can be… Expand
  • 63
  • 1
High frequency ultrasound imaging using an active optical detector
Optical detection of ultrasound has numerous advantages over traditional piezoelectric methods. These systems offer noncontact inspection, rapid scanning capabilities, fine spatial sampling, and… Expand
  • 18
  • 1
Suppression of propagating second harmonic in non-linear imaging
Harmonic imaging can improve contrast between contrast agents and tissue when imaging microvasculature. However, the factor limiting contrast enhancement is harmonic signals generated by the medium… Expand
  • 4
  • 1
Optical arrays for high frequency ultrasound imaging
Dynamically focused and steered high frequency ultrasound imaging systems require arrays with fine element spacing, wide bandwidths and large apertures. However, these characteristics are difficult… Expand
  • 5
  • 1
High frequency ultrasound imaging with optical arrays
Dynamically focused and steered high frequency ultrasound imaging systems require arrays with fine element spacing, wide bandwidths, and large apertures. However, these characteristics are difficult… Expand
  • 73
STRETCHABLE MICRO-ELECTRODE ARRAY
This paper focuses on the design consideration, fabrication processes and preliminary testing of the stretchable micro-electrode array. We are developing an implantable, stretchable micro-electrode… Expand
  • 31
Modified Weighting Method for Forward-Looking Ring-Annular Arrays
TLDR
A synthetic phased, ring-annular array is presented that achieves a transmit-receive aperture and on-axis performance comparable to a full aperture disk array. Expand
  • 9
High frequency ultrasonic imaging using optoacoustic arrays
Optical generation and detection of ultrasound is a promising alternative to piezoelectricity for high frequency arrays. We have used the thermoelastic effect to produce high frequency, broadband… Expand
  • 5