Low-noise wideband ultrasound detection using polymer microring resonators

Sheng Wen Huang, Sung Liang Chen, Tao Ling, Adam Maxwell, Matthew O'Donnell, L. Jay Guo, Shai Ashkenazi

Research output: Contribution to journalArticlepeer-review

62 Scopus citations


Polymer microring resonators for low-noise, wideband ultrasound detection are presented. Using a nanoimprinting technique, we fabricated polymer microring resonators with a quality factor of 6000 resulting in high sensitivity to ultrasound. A noise-equivalent pressure of 0.23 kPa over 1-75 MHz and a detection bandwidth of over 90 MHz at -3 dB were measured. These results demonstrate the potential of polymer microring resonators for high-frequency ultrasound and photoacoustic imaging. For a typical photoacoustic imaging test case, the high sensitivity demonstrated in these devices would increase imaging depth by a factor of 3 compared to state-of-the-art polyvinylidene fluoride detectors.

Original languageEnglish (US)
Article number193509
JournalApplied Physics Letters
Issue number19
StatePublished - 2008

Bibliographical note

Funding Information:
Support from NIH Grant No. EB007619-01A1 and NSF Grant No. CBET 0730446 are gratefully acknowledged.


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