Journal
APPLIED PHYSICS LETTERS
Volume 111, Issue 24, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.5004040
Keywords
-
Categories
Funding
- Engineering and Physical Sciences Research Council
- UCL EPSRC Centre for Doctoral Training in Medical Imaging
- EPSRC [EP/L020262/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/L020262/1, 1343332] Funding Source: researchfish
Ask authors/readers for more resources
Complex diffraction limited acoustic fields can be generated from a single clement transducer using inexpensive 3-D printable acoustic kinoforms. This is extremely promising for a number of applications. However, the lack of ability to vary the field limits the potential use of this technology. In this work, this limitation is circumvented using multi-frequency acoustic kinoforms for which different acoustic fields arc encoded onto different driving frequencies. An optimisation approach based on random downhill binary search is introduced for the design of the multi-frequency kinoforms. This is applied to two test cases to demonstrate the technique: a kinoform designed to generate the numerals 1, 2, and 3 in the same plane but at different driving frequencies, and a kinoform designed to generate 3 sets of eight foci lying on a circle with a driving-frequency-dependent radius. Field measurements from these samples confirmed that multi-frequency acoustic kinoforms can be designed that switch between different arbitrary, pre-designed, acoustic field patterns in the target plane by changing the driving frequency. (c) 2017 Author(s).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available