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Listar Científica por autor "f0221807-e64d-4156-9191-b5b7e32c0b93"
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Walker, Ezekiel; Reyes Contreras, Delfino; Krokhin, Arkadii; Neogi, Arup
(Ultrasonics, 2014-02-12)
Bulk Poly(N-isopropylacrylamide) (PNIPAm) hydrogels are thermally responsive polymers that undergo a
sharp volumetric phase transition around its lower critical solution temperature of 33 C. The physical
characteristics ...
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Walker, Ezekiel; Reyes Contreras, Delfino; Mayorga Rojas, Miguel; Krokhin, Arkadii; Neogi, Arup
(SPIE, 2014-09)
Metamaterial acoustic lenses are acoustic devices based on phononic crystal structures that take advantage of negative or
near-zero indices of refraction. These unique properties arise due to either the antiparallel ...
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Walker, Ezekiel; Reyes Contreras, Delfino; Mayorga Rojas, Miguel; Krokhin, Arkadii; Neogi, Arup; Wang, Zhiming
(APPLIED PHYSICS LETTERS, 2014-09-07)
A tunable phononic crystal based ultrasonic filter was designed by stimulating the phase of the
polymeric material embedded in a periodic structure using infrared radiation. The acoustic filter
can be tuned remotely using ...