PMID: 15244289Jul 13, 2004Paper

Directional scholte wave generation and detection using interdigital capacitive micromachined ultrasonic transducers

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Jeff McLean, F Levent Degertekin

Abstract

Directional generation and detection of Scholte waves and other guided modes in liquids and microfluidic channels by capacitive micromachined ultrasonic transducers (cMUTs) is reported. An interdigital transducer structure along with a phased-excitation scheme is used to enhance the directionality of Scholte interface waves in microfluidic environments. Finite element models are developed to predict the performance of the devices in both fluid half-spaces and microchannels. Experiments on the interdigital cMUTs show that a five-finger-pair device in a water half-space has 12 dB of directionality in generating Scholte waves at the design frequency of 10 MHz. A 10-finger device operating at 10 MHz in a water-filled microchannel has 13.4 dB of directionality. These directionality figures agree well with the modeling results. Using the results of the finite element model of a cMUT in a fluid half-space, it was determined that 41% of the acoustic power radiated into the fluid is contained in the Scholte wave propagating in the desired lateral direction. Transducers are demonstrated to perform bidirectional pumping in fluid channels with input power levels in the milliwatt range. Interdigital cMUTs fabricated using low temperature pr...Continue Reading

References

May 31, 2001·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·X JinB T Khuri-Yakub
Sep 27, 2002·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Yongrae Roh, Butrus T Khuri-Yakub
Oct 17, 2003·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Mohammed H BadiButrus T Khuri-Yakub
Feb 5, 2008·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·I LadabaumB T Khuri-Yakub

❮ Previous
Next ❯

Citations

Dec 5, 2014·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Abdullah AtalarH Kağan Oğuz
Jun 22, 2012·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Gokce GurunF Levent Degertekin
Nov 7, 2008·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Serena H WongButrus T Khuri-Yakub
Mar 15, 2006·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Rasim O GuldikenF Levent Degertekin

❮ Previous
Next ❯

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Baris BayramButrus T Khuri-Yakub
The Journal of the Acoustical Society of America
Alessandro CarontiMassimo Pappalardo
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Neal A HallF Levent Degertekin
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Mohammed H BadiButrus T Khuri-Yakub
© 2022 Meta ULC. All rights reserved