Sadayuki Ueha
Overview
Explore the profile of Sadayuki Ueha including associated specialties, affiliations and a list of published articles.
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Articles
17
Citations
6
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Recent Articles
1.
Nakazawa M, Tabaru M, Aoyagi T, Nakamura K, Ueha S
IEEE Trans Ultrason Ferroelectr Freq Control
. 2013 Oct;
60(10):2175-88.
PMID: 24081266
In this paper, we present a polyurea transducer that works at 100 MHz under water. The transducer was designed using an equivalent circuit model so that an aluminum (top)-polyurea-aluminum (bottom)-polyimide...
2.
Nakazawa M, Aoyagi T, Tabaru M, Nakamura K, Ueha S
Ultrasonics
. 2013 Sep;
54(2):526-36.
PMID: 24035608
In this paper, we present the transmission characteristics of a polyurea ultrasonic transducer operating in water. In this study, we used a polyurea transducer with fundamental resonance at approximately 30...
3.
Aoyagi T, Nakazawa M, Tabaru M, Nakamura K, Ueha S
IEEE Trans Ultrason Ferroelectr Freq Control
. 2009 Aug;
56(8):1761-8.
PMID: 19686992
This paper presents the novel measurement method of the surface acoustic wave velocity by the variable-line- focus transducer using a polyurea piezoelectric ultrasonic transducer. First, a multiresonant polyurea thin-film ultrasonic...
4.
Koyama D, Takei H, Nakamura K, Ueha S
IEEE Trans Ultrason Ferroelectr Freq Control
. 2008 Nov;
55(8):1823-30.
PMID: 18986924
A slider for a self-running standing wave-type, ultrasonically levitated, thin linear stage is discussed. The slider can be levitated and moved using acoustic radiation force and acoustic streaming. The slider...
5.
Koyama D, Nakamura K, Ueha S
IEEE Trans Ultrason Ferroelectr Freq Control
. 2007 Dec;
54(11):2337-43.
PMID: 18051168
Here we propose a self-running, ultrasonically-levitated sliding stage and investigate the levitation and propulsion characteristics of its stator. The stator consists of two aluminum beams and four PZT plates, which...
6.
Nakazawa M, Kosugi T, Nagatsuka H, Maezawa A, Nakamura K, Ueha S
IEEE Trans Ultrason Ferroelectr Freq Control
. 2007 Nov;
54(10):2165-74.
PMID: 18019256
Ultrasonic transducers using polyurea piezoelectric thin film are studied in this paper. Aromatic polyurea thin films, prepared by vapor deposition polymerization, have useful characteristics for use as an ultrasonic transducer....
7.
Koyama D, Ide T, Friend J, Nakamura K, Ueha S
IEEE Trans Ultrason Ferroelectr Freq Control
. 2007 Mar;
54(3):597-604.
PMID: 17375828
This paper presents a noncontact sliding table design and measurements of its performance via ultrasonic levitation. A slider placed atop two vibrating guide rails is levitated by an acoustic radiation...
8.
Friend J, Gouda Y, Nakamura K, Ueha S
IEEE Trans Ultrason Ferroelectr Freq Control
. 2006 Jul;
53(6):1160-8.
PMID: 16846148
A new linear microactuator, using bulk PZT and electro-discharge-machined components, generates a sliding velocity and force of 100 mm/s and 12 mN, respectively, in either direction, and a peak velocity...
9.
Hasegawa T, Nakamura K, Ueha S
Ultrasonics
. 2006 Jun;
44 Suppl 1:e575-9.
PMID: 16793104
It is known that if a pipe end is faced at a vibrating surface in liquid with a small gap, liquid is suctioned into the pipe. As a miniature configuration,...
10.
Gouda Y, Nakamura K, Ueha S
Ultrasonics
. 2006 Jun;
44 Suppl 1:e617-20.
PMID: 16793097
Multi-degree-of-freedom ultrasonic actuator has been studied for robot arms and multidimensional precision table and so on because of its simple structure, silent operation, and holding force. In this study, we...