Source:http://linkedlifedata.com/resource/pubmed/id/18238405
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
1
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| pubmed:dateCreated |
2008-2-1
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| pubmed:abstractText |
The combination of the electronic properties of semiconductor heterojunctions and the acoustic properties of piezoelectric materials yields very promising surface acoustic wave (SAW) hybrid systems. Quasi-monolithical integration of thin GaAs/InGaAs/AlGaAs-quantum well structures on LiNbO(3) SAW devices is achieved using the epitaxial lift-off (ELO) technique. The conductivity of the two-dimensional electron system in the quantum well, which can be controlled via field effect, modifies the velocity of the SAW. Due to the high electromechanical coupling coefficient of LiNbO(3) a large phase shift can be obtained. As an example for this new class of voltage-tunable single chip SAW devices, a voltage-controlled oscillator (VCO) is presented in which the output frequency can be tuned by an applied gate voltage.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:issn |
0885-3010
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
46
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| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
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| pubmed:pagination |
120-5
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| pubmed:year |
1999
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| pubmed:articleTitle |
Voltage controlled SAW velocity in GaAs/LiNbO(3)-hybrids.
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| pubmed:affiliation |
Sektion Physik der LMU, LS Kotthaus, D-80539 Miinchen, Germany. markus.rotter@physik.uni-muenchen
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| pubmed:publicationType |
Journal Article
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