Employing graphene acoustoelectric switch by dual surface acoustic wave transducers

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/116821

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题名:	Employing graphene acoustoelectric switch by dual surface acoustic wave transducers
作者:	Ching-Ping Lee;Yu-Peng Hong;Man-Ting Shen;Chiu-Chun Tang;D. C. Ling;Yung-Fu Chen;Cen-Shawn Wu;Jeng-Chung Chen
关键词:	Graphene;Nanoscale device
日期:	2019-06-03
上传时间:	2019-06-06 12:10:15 (UTC+8)
出版者:	Nature Research
摘要:	We implement a logic switch by using a graphene acoustoelectric transducer at room temperature. We operate two pairs of inter-digital transducers (IDTs) to launch surface acoustic waves (SAWs) on a LiNbO3 substrate and utilize graphene as a channel material to sustain acoustoelectric current Iae induced by SAWs. By cooperatively tuning the input power on the IDTs, we can manipulate the propagation direction of Iae such that the measured Iae can be deliberately controlled to be positive, negative, or even zero. We define the zero-crossing Iae as Ioffae, and then demonstrate that Iae can be switched with a ratio Ionae/Ioffae∼104 at a rate up to few tens kHz. Our device with an accessible operation scheme provides a means to convert incoming acoustic waves modulated by digitized data sequence onto electric signals with frequency band suitable for digital audio modulation. Consequently, it could potentially open a route for developing graphene-based logic devices in large-scale integration electronics.
關聯:	Scientific Reports 9: 8235, p.1-9
显示于类别:	[物理學系暨研究所] 期刊論文

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