Broadband and Ultrasensitive Graphene-Based Mechanical Wave Detector with Nanosecond Response Used for Biological Photoacoustic Imaging
| Autor: | Xiaoyi Zhu, Han Xue, Guohe Wang, Zongwen Li, Tiange Wu, Fei Xing |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry Graphene Terahertz radiation Detector Mice Nude Nanosecond law.invention Hindlimb Photoacoustic Techniques Mice Modulation law Optoelectronics Animals Humans General Materials Science Graphite Mechanical wave business Absorption (electromagnetic radiation) Ultrashort pulse Hair |
| Zdroj: | ACS applied materialsinterfaces. 12(15) |
| ISSN: | 1944-8252 |
| Popis: | Achieving broadband and sensitive mechanical wave detection with fast time response remains a great challenge. Here, we exploited the polarization-sensitive absorption characteristics and ultrafast photoelectric response of graphene to construct a broadband and ultrasensitive detector with a nanosecond response for mechanical wave detection. The unprecedented performance of the graphene-based detector allowed us to detect high-frequency mechanical waves over 100 MHz with a detection limit of 0.18 kPa. Moreover, we applied the detector in high-contrast photoacoustic imaging of human hairs and a mouse hindlimb to demonstrate its capability in detection of photoacoustic waves. This device could also find application in other areas such as THz detection and modulation. |
| Databáze: | OpenAIRE |
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