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Proceedings Paper

Investigation of graphene-based nanoscale radiation sensitive materials
Author(s): Joshua A. Robinson; Maxwell Wetherington; Zachary Hughes; Michael LaBella III; Michael Bresnehan
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Paper Abstract

Current state-of-the-art nanotechnology offers multiple benefits for radiation sensing applications. These include the ability to incorporate nano-sized radiation indicators into widely used materials such as paint, corrosion-resistant coatings, and ceramics to create nano-composite materials that can be widely used in everyday life. Additionally, nanotechnology may lead to the development of ultra-low power, flexible detection systems that can be embedded in clothing or other systems. Graphene, a single layer of graphite, exhibits exceptional electronic and structural properties, and is being investigated for high-frequency devices and sensors. Previous work indicates that graphene-oxide (GO) - a derivative of graphene - exhibits luminescent properties that can be tailored based on chemistry; however, exploration of graphene-oxide's ability to provide a sufficient change in luminescent properties when exposed to gamma or neutron radiation has not been carried out. We investigate the mechanisms of radiation-induced chemical modifications and radiation damage induced shifts in luminescence in graphene-oxide materials to provide a fundamental foundation for further development of radiation sensitive detection architectures. Additionally, we investigate the integration of hexagonal boron nitride (hBN) with graphene-based devices to evaluate radiation induced conductivity in nanoscale devices. Importantly, we demonstrate the sensitivity of graphene transport properties to the presence of alpha particles, and discuss the successful integration of hBN with large area graphene electrodes as a means to provide the foundation for large-area nanoscale radiation sensors.

Paper Details

Date Published: 3 May 2012
PDF: 9 pages
Proc. SPIE 8373, Micro- and Nanotechnology Sensors, Systems, and Applications IV, 83730J (3 May 2012); doi: 10.1117/12.918617
Show Author Affiliations
Joshua A. Robinson, The Pennsylvania State Univ. (United States)
Maxwell Wetherington, The Pennsylvania State Univ. (United States)
Zachary Hughes, The Pennsylvania State Univ. (United States)
Michael LaBella III, The Pennsylvania State Univ. (United States)
Michael Bresnehan, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 8373:
Micro- and Nanotechnology Sensors, Systems, and Applications IV
Thomas George; M. Saif Islam; Achyut Dutta, Editor(s)

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