The graphene market continues to expand across a range of applications including consumer electronics, sensors, flexible wearables, supercapacitors, conductive inks and coatings. Thanks to graphene’s extraordinary electrical and mechanical properties a new generation of rapid, sensitive, low-cost bio/chemical sensors can be envisaged with impact upon healthcare, drug discovery, and bio/chemical detection applications.
Here we present the graphene-related R&D work at RISE Acreo with focus upon three objectives: graphene materials including wafer scale graphene-on-SiC, chemically synthesized graphene oxide (GO), reduced graphene oxide (RGO) and graphene quantum dots (or carbon nano particles); design and fabrication of the graphene devices, especially on their multiplexed sensing capability for enabling detection of multiple targets on a miniature integrated chip; and analysis of sensing mechanisms.
A few sensor examples will be described in this work, one is a graphene sensor to monitor glucose for diabetes. Another is a dopamine (DA) sensor utilizing graphene/ZnO-tetrapod hybrids for early diagnosis of Parkinson diseases (PD). DA is an important biomarker in the serum of patients with PD. The third one is a proton transmission detector utilizing 3D graphene onto SiC, which can initiate a new application for the detection of ionizing particle irradiation onto living cells. Finally, graphene sensors for forensic applications will be addressed; for instance, detection of amphetamine and TNT has been explored, aiming at rapid onsite crime scene analysis. In addition, a comprehensive analysis of the market and commercial opportunities of these devices will be presented.
Qin Wang, Mikael Karlsson, Wei Zhao, Elsa DeGeer, Olof Öberg, Ingemar Petermann, Per Björk, Björn Samel, Carl Strandqvist, Louise Elmlund, and Simon Dunne, "Graphene-based nano/micro structures leading to innovative bio/chemical sensors at RISE Acreo (Conference Presentation)," Proc. SPIE 10510, Frontiers in Biological Detection: From Nanosensors to Systems X, 105100R (Presented at SPIE BiOS: January 30, 2018; Published: 15 March 2018); https://doi.org/10.1117/12.2290146.5751641175001.
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Study of self-shadowing effect as a simple means to realize nanostructured thin films and layers with special attentions to birefringent obliquely deposited thin films and photo-luminescent porous silicon