% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Fu:838721, author = {Fu, Wangyang and Feng, Lingyan and Panaitov, Gregory and Kireev, Dmitry and Mayer, Dirk and Offenhäusser, Andreas and Krause, Hans-Joachim}, title = {{B}iosensing near the neutrality point of graphene}, journal = {Science advances}, volume = {3}, number = {10}, issn = {2375-2548}, address = {Washington, DC [u.a.]}, publisher = {Assoc.}, reportid = {FZJ-2017-07281}, pages = {e1701247 -}, year = {2017}, abstract = {Over the past decade, the richness of electronic properties of graphene has attracted enormous interest for electrically detecting chemical and biological species using this two-dimensional material. However, the creation of practical graphene electronic sensors greatly depends on our ability to understand and maintain a low level of electronic noise, the fundamental reason limiting the sensor resolution. Conventionally, to reach the largest sensing response, graphene transistors are operated at the point of maximum transconductance, where 1/f noise is found to be unfavorably high and poses a major limitation in any attempt to further improve the device sensitivity. We show that operating a graphene transistor in an ambipolar mode near its neutrality point can markedly reduce the 1/f noise in graphene. Remarkably, our data reveal that this reduction in the electronic noise is achieved with uncompromised sensing response of the graphene chips and thus significantly improving the signal-to-noise ratio—compared to that of a conventionally operated graphene transistor for conductance measurement. As a proof-of-concept demonstration of the usage of the aforementioned new sensing scheme to a broader range of biochemical sensing applications, we selected an HIV-related DNA hybridization as the test bed and achieved detections at picomolar concentrations.}, cin = {ICS-8 / JARA-FIT}, ddc = {500}, cid = {I:(DE-Juel1)ICS-8-20110106 / $I:(DE-82)080009_20140620$}, pnm = {552 - Engineering Cell Function (POF3-552) / 553 - Physical Basis of Diseases (POF3-553) / 523 - Controlling Configuration-Based Phenomena (POF3-523)}, pid = {G:(DE-HGF)POF3-552 / G:(DE-HGF)POF3-553 / G:(DE-HGF)POF3-523}, typ = {PUB:(DE-HGF)16}, pubmed = {pmid:29075669}, UT = {WOS:000417998700028}, doi = {10.1126/sciadv.1701247}, url = {https://juser.fz-juelich.de/record/838721}, }