There is a lot of research about field effect transistors as biological sensors. However, I cannot find a single commercial supplier. I am looking for naked chip (with graphene, SiNW, CNTs...) that I could functionalize with my molecules of interest, in order to test my upstream biochemical strategy independently of the electronic readout. One problem at a time.
Would anyone know where to find chips with a reasonably consistent quality? Sigma has some graphene FETs, but the manufacturer is unresponsive and I really need technical expertise on the product I'll be using.
I guess no company sells the chips so far, since there is no way to standardize the performance in order to sell. Your choice is then is either to collaborate (and many groups do fabricate the GFETs in a large extent), or to fabricate them yourself :)
I am making one based on semiconducting oxide. Its electrical signal is very good but we are only at the stage of surface chemistry. So not ready to sell yet. We have to see the biosensing performance first. But maybe after I complete the project we can collaborate. Dmitry is right about standardizing the device performance of the device. Until we can calibrate signals across chips, commercialization is still being held up.
graphene FETs
https://www.nanomedicaldiagnostics.com/
I'm using them actually and they still need some attention, but overall, they are pretty okay.
Cheers,
Marcin
Actually it seems that graphenea has launched a pilot production of GFETs too: https://gfet.graphenea.com/
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