B1: Taufhik Hossain Tonmoy
My research interests include micro-/nanofabrication and the development of various sensing platforms for biomedical applications. In project B1, we investigate the introduction of bio-functionalized plasmonic nanoparticles on to field effect transistor (FET)-based sensors and explore the possibility of enhancing the signals. Such devices could become a game-changer in early diagnosis of diseases where ultra-low concentrations of biomarkers need to be detected.
Supervisors: Artur Erbe, Larysa Baraban, Andreas Fery
Early diagnosis of diseases is of utmost importance. For example, cancer patients have drastically worse outcomes when diagnosed at later stages. Furthermore, certain biomarkers require very sensitive devices to detect their ultra-low concentrations. Field Effect Transistor (FET)-based biosensors not only provide detection of ultra-low concentrations of analytes along with fast response, but furthermore add the possibility for miniaturization, thereby leading to portability.
We investigate the introduction of bio-functionalized plasmonic nanoparticles to FET-based sensors and explore the possibility of enhancing the signals and/or sensitivity of these devices. Once illuminated by light, excited plasmons contribute to the modification of the surface potential at the FET's channel and to the modulation of the conductance of the sensor via optical gating. We expect this phenomenon to enhance the signals obtained from a binding event.
|10/2019 - 07/2022||
Master in Nanoelectronic Systems