자기조립 단분자막을 이용한 MOSFET형 단백질 센서의 제작 및 특성
Fabrication and Characteristics of MOSFET Protein Sensor Using Nano SAMs
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Abstract
Protein and gene detection have been growing importance in medical diagnostics. Field effect transistor (FET) - type biosensors have many advantages such as miniaturization, standardization, and mass-production. In this work, we have fabricated metal-oxide-semiconductor (MOS) FET that operates as molecular recognitions based electronic sensor. Measurements were taken with the devices under phosphate buffered saline solution. The drain current (ID) was decreased after forming self-assembled mono-layers (SAMs) used to capture the protein, which resulted from the negative charges of SAMs, and increased after forming protein by 11.5% at VG = 0 V due to the positive charges of protein.
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