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We describe the efficiency of deoxyribonucleic acid (DNA) immobilization onto a nanowire (NW) after employing various surface cleaning methods. From surface tension measurements and fluorescence microscopy images of the silicon oxide surfaces, we determined that the effectiveness of surface cleaning using an acetone/ethanol mixture was similar to that of piranha solution (sulfuric acid/hydrogen peroxide)...
We have developed a silicon nanowire field-effect transistor (NWFET) that allows deoxyribonucleic acid (DNA) biosensing. The nanowire (NW) was fabricated on a silicon-on-insulator wafer to provide effective ohmic contact. The NWFET sensor displayed n-channel depletion characteristics. To demonstrate the sensing capacity of the NWFET, we employed the BRAFV599E mutation gene, which correlates to the...
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