Presentation Information
[7p-N306-1]Fundamental Study on Property Control of DNA Thin Films Prepared via Laser Molecular Beam Deposition
Sui Liu1, Hakurin Liu1, Ensaku Shi2, Unhao You2, Tomohiro Murata3, Xuechen Shen3, Kosuke Minami4, Tomohiko Yamazaki4, Tomomasa Sato2, Hideomi Koinuma5, Katsuhiko Ariga4, 〇Nobuyuki Matsuki1,2 (1.Grad. Kanagawa Univ., 2.Kanagawa Univ., 3.The Univ. of Tokyo, 4.NIMS, 5.SCT Inc.)
Keywords:
DNA,Biosensor,Laser Molecular Beam Deposition
Deoxyribonucleic acid (DNA) has attracted significant attention as a next-generation nanofunctional material due to its unique properties derived from its well-defined molecular structure. Our research group has developed a method for fabricating DNA thin films using laser molecular beam deposition (LMBD), which allows for the hybrid stacking of inorganic and organic components. In this study, we performed a fundamental investigation on the effects of DNA fragmentation—achieved through ultrasonic treatment—on the structural and electrical properties of DNA thin films deposited by LMBD. By altering the base-pair length of the DNA source material through fragmentation, we observed a tendency for the resistivity of the resulting films to decrease as the average number of base pairs decreased. This result suggests that tuning the length of DNA strands may offer a promising approach to controlling the physical properties of DNA-based thin-film devices.