Park, Byeongho Dugasani, Sreekantha Reddy Cho, Youngho Oh, Juyeong Kim, Chulki Seo, Min Ah Kim, Jae Hun Jhon, Young Miin Woo, Deok Ha Lee, Seok Jun, Seong Chan Park, Sung Ha Lee, Taikjin 2024-01-19T11:39:37Z 2024-01-19T11:39:37Z 2022-03-01 2015-05 0277-786X https://pubs.kist.re.kr/handle/201004/115041 The current study describes metal ion sensing with double crossover DNAs (DX1 and DX2), artificially designed as a platform of doping. The sample for sensing is prepared by a facile annealing method to grow the DXs lattice on a silicon/silicon oxide. Adding and incubating metal ion solution with the sensor substrate into the micro-tube lead the optical property change. Photoluminescence (PL) is employed for detecting the concentration of metal ion in the specimen. We investigated PL emission for sensor application with the divalent copper. In the range from 400 to 650 nm, the PL features of samples provide significantly different peak positions with excitation and emission detection. Metal ions contribute to modify the optical characteristics of DX with structural and functional change, which results from the intercalation of them into hydrogen bonding positioned at the center of double helix. The PL intensity is decreased gradually after doping copper ion in the DX tile on the substrate. English SPIE-INT SOC OPTICAL ENGINEERING Metal ion sensing solution containing double crossover DNA Conference 10.1117/12.2184390 1 5th Asia-Pacific Optical Sensors Conference (APOS) 5th Asia-Pacific Optical Sensors Conference (APOS) US Jeju, SOUTH KOREA 2015-05-20 FIFTH ASIA-PACIFIC OPTICAL SENSORS CONFERENCE 000358602400115 2-s2.0-84939193981