中国物理B ›› 2012, Vol. 21 ›› Issue (7): 76104-076104.doi: 10.1088/1674-1056/21/7/076104
• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇 下一篇
何进a, 苏艳梅b, 马玉涛b, 陈沁b, 王若楠b, 叶韵b, 马勇b, 梁海浪b
He Jin(何进)a)†, Su Yan-Mei(苏艳梅)b), Ma Yu-Tao (马玉涛)b), Chen Qin(陈沁)b), Wang Ruo-Nan(王若楠) b), Ye Yun(叶韵)b), Ma Yong(马勇) b), and Liang Hai-Lang(梁海浪)b)
摘要: In this paper we report on a study of the CMOS image sensor detection of the DNA based on the self-assembled nano-metallic particles, which are selectively deposited on the surface of passive image sensor. The nano-metallic particles block the optical radiation in the visible spectrum of ordinary light source effectively. When such a technical method is applied to the DNA detection, the requirement for special UV light source in the most popular fluorescence is eliminated. The DNA detection methodology is tested on a CMOS sensor chip fabricated using a standard 0.5 μm CMOS process. It is demonstrated that the approach is highly selective to detecting even signal-base mismatched DNA target with extremely-low-concentration DNA sample down to 10 pM under ordinary light source.
中图分类号: (Semiconductors)