摘要The polarizabilities of DNA in transverse direction and CdSe semiconductor quantum dots (QDs) deposited on mica surface are compared by means of electrostatic force microscopy (EFM). We observe clear EFM-phase shift over CdSe QDs, while no obvious signal on DNA is detected, suggesting that DNA molecules is an electrical insulator.
Abstract：The polarizabilities of DNA in transverse direction and CdSe semiconductor quantum dots (QDs) deposited on mica surface are compared by means of electrostatic force microscopy (EFM). We observe clear EFM-phase shift over CdSe QDs, while no obvious signal on DNA is detected, suggesting that DNA molecules is an electrical insulator.
ZHOU Xing-Fei;CUI Cheng-Yi;ZHANG Jin-Hai;LIU Jian-Hua;LIU Jing-Song. Comparative Study on Polarization of DNA and CdSe Quantum Dots[J]. 中国物理快报, 2010, 27(3): 38703-038703.
ZHOU Xing-Fei, CUI Cheng-Yi, ZHANG Jin-Hai, LIU Jian-Hua, LIU Jing-Song. Comparative Study on Polarization of DNA and CdSe Quantum Dots. Chin. Phys. Lett., 2010, 27(3): 38703-038703.
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2010, Vol. 27 
