Comparative Study on Polarization of DNA and CdSe Quantum Dots
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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.
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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]. Chin. Phys. Lett., 2010, 27(3): 038703. DOI: 10.1088/0256-307X/27/3/038703
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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]. Chin. Phys. Lett., 2010, 27(3): 038703. DOI: 10.1088/0256-307X/27/3/038703
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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]. Chin. Phys. Lett., 2010, 27(3): 038703. DOI: 10.1088/0256-307X/27/3/038703
|
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[J]. Chin. Phys. Lett., 2010, 27(3): 038703. DOI: 10.1088/0256-307X/27/3/038703
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