TY  - JOUR
AB  - The intrinsic dc conductivity of long, individual lambda phage dsDNA molecules has been investigated by ultrasensitive low current-voltage-spectroscopy (IV) under ambient conditions and controlled low humidity inert gas atmosphere on microfabricated metal-insulator-metal gap structures. We found a strong dependence of the measured conductivity on the apparent humidity, which we attribute to capillary condensation of water to the immobilized DNA molecules, giving rise to additional ionic currents. Additional IV-spectroscopy experiments under controlled argon atmosphere always revealed a significant drop in electrical conductivity to 4 × 10 -15 AV -1 µm -1, indicating almost no considerable contribution of electrical long range charge transport.
DA  - 2004
DO  - 10.1016/j.jbiotec.2004.04.031
KW  - DNA conductivity
KW  - Current-voltage spectroscopy
KW  - Microstructures
LA  - eng
IS  - 1-2
M2  - 91
PY  - 2004
SN  - 0168-1656
SP  - 91-95
T2  - Journal of Biotechnology
TI  - Absence of intrinsic electric conductivity in single dsDNA molecules
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-17731258
Y2  - 2024-11-21T17:44:47
ER  -