Russian Academy of Sciences Institute of Mathematical Problems of Biology DNA-based nanoelectronics V.D. LAKHNO.

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Presentation transcript:

Russian Academy of Sciences Institute of Mathematical Problems of Biology DNA-based nanoelectronics V.D. LAKHNO

Potential application of DNA in nanoelectronics DNA nanowires DNA nanobiochips DNA nanomotors DNA posistors DNA tunneling diods DNA transistors DNA biosensors

Charge transfer in oligonucleotides Ruthenium – rhodium molecular complexes are used as donors and acceptors in experiments on electron transfer in DNA. The donor and the acceptor are linked by a covalent bond to a DNA fragment containing 15 nucleotide pairs.

Hole injection into DNA ( Giese et al experiments )

Electrical transport through DNA molecules. Direct measurement. D.Porath et al, Nature, 403, (2000), 635

DNA nanotechnologies The properties of DNA selfconstruction can be used for design of different structures (С.Dekker at al., Physics World, 2001)

Watson - Crick pairs of oscillators.

Holstein Hamiltonian

General approach to calculation of the mobility at high temperatures Motion equations for Motion equations for Holstein Hamiltonian: Holstein Hamiltonian: V.D.Lakhno, N.S.Fialko, JETP Letters, 78, 336, (2003).

Temperature dependence of Hole mobility in (PolyG / PolyC) 1 - band mobility ~ (T 0 / T) (2,3) 2 - LRP mobility cm 2 / V sec, cm 2 / V sec - hole mobility at T 0 = 300 K eV, sec -1, eV sec -1

The principle of biochip functioning

The measuring of current along the separated contour diagnoses its change after hybridization V. D. Lakhno, V. B. Sultanov. J. Chem. Theory Comput. 2007, 3, Nanobiochip

The calculation of conductance, where

The results of conductance calculation

Logical gate XOR v1v1v1v1 v2v2v2v2p11 0*0*0*0* V. D. Lakhno, V. B. Sultanov. Mathematical biology and bioinformatics, 2006, v.1 (1), pp

DNA-based electronic memory

Single-Molecule Conductance Measurements of Single- and Double-Stranded DNA Oligonucleotides ChemPhysChem v.7 n.1 pp H. van Zalinge*, D.J. Schiffrin*, A.D. Bates +, W. Haiss*, J. Ulstrup , R.J. Nichols* * Centre for Nanoscale Science, Chemistry Department, University of Liverpool, Unated Kingdom + School of Biological Science, University of Liverpool, Unated Kingdom  Department of Chemistry, Technical University of Denmark

Digital memory device based on tobacco mosaic virus conjugated with nanoparticles Nature v. 1 Oct. 2006, pp R.J. Tseng 1, CH. Tsai 2, L. Ma 1, J. Ouyang 1, C.S. Ozkan 3 Y. Yang 1 1 Department of Materials Science and Engineering, University of California_Los Angeles, USA 2 Department of Electrical Engineering, University of California_Riverside, USA 3 Department of Mechanical Engineering, University of California_Riverside, USA