Tampere University of Technology

TUTCRIS Research Portal

Growth of immobilized DNA by polymerase: Bridging nanoelectrodes with individual dsDNA molecules

Research output: Contribution to journalArticleScientificpeer-review


Original languageEnglish
Pages (from-to)3788-3792
Number of pages5
Issue number9
Publication statusPublished - Sep 2011
Publication typeA1 Journal article-refereed


We present a method for controlled connection of gold electrodes with dsDNA molecules (locally on a chip) by utilizing polymerase to elongate single-stranded DNA primers attached to the electrodes. Thiol-modified oligonucleotides are directed and immobilized to nanoscale electrodes by means of dielectrophoretic trapping, and extended in a procedure mimicking PCR, finally forming a complete dsDNA molecule bridging the gap between the electrodes. The technique opens up opportunities for building from the bottom-up, for detection and sensing applications, and also for molecular electronics.

ASJC Scopus subject areas