Opto-thermal actuation of λ phase DNA suspended in a polymer based nano topography

摘要

Single isolated DNA molecules were immobilised in a nanopit array using entropy trapping. A single molecule could be addressed using optothermal actuation to create a local perturbation of the free energy and introduce a thermophoretic force. The optothermal actuation is based on absorption of near infrared laser beam in dye modified polymer layer.