Localized Plasmonic Heating for Single-Molecule DNA Rupture Measurements in Optical Tweezers
- The Ohio State Univ., Columbus, OH (United States); The Ohio State University
- The Ohio State Univ., Columbus, OH (United States)
To date, studies on the thermodynamic and kinetic processes that underlie biological function and nanomachine actuation in biological- and biology-inspired molecular constructs have primarily focused on photothermal heating of ensemble systems, highlighting the need for probes that are localized within the molecular construct and capable of resolving single-molecule response. Here we present an experimental demonstration of wavelength-selective, localized heating at the single-molecule level using the surface plasmon resonance of a 15 nm gold nanoparticle (AuNP). Our approach is compatible with force-spectroscopy measurements and can be applied to studies of the single-molecule thermodynamic properties of DNA origami nanomachines as well as biomolecular complexes. We further demonstrate wavelength selectivity and establish the temperature dependence of the reaction coordinate for base-pair disruption in the shear-rupture geometry, demonstrating the utility and flexibility of this approach for both fundamental studies of local (nanometer-scale) temperature gradients and rapid and multiplexed nanomachine actuation.
- Research Organization:
- The Ohio State Univ., Columbus, OH (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0017270
- OSTI ID:
- 2557985
- Journal Information:
- Nano Letters, Journal Name: Nano Letters Journal Issue: 10 Vol. 24; ISSN 1530-6984
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hierarchical Assembly of Plasmonic Nanostructures using Virus Capsid Scaffolds on DNA Origami Tiles
Reciprocal Control of Hierarchical DNA Origami-Nanoparticle Assemblies
Hierarchical Assembly of Plasmonic Nanostructures using Virus Capsid Scaffolds and DNA Origami Tiles
Journal Article
·
Mon Jul 07 00:00:00 EDT 2014
· ACS Nano, 8(8):7896-7904
·
OSTI ID:1171891
Reciprocal Control of Hierarchical DNA Origami-Nanoparticle Assemblies
Journal Article
·
Tue Oct 29 20:00:00 EDT 2019
· Nano Letters
·
OSTI ID:1657521
Hierarchical Assembly of Plasmonic Nanostructures using Virus Capsid Scaffolds and DNA Origami Tiles
Journal Article
·
Tue Aug 26 00:00:00 EDT 2014
· ACS Nano
·
OSTI ID:1526973