Femtonewton Force Sensing with Optically Trapped Nanotubes

We extract the distribution of both center-of-mass and angular fluctuations from three-dimensional tracking of optically trapped nanotubes. We measure the optical force and torque constants from autocorrelation and cross-correlation of the tracking signals. This allows us to isolate the angular Brow...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Nano letters 2008-10, Vol.8 (10), p.3211-3216
Hauptverfasser:	Maragò, O. M, Jones, P. H, Bonaccorso, F, Scardaci, V, Gucciardi, P. G, Rozhin, A. G, Ferrari, A. C
Format:	Artikel
Sprache:	eng
Schlagworte:	Biotechnology - methods Cross-disciplinary physics: materials science rheology Exact sciences and technology General equipment and techniques Instruments, apparatus, components and techniques common to several branches of physics and astronomy Materials science Materials Testing Mechanics Microfluidics - methods Micromanipulation - instrumentation Microscopy, Atomic Force - methods Models, Statistical Nanoscale materials and structures: fabrication and characterization Nanotechnology - methods Nanotubes Optical Tweezers Physics Physics - methods Sensors (chemical, optical, electrical, movement, gas, etc.) remote sensing
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	We extract the distribution of both center-of-mass and angular fluctuations from three-dimensional tracking of optically trapped nanotubes. We measure the optical force and torque constants from autocorrelation and cross-correlation of the tracking signals. This allows us to isolate the angular Brownian motion. We demonstrate that nanotubes enable nanometer spatial and femtonewton force resolution in photonic force microscopy, the smallest to date. This has wide implications in nanotechnology, biotechnology, nanofluidics, and material science.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl8015413