Document Detail

Quartz tuning fork-based frequency modulation atomic force spectroscopy and microscopy with all digital phase-locked loop.
MedLine Citation:
PMID:  23206069     Owner:  NLM     Status:  In-Data-Review    
We present a platform for the quartz tuning fork (QTF)-based, frequency modulation atomic force microscopy (FM-AFM) system for quantitative study of the mechanical or topographical properties of nanoscale materials, such as the nano-sized water bridge formed between the quartz tip (∼100 nm curvature) and the mica substrate. A thermally stable, all digital phase-locked loop is used to detect the small frequency shift of the QTF signal resulting from the nanomaterial-mediated interactions. The proposed and demonstrated novel FM-AFM technique provides high experimental sensitivity in the measurement of the viscoelastic forces associated with the confined nano-water meniscus, short response time, and insensitivity to amplitude noise, which are essential for precision dynamic force spectroscopy and microscopy.
Sangmin An; Mun-Heon Hong; Jongwoo Kim; Soyoung Kwon; Kunyoung Lee; Manhee Lee; Wonho Jhe
Related Documents :
23962329 - The nature and limits of orientation and pattern processing supporting visuomotor contr...
18998119 - Breaking the flow of an action.
24917329 - Manipulation of visual biofeedback during gait with a time delayed adaptive virtual mir...
24554479 - Interactions between cues to visual motion in depth.
24215119 - Precision of jaw-closing movements for different jaw gaps.
25283449 - Droplet-based immunoassay on a 'sticky' nanofibrous surface for multiplexed and dual de...
3195059 - Reciprocity between luminance and dot density in the perception of brightness.
23448309 - Defensive gin-trap closure response of tenebrionid beetle, zophobas atratus, pupae.
6610149 - Cyclic renewal of whole pineal photoreceptor outer segments.
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Review of scientific instruments     Volume:  83     ISSN:  1089-7623     ISO Abbreviation:  Rev Sci Instrum     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-12-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0405571     Medline TA:  Rev Sci Instrum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  113705     Citation Subset:  IM    
Center for Nano-Liquid, Department of Physics and Astronomy, Seoul National University, Seoul 151-747, South Korea.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  High aspect ratio nanoneedle probes with an integrated electrode at the tip apex.
Next Document:  Integration of a broad beam ion source with a high-temperature x-ray diffraction vacuum chamber.