Hollow Atomic Force Microscopy Cantilevers with Nanoscale Wall Thicknesses. 2021

Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA, 19104, USA.

In atomic force microscopy, the cantilever probe is a critical component whose properties determine the resolution and speed at which images with nanoscale resolution can be obtained. Traditional cantilevers, which have moderate resonant frequencies and high quality factors, have relatively long response times and low bandwidths. In addition, cantilevers can be easily damaged by excessive deformation, and tips can be damaged by wear, requiring them to be replaced frequently. To address these issues, new cantilever probes that have hollow cross-sections and walls of nanoscale thicknesses made of alumina deposited by atomic layer deposition are introduced. It is demonstrated that the probes exhibit spring constants up to ≈100 times lower and bandwidths up to ≈50 times higher in air than their typical solid counterparts, allowing them to react to topography changes more quickly. Moreover, it is shown that the enhanced robustness of the hollow cantilevers enables them to withstand large bending displacements more readily and to be more resistant to tip wear.

UI MeSH Term Description Entries
D018625 Microscopy, Atomic Force A type of scanning probe microscopy in which a probe systematically rides across the surface of a sample being scanned in a raster pattern. The vertical position is recorded as a spring attached to the probe rises and falls in response to peaks and valleys on the surface. These deflections produce a topographic map of the sample. Atomic Force Microscopy,Force Microscopy,Scanning Force Microscopy,Atomic Force Microscopies,Force Microscopies,Force Microscopies, Scanning,Force Microscopy, Scanning,Microscopies, Atomic Force,Microscopies, Force,Microscopies, Scanning Force,Microscopy, Force,Microscopy, Scanning Force,Scanning Force Microscopies

Related Publications

Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
July 2012, Nano letters,
Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
July 2011, Ultramicroscopy,
Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
January 1997, IEEE engineering in medicine and biology magazine : the quarterly magazine of the Engineering in Medicine & Biology Society,
Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
May 2024, Nanomaterials (Basel, Switzerland),
Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
February 2015, Nanoscale,
Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
August 2004, Ultramicroscopy,
Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
December 2019, Cell surface (Amsterdam, Netherlands),
Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
December 2015, Physical review letters,
Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
October 2017, The Review of scientific instruments,
Wujoon Cha, and Matthew F Campbell, and Kathryn Hasz, and Samuel M Nicaise, and Drew E Lilley, and Takaaki Sato, and Robert W Carpick, and Igor Bargatin
July 2007, Langmuir : the ACS journal of surfaces and colloids,
Copied contents to your clipboard!