In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 33, No. 8R ( 1994-08-01), p. 4718-
Abstract:
Using an atomic force microscope, we measured the forces between a Si 3 N 4 tip and monolayers with different polar functional groups ( –NH 2 , –COOH, –CONH 2 , and –OH) prepared by the Langmuir-Blodgett method while varying the pH value of aqueous solutions. The obtained force vs distance curves were related to the surface charges of the tip and the dissociation of the functional groups from the pH dependency, and the charged state of functional groups could thus be discerned. In addition, the electrostatic origin of the force has been confirmed assuming constant potentials on both surfaces.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.33.4718
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1994
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7