IMAGING POWDERS WITH THE ATOMIC FORCE MICROSCOPE - FROM BIOMINERALS TO COMMERCIAL MATERIALS

被引:53
作者
FRIEDBACHER, G
HANSMA, PK
RAMLI, E
STUCKY, GD
机构
[1] UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106
[2] TECH UNIV VIENNA,INST ANALYT CHEM,A-1060 VIENNA,AUSTRIA
[3] UNIV CALIF SANTA BARBARA,DEPT CHEM,SANTA BARBARA,CA 93106
关键词
D O I
10.1126/science.253.5025.1261
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Atomically resolved images of pressed powder samples have been obtained with the atomic force microscope (AFM). The technique was successful in resolving the particle, domain, and atomic structure of pismo clam (Tivela stultorum) and sea urchin (Strongylocentrotus purpuratus) shells and of commercially available calcium carbonate (CaCO3) and strontium carbonate (SrCO3) powders. Grinding and subsequent pressing of the shells did not destroy the microstructure of these materials. The atomic-resolution imaging capabilities of AFM can be applied to polycrystalline samples by means of pressing powders with a grain size as small as 50 micrometers. These results illustrate that the AFM is a promising tool for material science and the study of biomineralization.
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收藏
页码:1261 / 1263
页数:3
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