Nanoscale imaging of buried structures via scanning near-field ultrasound holography

被引:185
作者
Shekhawat, GS
Dravid, VP [1 ]
机构
[1] Northwestern Univ, Inst Nanotechnol, Evanston, IL 60208 USA
[2] Northwestern Univ, NUANCE Ctr, Evanston, IL 60208 USA
[3] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA
关键词
D O I
10.1126/science.1117694
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
A nondestructive imaging method, scanning near-field ultrasound holography (SNFUH), has been developed that provides depth information as well as spatial resolution at the 10- to 100-nanometer scale. In SNFUH, the phase and amplitude of the scattered specimen ultrasound wave, reflected in perturbation to the surface acoustic standing wave, are mapped with a scanning probe microscopy platform to provide nanoscale-resolution images of the internal substructure of diverse materials. We have used SNFUH to image buried nanostructures, to perform subsurface metrology in microelectronic structures, and to image malaria parasites in red blood cells.
引用
收藏
页码:89 / 92
页数:4
相关论文
共 31 条