Dynamic Speckle Holography

被引：0

作者：

Aime, S. ^{[1
,2
]}

Sabato, M. ^{[1
,3
]}

Xiao, L. ^{[4
]}

Weitz, D. A. ^{[1
,5
]}

机构：

[1] Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[2] PSL Univ, Mol Macromol Chem & Mat, CNRS, ESPCI Paris, 10 Rue Vauquelin, F-75005 Paris, France

[3] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

[4] China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing 102249, Peoples R China

[5] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 127卷 / 08期

关键词：

FLOW;

D O I：

10.1103/PhysRevLett.127.088003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We introduce dynamic speckle holography, a new technique that combines imaging and scattering to measure three-dimensional maps of displacements as small as ten nanometers over several centimeters, greatly extending the capabilities of traditional imaging systems. We attain this sensitivity by imaging speckle patterns of light collected at three scattering angles and measuring the decay in the temporal correlation due to local motion. We use dynamic speckle holography to measure the strain field of a colloidal gel undergoing fracture and establish the surprising role of internal tension in driving the fracture.

引用

页数：5

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