Microscale Hydrodynamic Cloaking and Shielding via Electro-Osmosis

被引：39

作者：

Boyko, Evgeniy ^{[1
,4
]}

Bacheva, Vesna ^{[1
,2
]}

Eigenbrod, Michael ^{[3
]}

Paratore, Federico ^{[2
]}

Gat, Amir D. ^{[1
]}

Hardt, Steffen ^{[3
]}

Bercovici, Moran ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Fac Mech Engn, IL-3200003 Haifa, Israel

[2] IBM Res Europe, Saumerstr 4, CH-8803 Ruschlikon, Switzerland

[3] Tech Univ Darmstadt, Dept Mech Engn, D-64287 Darmstadt, Germany

[4] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 126卷 / 18期

基金：

瑞士国家科学基金会; 欧洲研究理事会;

关键词：

Electrolysis; -; Electroosmosis; Hydrodynamics;

D O I：

10.1103/PhysRevLett.126.184502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate theoretically and experimentally that injection of momentum in a region surrounding an object in microscale flow can yield both "cloaking" conditions, where the flow field outside the cloaking region is unaffected by the object, and "shielding" conditions, where the hydrodynamic forces on the object are eliminated. Using field-effect electro-osmosis as a mechanism for injection of momentum, we present a theoretical framework and analytical solutions for a range of geometrical shapes, validate these both numerically and experimentally, and demonstrate the ability to dynamically switch between the different states.

引用

页数：7

共 47 条

[1] ELCTROOSMOSIS ON INHOMOGENEOUSLY CHARGED SURFACES [J].

AJDARI, A .

PHYSICAL REVIEW LETTERS, 1995, 75 (04) :755-758

[2] Generation of transverse fluid currents and forces by an electric field: Electro-osmosis on charge-modulated and undulated surfaces [J].

Ajdari, A .

PHYSICAL REVIEW E, 1996, 53 (05) :4996-5005

[3] Achieving transparency with plasmonic and metamaterial coatings -: art. no. 016623 [J].

Alù, A ;

Engheta, N .

PHYSICAL REVIEW E, 2005, 72 (01)

[4] Mantle cloak: Invisibility induced by a surface [J].

Alu, Andrea .

PHYSICAL REVIEW B, 2009, 80 (24)

[5]

Boyadjian O., ARXIV201209931

[6] Flow patterning in Hele-Shaw configurations using non-uniform electro-osmotic slip [J].

Boyko, Evgeniy ;

Rubin, Shimon ;

Gat, Amir D. ;

Bercovici, Moran .

PHYSICS OF FLUIDS, 2015, 27 (10)

[7] THE STOKES RESISTANCE OF A SLIGHTLY DEFORMED SPHERE [J].

BRENNER, H .

CHEMICAL ENGINEERING SCIENCE, 1964, 19 (08) :519-539

[8]

Bruus H., 2008, Theoretical Microfluidics

[9] Mechanical cloak design by direct lattice transformation [J].

Buekmann, Tiemo ;

Kadic, Muamer ;

Schittny, Robert ;

Wegener, Martin .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2015, 112 (16) :4930-4934

[10]

Chen HY, 2010, NAT MATER, V9, P387, DOI [10.1038/nmat2743, 10.1038/NMAT2743]

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