Header logo is


2019


The acoustic hologram and particle manipulation with structured acoustic fields
The acoustic hologram and particle manipulation with structured acoustic fields

Melde, K.

Karlsruher Institut für Technologie (KIT), May 2019 (phdthesis)

Abstract
This thesis presents holograms as a novel approach to create arbitrary ultrasound fields. It is shown how any wavefront can simply be encoded in the thickness profile of a phase plate. Contemporary 3D-printers enable fabrication of structured surfaces with feature sizes corresponding to wavelengths of ultrasound up to 7.5 MHz in water—covering the majority of medical and industrial applications. The whole workflow for designing and creating acoustic holograms has been developed and is presented in this thesis. To reconstruct the encoded fields a single transducer element is sufficient. Arbitrary fields are demonstrated in transmission and reflection configurations in water and air and validated by extensive hydrophone scans. To complement these time-consuming measurements a new approach, based on thermography, is presented, which enables volumetric sound field scans in just a few seconds. Several original experiments demonstrate the advantages of using acoustic holograms for particle manipulation. Most notably, directed parallel assembly of microparticles in the shape of a projected acoustic image has been shown and extended to a fabrication method by fusing the particles in a polymerization reaction. Further, seemingly dynamic propulsion from a static hologram is demonstrated by controlling the phase gradient along a projected track. The necessary complexity to create ultrasound fields with set amplitude and phase distributions is easily managed using acoustic holograms. The acoustic hologram is a simple and cost-effective tool for shaping ultrasound fields with high-fidelity. It is expected to have an impact in many applications where ultrasound is employed.

pf

link (url) DOI [BibTex]

2019



no image
Ferromagnetic colloids in liquid crystal solvents

Zarubin, G.

Universität Stuttgart, Stuttgart, 2019 (phdthesis)

icm

link (url) DOI [BibTex]

link (url) DOI [BibTex]


no image
Fluctuating interface with a pinning potential

Pranjić, Daniel

Universität Stuttgart, Stuttgart, 2019 (mastersthesis)

icm

[BibTex]

[BibTex]


no image
Controlling pattern formation in the confined Schnakenberg model

Beyer, David Bernhard

Universität Stuttgart, Stuttgart, 2019 (mastersthesis)

icm

[BibTex]

[BibTex]


Dynamics of self-propelled colloids and their application as active matter
Dynamics of self-propelled colloids and their application as active matter

Choudhury, U.

University of Groningen, Zernike Institute for Advanced Materials, 2019 (phdthesis)

Abstract
In this thesis, the behavior of active particles spanning from single particle dynamics to collective behavior of many particles is explored. Active colloids are out-of equilibrium systems that have been studied extensively over the past 15 years. This thesis addresses several phenomena that arise in the field of active colloids.

pf

link (url) [BibTex]

link (url) [BibTex]


no image
Interfaces in fluids of ionic liquid crystals

Bartsch, H.

Universität Stuttgart, Stuttgart, 2019 (phdthesis)

icm

link (url) DOI [BibTex]

link (url) DOI [BibTex]

2014


no image
Wetting phenomena in electrolyte solutions

Ibagon, I.

Universität Stuttgart, Stuttgart, 2014 (phdthesis)

icm

link (url) [BibTex]

2014


link (url) [BibTex]


no image
Trajectory to trajectory fluctuations in first-passage phenomena in bounded domains

Mattos, Thiago G., Mejia-Monasterio, Carlos, Metzler, Ralf, Oshanin, Gleb, Schehr, G.

In First-passage phenomena and their applications, pages: 203-225, World Scientific Publishing, Singapore, 2014 (incollection)

icm

DOI [BibTex]

DOI [BibTex]


no image
Dynamik einer fast-kritischen binären Flüssigkeit in zwei Dimensionen

Maisch, J.

Universität Stuttgart, Stuttgart, 2014 (mastersthesis)

icm

[BibTex]

[BibTex]


no image
Brownsche Bewegung schraubenförmiger Nanoteilchen

Gehrmann, C.

Universität Stuttgart, Stuttgart, 2014 (mastersthesis)

icm

[BibTex]

[BibTex]


no image
Electromagnetic self-propulsion for small objects in the near field

Müller, Boris

Universität Stuttgart, Stuttgart, 2014 (mastersthesis)

icm

[BibTex]

[BibTex]


no image
Thermal and structural properties of dense ionic liquids

Bartsch, Hendrik

Universität Stuttgart, Stuttgart, 2014 (mastersthesis)

icm

[BibTex]

[BibTex]

2013


no image
Brownian motion of optically trapped ellipsoids

Dibak, Manuel

Universität Stuttgart, Stuttgart, 2013 (mastersthesis)

icm

[BibTex]

2013


[BibTex]


no image
Phase behavior of colloidal suspensions with critical solvents

Mohry, T. F.

Universität Stuttgart, Stuttgart, 2013 (phdthesis)

icm

link (url) [BibTex]

link (url) [BibTex]


no image
Dynamics of nanodroplets on structured surfaces

Rauscher, M.

In Nanodroplets, 18, pages: 143-167, Lecture Notes in Nanoscale Science and Technology, Springer, New York, 2013 (incollection)

Abstract
Editors:Zhiming M. Wang

icm

DOI [BibTex]

DOI [BibTex]


no image
Zweidimensionale Monte-Carlo-Gittersimulationen im muVT- und NpT-Ensemble

Kirn, Kai Ludwig

Universität Stuttgart, Stuttgart, 2013 (mastersthesis)

icm

[BibTex]

[BibTex]


no image
Wetting Phenomena on the Nanometer Scale

Rauscher, M., Dietrich, S., Napiórkowski, M.

In Nanoscale Liquid Interfaces - Wetting, Patterning and Force Microscopy at the Molecular Scale, pages: 83-154, Pan Stanford Publishing Pte. Ltd., Singapore, 2013 (incollection)

icm

DOI [BibTex]

DOI [BibTex]


no image
Permittivity of an inhomogeneous dipolar lattice fluid

Schütz, Christian

Universität Stuttgart, Stuttgart, 2013 (mastersthesis)

icm

[BibTex]

[BibTex]

2010


no image
Nanofluidics of thin liquid films

Rauscher, M., Dietrich, S.

In Handbook of Nanophysics, Principles and Methods, 1, pages: 11-1-11-23, Handbook of Nanophysics, CRC Press, Boca Raton, 2010 (incollection)

icm

[BibTex]

2010


[BibTex]


no image
Dynamics of complex fluids at liquid-solid interfaces

Almenar Egea, L.

Universität Stuttgart, Stuttgart, 2010 (phdthesis)

icm

link (url) [BibTex]

link (url) [BibTex]


no image
Nanotropfen an Stufen

Maier, D.

Universität Stuttgart, Stuttgart, 2010 (mastersthesis)

icm

[BibTex]

[BibTex]


no image
Untersuchung der kritischen Adsorption an kolloidalen Teilchen mit Hilfe von Streutechniken

Slupina, C.

Universität Stuttgart, Stuttgart, 2010 (mastersthesis)

icm

[BibTex]

[BibTex]


no image
Dynamics of nanoscopic capillary waves

Mecke, K., Falk, K., Rauscher, M.

In Nonlinear Dynamics of Nanosystems, pages: 121-142, Wiley-VCH, Berlin, 2010 (incollection)

icm

DOI [BibTex]

DOI [BibTex]


no image
Critical Casimir interaction between a cylindrical particle and a chemically structured substrate

Labbe-Laurent, M.

Universität Stuttgart, Stuttgart, 2010 (mastersthesis)

icm

[BibTex]

[BibTex]


no image
Capillary interactions between colloidal particles at curved fluid interfaces

Guzowski, J.

Universität Stuttgart, Stuttgart, 2010 (phdthesis)

icm

link (url) [BibTex]

link (url) [BibTex]

2007


no image
Inhomogeneous platelets and rod fluids

Harnau, L., Dietrich, S.

In Soft Matter, Vol. 3, pages: 156-311, Wiley-VCH, Weinheim, 2007 (incollection)

icm

[BibTex]

2007


[BibTex]


no image
Phase behavior and effective interactions in colloidal suspensions

Grodon, C.

Universität Stuttgart, Stuttgart, 2007 (phdthesis)

icm

link (url) [BibTex]

link (url) [BibTex]


no image
The effect of capillary forces on adhesion of biological and artificial attachment devices

De Souza, E. J.

Universität Stuttgart, Stuttgart, 2007 (phdthesis)

icm

link (url) [BibTex]

link (url) [BibTex]


no image
Brownian dynamics in near surface flows

Almenar Egea, L.

Universität Stuttgart, Stuttgart, 2007 (mastersthesis)

icm

[BibTex]

[BibTex]

2005


no image
Interplay between geometry and fluid properties

König, P.-M.

Universität Stuttgart, Stuttgart, 2005 (phdthesis)

icm

link (url) [BibTex]

2005


link (url) [BibTex]


no image
Molecular dynamics of wet granular media

Goll, C.

Universität Stuttgart, Stuttgart, 2005 (mastersthesis)

icm

[BibTex]

[BibTex]


no image
The Boolean Model: from Matheron till today

Stoyan, D., Mecke, K.

In Space, Structure and Randomness: contributions in honor of Georges Matheron in the fields of geostatistics, random sets, and mathematical morphology, 183, pages: 151-182, Lecture Notes in Statistics, Springer, New York, 2005 (incollection)

icm

[BibTex]

[BibTex]


no image
Grenzflächenfluktuationen binärer Flüssigkeiten

Hiester, T.

Universität Stuttgart, Stuttgart, 2005 (phdthesis)

icm

link (url) [BibTex]

link (url) [BibTex]

2003


no image
Coexisting Phases in Binary Platelet Mixtures

Bier, M.

Universität Stuttgart, Stuttgart, 2003 (mastersthesis)

icm

[BibTex]

2003


[BibTex]


no image
Capillary forces between structured substrates

De Souza, E. J.

Universität Stuttgart, Stuttgart, 2003 (mastersthesis)

icm

[BibTex]

[BibTex]


no image
Statistical physics of stochastic geometries

Brodatzki, U.

Universität Wuppertal, Wuppertal, 2003 (phdthesis)

icm

[BibTex]

[BibTex]


no image
Colloidal Particles in Critical Fluids

Schlesener, F.

Universität Stuttgart, Stuttgart, 2003 (phdthesis)

icm

[BibTex]

[BibTex]


no image
Diffusion in quasicrystals

Mehrer, H., Galler, R., Frank, W., Blüher, R., Strohm, A.

In Quasicrystals - Structure and Physical Properties, pages: 312-337, Wiley-VCH, Weinheim, 2003 (incollection)

icm

[BibTex]

[BibTex]


no image
Structure and Solvation Forces in Binary Hard-Sphere Mixtures

Grodon, C.

Universität Stuttgart, Stuttgart, 2003 (mastersthesis)

icm

[BibTex]

[BibTex]