scholarly journals Phase Behavior of Two-Dimensional Colloidal Systems in the Presence of Periodic Light Fields

2001 ◽  
Vol 86 (5) ◽  
pp. 930-933 ◽  
Author(s):  
C. Bechinger ◽  
M. Brunner ◽  
P. Leiderer
Keyword(s):  
Phase Behavior ◽  
Light Fields ◽  
Two Dimensional ◽  
Colloidal Systems

Observation of the Pinning-Induced Crystal-Hexatic-Glass Transition in Two-Dimensional Colloidal Suspensions

2021 ◽  
Vol 38 (10) ◽  
pp. 106101
Author(s):  
Xiaoyan Sun ◽  
Huaguang Wang ◽  
Hao Feng ◽  
Zexin Zhang ◽  
Yuqiang Ma
Keyword(s):  
Glass Transition ◽  
Colloidal Suspensions ◽  
Two Dimensional ◽  
Colloidal Systems ◽  
Fundamental Understanding ◽  
New Strategy ◽  
Glassy Materials ◽  
Colloidal Glass ◽  
Orientational Correlation

Identification of the glass formation process in various conditions is of importance for fundamental understanding of the mechanism of glass transitions as well as for developments and applications of glassy materials. We investigate the role of pinning in driving the transformation of crystal into glass in two-dimensional colloidal suspensions of monodisperse microspheres. The pinning is produced by immobilizing a fraction of microspheres on the substrate of sample cells where the mobile microspheres sediment. Structurally, the crystal-hexatic-glass transition occurs with increasing the number fraction of pinning ρ pinning, and the orientational correlation exhibits a change from quasi-long-range to short-range order at ρ pinning = 0.02. Interestingly, the dynamics shows a non-monotonic change with increasing the fraction of pinning. This is due to the competition between the disorder that enhances the dynamics and the pinning that hinders the particle motions. Our work highlights the important role of the pinning on the colloidal glass transition, which not only provides a new strategy to prevent crystallization forming glass, but also is helpful for understanding of the vitrification in colloidal systems.

scholarly journals Phase behavior of colloidal monolayers in quasiperiodic light fields

Soft Matter ◽  
2011 ◽  
Vol 7 (4) ◽  
pp. 1352-1357 ◽  
Author(s):  
Jules Mikhael ◽  
Günter Gera ◽  
Thomas Bohlein ◽  
Clemens Bechinger
Keyword(s):  
Phase Behavior ◽  
Light Fields

scholarly journals Reentrant melting of two-dimensional colloidal systems

2000 ◽  
Vol 12 (8A) ◽  
pp. A425-A430 ◽  
Author(s):  
C Bechinger ◽  
Q H Wei ◽  
P Leiderer
Keyword(s):  
Two Dimensional ◽  
Colloidal Systems

scholarly journals Anomalous Long-Range Attraction in Colloidal Binary Mixtures at Fluid–Fluid Interfaces

2020 ◽  
Vol 4 (3) ◽  
pp. 36
Author(s):  
Zonglin Yi ◽  
To Ngai
Keyword(s):  
Long Range ◽  
Colloidal Particles ◽  
Experimental Result ◽  
Colloidal System ◽  
Fluid Interfaces ◽  
Water Interface ◽  
Two Dimensional ◽  
Colloidal Systems ◽  
Oil Water ◽  
Theoretical Side

The properties of binary colloidal systems have gained the interest of researchers because they have much richer structures than their one-component counterpart. Continuing efforts are being made on the theoretical side on binary colloidal systems, while many issues remained unsolved for the lack of solid experimental supports, especially for study in the field of two-dimensional (2D) binary colloids system. Oil–water interfaces can serve as a good stringent 2D confinement for colloidal particles and can avoid anomalous problems caused by the quasi-two-dimensional environment in previous experimental reports. In this work, we conduct experimental research of binary colloids system in an oil–water interface to revisit theoretical predication. We measure an ultra-long-range attraction and discuss the possible mechanism of this attraction by comparing the experimental result with existing model and theory. This study could contribute more understanding of the binary colloidal system in both experimental aspects and theoretical aspects.

scholarly journals Phase Transitions in Two-Dimensional Colloidal Systems

Soft Matter ◽  
2014 ◽  
pp. 41-86 ◽  
Author(s):  
Hans-Hennig von Grünberg ◽  
Peter Keim ◽  
Georg Maret
Keyword(s):  
Phase Transitions ◽  
Two Dimensional ◽  
Colloidal Systems

Wolf effect of partially coherent light fields in two-dimensional curved space

2018 ◽  
Vol 97 (6) ◽  
Author(s):  
Chenni Xu ◽  
Adeel Abbas ◽  
Li-Gang Wang ◽  
Shi-Yao Zhu ◽  
M. Suhail Zubairy
Keyword(s):  
Light Fields ◽  
Two Dimensional ◽  
Coherent Light ◽  
Curved Space ◽  
Partially Coherent ◽  
Partially Coherent Light
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