SWELLABLE COLLOIDAL PARTICLES ARE SWELL
2015.12.06 21:49
장소 | E6-2, #1323 |
---|---|
일시 | 2015/12/09, 2PM |
연사 | Arjun G. Yodh (University of Pennsylvania) |
SWELLABLE COLLOIDAL PARTICLES ARE SWELL
ABSTRACT
I will discuss soft matter experiments from my lab that explore fundamental questions about phase transition mechanisms and glasses. Briefly, soft materials deform easily when pushed, and some important examples include colloidal suspensions, emulsions, oil-water interfaces, polymer & surfactant solutions, liquid crystals, and mixtures thereof. Our recent work develops and takes advantage of a novel class of colloidal suspension composed of temperature-sensitive hydrogel particles; the temperature “knob” permits easy control of particle packing and simultaneous viewing by video microscopy [1]. These features, in turn, enable us to use colloidal crystals to answer fundamental questions about “how and where” crystal melting begins and about the mechanisms by which one crystal transforms to another during a solid-solid phase transition [2]. These features have also enabled us to critically explore open questions about disordered solids, e.g., how glasses rearrange internally when responding to mechanical stress [3]. After a broad introduction, I will describe these new experiments.
REFERENCES
[1] Yunker, P.J., Chen, K., Gratale, M.D., Lohr, M.A., Still, T., Yodh, A.G., Reports on
Progress in Physics 77, 056601 (Epub 2014).
[2] A.M. Alsayed, M.F. Islam, J. Zhang, P.J. Collings, A.G. Yodh, Science 309, 1207-1210 (2005); Y. Han, Y. Shokef, A. Alsayed, P. Yunker, T. C. Lubensky, A. G. Yodh, Nature 456,
898-903 (2008); Peng, Y., Wang, F., Wang, Z., Alsayed, A.M., Zhang, Z., Yodh, A.G., and
Han, Y., Nature Materials (Epub 2014).
[3] Chen, K., Ellenbroek, W.G., Zhang, Z.X., Chen, D.T.N., Yunker, P.J., Henkes, S., Brito, C., Dauchot, O., van Saarloos, W., Liu, A.J., and Yodh, A.G., Phys. Rev. Lett. 105, 025501 (2010); Chen, K., Manning, M.L., Yunker, P.J., Ellenbroek, W.G., Zhang, Z., Liu, A.J., and Yodh, A.G., Phys. Rev. Lett. 107, 108301 (2011); Still, T., Goodrich. C.P., Chen, K., Yunker, P.J., Schoenholz, S., Liu, A.J., and Yodh, A.G., Phys. Rev. E 89, (2014).
댓글 0
번호 | 일시 | 장소 | 연사 | 제목 |
---|---|---|---|---|
공지 | 2019/09/18 - 12/5 | Seminar Room #1323 | Prof. David Schuster and etc. | Fall 2019: Physics Seminar Serises |
공지 | 2019/09/02 - 12/09 | Seminar Room 1501 | 이호성 박사 (한국표준과학연구원) and etc. | Fall 2019: Physics Colloquium |
165 | Sep. 02(Fri) 4:00 PM | E6-2(1st fl) #1323 | Dr. Yong-Joo Doh, Department of Physics and Photon Science, GIST | Quantum Electrical Transport in Topological Insulator Nanowires |
164 | Sep. 02(Fri) 2:30 PM | E6-2(1st fl.), #1323 | Dr. Yong-Hyun Kim,Graduate School of Nanoscience and Technology, KAIST | Nanoscale Thermal Physics: Seebeck Effect and Nanoscale Friction |
163 | Jun 28, 14:00 | E6-2, #1322 | Dr. Bongjae Kim, Dr. Sooran Kim, Dr. Jeongwoon Hwang |
1st Research-exchange meeting of computational material physics
![]() |
162 | July 31(Wed.)/ 16:00 | E6-2, #1323 | Dr. Ivan Borzenets |
Features of ballistic superconducting graphene
![]() |
161 | Jun 24 (Mon) 11:00 | E6-2, #1323 | Dr. Henning Schomerus |
Topological photonic anomalies
![]() |
160 | July 25(Thur.),4:00PM | E6-2, #1323 | Prof.Bohm-Jung Yang |
Band topology of twisted bilayer graphene
![]() |
159 | 2015/12/11, 3:45PM | E6-2, #1323 | Dr. Ji Hun Sim (POSTECH) | Dynamical mean field theory studies on heavy fermion system |
158 | 2015/11/10, 4PM | E6-2, #1323 | Dr. Woosuk Bang (Physics division, Los Alamos National Laboratory) | Rapid heating of matter using high power lasers |
157 | 2015/11/19, 4PM | E6-2, #1323 | Dr. Daesu Lee (University of Wisconsin-Madison) | Emergent Collective Phenomena and Functions at Reduced Dimensions |
156 | 2015/12/11, 1:30PM | E6-2, #1323 | Dr. KwangYong Choi (Chung-Ang University) | Quantum spin liquid in the 1/3 depleted triangular lattice Ba3(Ru1-xIrx)Ti2O9 |
155 | 2015/12/03, 4PM | E6-2, #1323 | Dr. Sang-Yun Lee (3rd institute of Physics, University of Stuttgart, Germany) | Hybrid solid state spin qubits in wide bandgap semiconductors |
154 | 2015/11/28, 10AM | E6-2, #1323 | Dr. Suyong Jung (Korea Research Institute of Standards and Science) | Electron Tunneling Spectroscopy of Single and Bilayer Graphene with Hexagonal Boron Nitride as Tunneling Barrier |
153 | 2015/11/23, 1:30PM | E6-2, #1323 | Dr. Michael Park (Stanford University) | What's Beyond the Standard Model? Lessons from Run I and what might come in Run II |
152 | 2015/11/24, 4PM | E6-2, #1323 | Dr. Kab-Jin Kim (Institute for Chemical Research, Kyoto University, Japan) | Topology-based understanding of spin dynamics in inhomogeneously magnetized systems |
151 | 2016/1/11, 4PM | E6-2, #1323 | Dr. B.J.Kim (Max Planck Institute for Solid State Research) | Mott Physics in the Strong Spin-Orbit Coupling Regime |
» | 2015/12/09, 2PM | E6-2, #1323 | Arjun G. Yodh (University of Pennsylvania) | SWELLABLE COLLOIDAL PARTICLES ARE SWELL |
149 | 2016/09/29-12/13 | E6-2, #1323 | Sangyoon Han 외 |
2016 Fall, Physics Seminar Serises
![]() |
148 | 2015/12/02, 4PM | E6-2, #1323 | Dr. Dae-Jeong Kim (Dept. of Physics and Astronomy, University of California, Irvine) | Samarium Hexaboride: Is it a Topological insulator? |
147 | 2015/12/01, 4PM | E6-2, #1323 | Dr. Yeong Kwan Kim(Lawrence Berkeley National Laboratory, USA) | Introducing extra dimensions to spectroscopic studies of advanced quantum materials |
146 | 2016/1/26, 2PM | E6-2, #1323 | Dr. Sergei V. Kalinin (Center for Nanophase Materials Sciences, Oak Ridge National Laboratory) | Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data |