期刊
SOFT MATTER
卷 9, 期 29, 页码 6867-6875出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3sm27620a
关键词
-
类别
资金
- National Science Foundation [CBET-0955003]
- Welch Foundation [C-1755]
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0955003] Funding Source: National Science Foundation
We present a novel method to tune the interaction potential from 5k(B)T to 40k(B)T in situ between micron-sized superparamagnetic colloids. The potential is composed of a highly tunable long-range attraction induced via a rotating magnetic field and a short-range electrostatic repulsion. Various 2-D thermodynamic phases are observed in a colloidal suspension at different field strengths. Quantitative agreement is found between theory and experiments for dipolar interactions. A theory to account for the induced dipole due to neighboring particles is also presented. The effective three-body potential of a dilute trimer system is measured to account for many-body effects in the system. These results demonstrate an ideal model to study the phase behavior in 2-D systems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据