Non-Brownian particle gel

Chia Nan Yuan, Yu Jane Sheng, Heng Kwong Tsao

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Particle gels are usually formed by density matching or Brownian motion against gravity. However, the suspended state of non-Brownian particles is essential in applications, such as Si-wafer wire sawing. By the addition of alkyl amine, micron-sized SiC suspensions are shown to form particle gel in ethylene glycol. The ratio of storage to loss modulus is about 3, indicating a weak gel. The structure by particle-particle attraction is demonstrated through existing yield stress. With increasing surfactant concentration, the gel forms easier, the sediment layer swells more significantly, and the yield stress is greater accordingly. A gelling mechanism has been proposed and examined.

Original languageEnglish
Article number234103
JournalApplied Physics Letters
Volume95
Issue number23
DOIs
StatePublished - 2009

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