Abstract
Viscous flow is familiar and useful, yet the underlying physics is surprisingly subtle and complex. Recent experiments an simulations show that the textbook assumption of 'no slip at the boundary' can fail greatly when walls are sufficiently smooth. The reasons for this seem to involve materials chemistry interactions that can be controlled-especially wettability and the presence of trace impurities, even of dissolved gases. To discover what boundary condition is appropriate for solving continuum equations requires investigation of microscopic particulars. Here, we draw attention to unresolved topics of investigation and to the potential to capitalize on 'slip at the wall' for purposes of materials engineering.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 221-227 |
| Number of pages | 7 |
| Journal | Nature Materials |
| Volume | 2 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2003 |
ASJC Scopus subject areas
- General Chemistry
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
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In: Nature Materials, Vol. 2, No. 4, 04.2003, p. 221-227.
Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Slippery questions about complex fluids flowing past solids
AU - Granick, Steve
AU - Zhu, Yingxi
AU - Lee, Hyunjung
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This work was supported in part by a grant to H.L. by the postdoctoral fellowship program from Korea Science & Engineering Foundation (KOSEF). This work was supported by the U.S. Department of Energy, Division of Materials Science, under Award No. DEFG02-91ER45439 through the Frederick Seitz Materials Research Laboratory at the University of Illinois at Urbana-Champaign. Correspondence and requests for materials should be addressed to S.G.
PY - 2003/4
Y1 - 2003/4
N2 - Viscous flow is familiar and useful, yet the underlying physics is surprisingly subtle and complex. Recent experiments an simulations show that the textbook assumption of 'no slip at the boundary' can fail greatly when walls are sufficiently smooth. The reasons for this seem to involve materials chemistry interactions that can be controlled-especially wettability and the presence of trace impurities, even of dissolved gases. To discover what boundary condition is appropriate for solving continuum equations requires investigation of microscopic particulars. Here, we draw attention to unresolved topics of investigation and to the potential to capitalize on 'slip at the wall' for purposes of materials engineering.
AB - Viscous flow is familiar and useful, yet the underlying physics is surprisingly subtle and complex. Recent experiments an simulations show that the textbook assumption of 'no slip at the boundary' can fail greatly when walls are sufficiently smooth. The reasons for this seem to involve materials chemistry interactions that can be controlled-especially wettability and the presence of trace impurities, even of dissolved gases. To discover what boundary condition is appropriate for solving continuum equations requires investigation of microscopic particulars. Here, we draw attention to unresolved topics of investigation and to the potential to capitalize on 'slip at the wall' for purposes of materials engineering.
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UR - http://www.scopus.com/inward/citedby.url?scp=0038206540&partnerID=8YFLogxK
U2 - 10.1038/nmat854
DO - 10.1038/nmat854
M3 - Article
C2 - 12690393
AN - SCOPUS:0038206540
SN - 1476-1122
VL - 2
SP - 221
EP - 227
JO - Nature Materials
JF - Nature Materials
IS - 4
ER -