Colloidal inks for directed assembly of 3-D periodic structures

被引:556
作者
Smay, JE
Cesarano, J
Lewis, JA
机构
[1] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA
[2] Sandia Natl Labs, Albuquerque, NM 87106 USA
关键词
D O I
10.1021/la0257135
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Mesoscale periodic structures have been fabricated via directed assembly of colloidal inks. Concentrated colloidal gels with tailored viscoelastic properties were designed to form self-supporting features. The inks were deposited in a layer-by-layer sequence to directly write the desired 3-D pattern. Periodic structures with spanning features that vary between similar to100 mum and 1 mm were assembled. Shear rate profiles were calculated on the basis of the measured rheological properties of the inks under slip and no-slip boundary conditions during flow through a cylindrical deposition nozzle. Deflection measurements of spanning elements were used to probe the relationship between gel strength, deposition speed, and shear rate profiles in the nozzle. These observations revealed that the ink adopted a rigid (gel) core-fluid shell architecture during assembly, which simultaneously facilitated bonding and shape retention of the deposited elements.
引用
收藏
页码:5429 / 5437
页数:9
相关论文
共 43 条
[1]  
Agarwala MK, 1996, AM CERAM SOC BULL, V75, P60
[2]   Processing of advanced electroceramic components by fused deposition technique [J].
Allahverdi, M ;
Danforth, SC ;
Jafari, M ;
Safari, A .
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2001, 21 (10-11) :1485-1490
[3]   THE RHEOLOGY OF CONCENTRATED DISPERSIONS OF WEAKLY ATTRACTING COLLOIDAL PARTICLES WITH AND WITHOUT WALL SLIP [J].
BUSCALL, R ;
MCGOWAN, JI ;
MORTONJONES, AJ .
JOURNAL OF RHEOLOGY, 1993, 37 (04) :621-641
[4]   SCALING BEHAVIOR OF THE RHEOLOGY OF AGGREGATE NETWORKS FORMED FROM COLLOIDAL PARTICLES [J].
BUSCALL, R ;
MILLS, PDA ;
GOODWIN, JW ;
LAWSON, DW .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1988, 84 :4249-4260
[5]   VISCOMETRY OF NONHOMOGENEOUS FLOWS AND THE BEHAVIOR OF A TITANIUM-CROSSLINKED HYDROXYPROPYL GUAR GEL IN COUETTE-FLOW [J].
CAMERON, JR .
JOURNAL OF RHEOLOGY, 1989, 33 (01) :15-46
[6]  
Cesarano J., 1998, MRS P, V542, P133, DOI DOI 10.1557/PROC-542-133
[7]  
Cesarano J., US Patent, Patent No. [6027326 A, 6027326]
[8]  
Cesarano J., 1998, Ceramic Industry, V148, P94, DOI DOI 10.1016/J.PROCIR.2015.04.028
[9]   Shear and compressive rheology of aggregated alumina suspensions [J].
Channell, GM ;
Zukoski, CF .
AICHE JOURNAL, 1997, 43 (07) :1700-1708
[10]   Materials processing - The power of direct writing [J].
Chrisey, DB .
SCIENCE, 2000, 289 (5481) :879-+