Solvent-assisted polymer micro-molding

Han, Lulu; Zhou, Jing; Gong, Xiao; Gao, Changyou

doi:10.1007/s11434-009-0212-5

Cited by 11 publications

(12 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Because the PEMs were assembled in the 1 M NaCl solution, the physicochemical properties of the pristine PEMs are identical to the multilayers-1 M [36,40].…”

Section: Multilayer Assemblymentioning

confidence: 99%

Influences of surface chemistry and swelling of salt-treated polyelectrolyte multilayers on migration of smooth muscle cells

Han

Mao

et al. 2012

J. R. Soc. Interface.

Self Cite

View full text Add to dashboard Cite

The cell migration plays a crucial role in a variety of physiological and pathological processes and can be regulated by the cell -substrate interactions. We found previously that the poly (sodium 4-styrenesulphonate) (PSS)/poly(diallyldimethylammonium) chloride (PDADMAC) multilayers post-treated in 1-5 M NaCl solutions result in continuous changes of their physicochemical properties such as thickness, chemical composition, surface charge, swelling ratio and wettability. In this study, the responses of human smooth muscle cells (SMCs) on these salt-treated multilayers, particularly the governing factors of cellular migration that offer principles for designing therapeutics and implants, were disclosed. The cell migration rate was slowest on the 3 M NaCl-treated multilayers, which was comparable with that on tissue culture plates, but it was highest on 5 M NaCl-treated multilayers. To elucidate the intrinsic mechanisms, cell adhesion, proliferation, adhesion and related gene expressions were further investigated. The SMCs preferred to attach, spread and proliferate on the PSS-dominated surfaces with well-organized focal adhesion and actin fibres, especially on the 3 M NaCl-treated multilayers, while were kept round and showed low viability on the PDADMAC-dominated surfaces. The relative mRNA expression levels of adhesion-related genes such as fibronectin, laminin and focal adhesion kinase, and migration-related genes such as myosin IIA and Cdc42 were compared to explain the different cellular behaviours. These results reveal that the surface chemistry and the swelling of the salt-treated multilayers govern the cell migration behaviours.

show abstract

“…Because the PEMs were assembled in the 1 M NaCl solution, the physicochemical properties of the pristine PEMs are identical to the multilayers-1 M [36,40].…”

Section: Multilayer Assemblymentioning

confidence: 99%

Influences of surface chemistry and swelling of salt-treated polyelectrolyte multilayers on migration of smooth muscle cells

Han

Mao

et al. 2012

J. R. Soc. Interface.

Self Cite

View full text Add to dashboard Cite

show abstract

“…This strategy of mold filling is referred to as solvent‐assisted micromolding (SAMIM) . Because no high temperature is required during the SAMIM process, disadvantageous effects such as shrinkage after cooling, polymer degradation at high temperatures, and incompatibility with high‐ T g materials do not play a role in SAMIM . Parallel lines with a width of around 60 nm have been achieved with this method, although resolutions are typically in the order of micrometers …”

Section: Fabrication Methods For 3d Structures With Areas Of Various mentioning

confidence: 99%

“…[23] Because no high temperature is required during the SAMIM process, disadvantageous effects such as shrinkage after cooling, polymer degradation at high temperatures, and incompatibility with high-T g materials do not play a role in SAMIM. [169] Parallel lines with a width of around 60 nm have been achieved with this method, [162] although resolutions are typically in the order of micrometers. [170,171] Replica molding (RM) is a technique in which a hard mold or pattern (the so-called master) is replicated using soft molds.…”

Section: Figurementioning

confidence: 99%

Nanostructure and Microstructure Fabrication: From Desired Properties to Suitable Processes

Assenbergh

Meinders²,

Geraedts

et al. 2018

Small

View full text Add to dashboard Cite

When designing a new nanostructure or microstructure, one can follow a processing-based manufacturing pathway, in which the structure properties are defined based on the processing capabilities of the fabrication method at hand. Alternatively, a performance-based pathway can be followed, where the envisioned performance is first defined, and then suitable fabrication methods are sought. To support the latter pathway, fabrication methods are here reviewed based on the geometric and material complexity, resolution, total size, geometric and material diversity, and throughput they can achieve, independently from processing capabilities. Ten groups of fabrication methods are identified and compared in terms of these seven moderators. The highest resolution is obtained with electron beam lithography, with feature sizes below 5 nm. The highest geometric complexity is attained with vat photopolymerization. For high throughput, parallel methods, such as photolithography (≈10 m h ), are needed. This review offers a decision-making tool for identifying which method to use for fabricating a structure with predefined properties.

show abstract

“…Several patterning methods based on imprinting, molding, and embossing with an elastomeric stamp are the basis of soft lithography, currently including: micro-contact printing (Kim et al, 2005), micro-molding in capillary (Jeong et al, 2009), replica molding (Sharma and Madou, 2012), solvent-assisted micro-molding (Han et al, 2009), phaseshifting edge lithography (Ye and Qi, 2011), decal transfer lithography (Childs and Nuzzo, 2004;Childs and Nuzzo, 2005;Kim and Kim, 2007), nanotransfer printing (Hocheng and Hsu, 2008;Errachid et al, 2007;Fox et al, 2012), dip-pen lithography (Henry et al, 2008;Lenhert and Fuchs, 2008;Abrishamchian et al, 2013), and nanoskiving assays. Soft lithography is especially used to produce structural patterned surfaces and coatings with specific biomolecules.…”

Section: Soft Lithographymentioning

confidence: 99%