Effects of cavity size and density on polymer micro hot embossing

Zhang, Xiang; Fang, Ge; Jiang, Tengjiao; Zhao, Na; Li, Junfeng; Dun, Bowen; Li, Qian

doi:10.1007/s12541-015-0301-0

Cited by 11 publications

(6 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The structural damages can be predicted using this software. Meanwhile, the processing parameters during the demolding step can also be optimized 80,[141][142][143][144][145][146][147] to reduce the possible damages caused by the demolding force. The simulation methodology of macroscopic simulations can be summarized as follows:…”

Section: Review Papermentioning

confidence: 99%

Development and Application of Hot Embossing in Polymer Processing: A Review

Sun¹,

Zhuang²,

Liu³

et al. 2019

ES Mater.Manuf.

View full text Add to dashboard Cite

Hot embossing of polymer materials is a promising technology for the fabrication of high quality and precision patterns on the micro/nanoscales. There are three basic forms of hot embossing including, plate-to-plate (P2P), roll-to-plate (R2P), and roll-to-roll (R2R) hot embossing. It also can be divided into isothermal and non-isothermal hot embossing according to the different temperature control modes of polymer substrates and structured molds. This review reports recent progress made of hot embossing methods in polymer processing and the efforts to shorten its processing period for commercial applications. Research and innovations in simulation of hot embossing process and mold fabrication are also comprehensively summarized. Within this review, microfluidics, light guide plate (LGP), and other novel applications of hot embossing are systematically cataloged. Finally, challenges and future trends of hot embossing in polymer processing are presented and forecasted.

show abstract

Section: Review Papermentioning

confidence: 99%

Development and Application of Hot Embossing in Polymer Processing: A Review

Sun¹,

Zhuang²,

Liu³

et al. 2019

ES Mater.Manuf.

View full text Add to dashboard Cite

show abstract

“…The heating temperature was set above the glass transition temperature (T g ) to deform the membrane and avoid melting. A specific pressure or die speed embossed the polymer membrane on the micromould [18]. A pressure sensor was used to ensure a pressure of 100 N, and the loading accuracy was controlled to be within ±0.01 N.…”

Section: Fibre Micro Hot Embossingmentioning

confidence: 99%

Polymer scaffolds for vascular tissue engineering fabricated by combined electrospinning and hot embossing

Yan

Zhang

et al. 2017

Biomed. Mater.

Self Cite

View full text Add to dashboard Cite

Although tissue engineering has shown great advances in recent years, creating proper mechanical properties and cell growth microenvironments is still challenging. In this study, electrospun nanofibrous membranes were hot embossed to develop three-dimensional hierarchical micro/nanostructures that load and culture human umbilical-vein endothelial cells (HUVECs). The hot-embossed membranes exhibited not only superior mechanical properties (the tensile strength was 7.01 ± 0.18 MPa and the tensile modulus was 166.91 ± 15.54 MPa), but also better cell viability evaluated through a CCK-8 assay and fluorescent dye. The grating and well arrays of the micropatterned fibre mats encouraged the HUVECs to proliferate. Therefore, the approach proposed in this paper-combined electrospinning and hot embossing-has bright prospects in biomedical applications for the use of polymer scaffold in tissue engineering.

show abstract

“…The replicated pattern quality of the hot embossed part is significantly influenced by the process parameters, such as embossing pressure, embossing temperature, and holding time [ 27 , 28 , 29 , 30 , 31 ]. Furthermore, the effects of the geometric structures and size of the mold cavity on the hot embossing process are critical issues that need to be addressed, because the polymer replication ratio and filling height of the hot embossed product share a complicated nonlinear relationship with cavity size and density [ 32 , 33 , 34 , 35 ]. A nonuniform filling phenomenon is observed when a single embossing master mold contains multiple, nonuniform feature geometries.…”

Section: Introductionmentioning

confidence: 99%

Nonuniform Heating Method for Hot Embossing of Polymers with Multiscale Microstructures

Chang¹

2021

Polymers

View full text Add to dashboard Cite

The hot embossing of polymers is one of the most popular methods for replicating high-precision structures on thermoplastic polymer substrates at the micro-/nanoscale. However, the fabrication of hybrid multiscale microstructures by using the traditional isothermal hot embossing process is challenging. Therefore, in this study, we propose a novel nonuniform heating method for the hot embossing of polymers with multiscale microstructures. In this method, a thin graphene-based heater with a nonuniform heating function, a facility that integrates the graphene-based heater and gas-assisted hot embossing, and a roll of thermoplastic film are employed. Under appropriate process conditions, multiscale polymer microstructure patterns are fabricated through a single-step hot embossing process. The quality of the multiscale microstructure patterns replicated is uniform and high. The technique has great potential for the rapid and flexible fabrication of multiscale microstructure patterns on polymer substrates.

show abstract

Effects of cavity size and density on polymer micro hot embossing

Cited by 11 publications

References 23 publications

Development and Application of Hot Embossing in Polymer Processing: A Review

Development and Application of Hot Embossing in Polymer Processing: A Review

Polymer scaffolds for vascular tissue engineering fabricated by combined electrospinning and hot embossing

Nonuniform Heating Method for Hot Embossing of Polymers with Multiscale Microstructures

Contact Info

Product

Resources

About