Current innovations in roller embossing—a comprehensive review

Deshmukh, Swarup S.; Goswami, Arjyajyoti

doi:10.1007/s00542-022-05265-0

Cited by 10 publications

(5 citation statements)

References 213 publications

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“…One of the most viable production techniques for industrializing nanoimprinting is the roll-to-roll microembossing method based on nanoimprint lithography. Continuous processes, easy system structure, the material provided at a cheap cost, and low energy use contribute to its success [77].…”

Section: Roll-to-roll-micro-he Processmentioning

confidence: 99%

A review on modelling and numerical simulation of micro hot embossing process: fabrication, mold filling behavior, and demolding analysis

Datta

Deshmukh²,

Kar³

et al. 2023

Eng. Res. Express

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Micro-hot embossing (micro-HE) of polymeric materials creates exact micro/nanoscaled designs. Micro-HE processes include plate-to-plate (P2P), roll-to-roll (R2R), and roll-to-plate (R2P). Micro-HE is preferred for large-scale production of micro-patterns on polymer substrates. However, the lack of simulation models for optimization and component design prevents the broad use of this technology. As the size of the micro patterns decreases from micron to sub-micron, it improves performance features. Micro-HE cannot be analyzed using software tools like injection molding since there is no macroscopic equivalent. Commercial simulation software covers injection molding and associated processes. No commercial tool covers all micro-HE process steps, variations, and boundary conditions. According to the authors, such review articles aren't in the literature. This article summarizes the simulation work in the micro-HE process field related to replication accuracy, and mold filling behaviour. In addition to this, various models were discussed based on properties of material, based on various forces participating in the HE process, and gives a detailed idea about mold-filling behavior and demolding analysis. Finally challenges and future scope related to modelling and simulation work in field of hot embossing has been presented.

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Section: Roll-to-roll-micro-he Processmentioning

confidence: 99%

A review on modelling and numerical simulation of micro hot embossing process: fabrication, mold filling behavior, and demolding analysis

Datta

Deshmukh²,

Kar³

et al. 2023

Eng. Res. Express

Self Cite

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“…During the ultrasonic micro hot embossing technology, no heating is used, but due to vibrations and friction between the plastic and the mold, the plastic reaches the glass transition temperature and begins to flow into the mold [17]. The advantages of the technology are the possibility of forming structures with low load and obtaining large areas of structures with low internal stresses [18]. However, the main drawback is that the structures can be formed with a polymer thickness of 50 µm to 500 µm.…”

Section: Of 10mentioning

confidence: 99%

Dynamic Mechanical Properties of PVC Plastics in the Formation of Microstructures with Novel Magnetostrictor

et al. 2023

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Molding in thermoplastic polymers using ultrasonic hot embossing technology is promising due to its high precision reproducibility. To understand, analyze and apply the formation of polymer microstructures by the ultrasonic hot embossing method, it is necessary to understand dynamic loading conditions. The Standard Linear Solid model (SLS) is a method that allows analyzing the viscoelastic properties of materials by representing them as a combination of springs and dashpots. However, this model is general, and it is challenging to represent a viscoelastic material with multiple relaxations. Therefore, this article aims to use the data obtained from dynamic mechanical analysis for extrapolation in a wide range of cyclic deformations and to use the obtained data in microstructure formation simulations. The formation was replicated using a novel magnetostrictor design that sets a specific temperature and vibration frequency. The changes were analyzed on a diffractometer. After the diffraction efficiency measurement, it was found that the highest quality structures were formed at a temperature of 68 °C, a frequency of 10 kHz, a frequency amplitude of 1.5 µm and a force of 1 kN force. Moreover, the structures could be molded on any thickness of plastic.

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“…It is good for prototyping and can be extended and modified to become a continuous process (e.g., roll-to-roll, roll-to-plate, etc. [ 32 ]). Several reviews can be found in the literature [ 33 , 34 , 35 ].…”

Section: Mold-based Techniquesmentioning

confidence: 99%

Fabrication of Polymer Microfluidics: An Overview

Juang

Chiu

2022

Polymers

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Microfluidic platform technology has presented a new strategy to detect and analyze analytes and biological entities thanks to its reduced dimensions, which results in lower reagent consumption, fast reaction, multiplex, simplified procedure, and high portability. In addition, various forces, such as hydrodynamic force, electrokinetic force, and acoustic force, become available to manipulate particles to be focused and aligned, sorted, trapped, patterned, etc. To fabricate microfluidic chips, silicon was the first to be used as a substrate material because its processing is highly correlated to semiconductor fabrication techniques. Nevertheless, other materials, such as glass, polymers, ceramics, and metals, were also adopted during the emergence of microfluidics. Among numerous applications of microfluidics, where repeated short-time monitoring and one-time usage at an affordable price is required, polymer microfluidics has stood out to fulfill demand by making good use of its variety in material properties and processing techniques. In this paper, the primary fabrication techniques for polymer microfluidics were reviewed and classified into two categories, e.g., mold-based and non-mold-based approaches. For the mold-based approaches, micro-embossing, micro-injection molding, and casting were discussed. As for the non-mold-based approaches, CNC micromachining, laser micromachining, and 3D printing were discussed. This review provides researchers and the general audience with an overview of the fabrication techniques of polymer microfluidic devices, which could serve as a reference when one embarks on studies in this field and deals with polymer microfluidics.

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Current innovations in roller embossing—a comprehensive review

Cited by 10 publications

References 213 publications

A review on modelling and numerical simulation of micro hot embossing process: fabrication, mold filling behavior, and demolding analysis

A review on modelling and numerical simulation of micro hot embossing process: fabrication, mold filling behavior, and demolding analysis

Dynamic Mechanical Properties of PVC Plastics in the Formation of Microstructures with Novel Magnetostrictor

Fabrication of Polymer Microfluidics: An Overview

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