Microstructure replication using high frequency vibroactive pad

Šakalys, Rokas; Janušas, Giedrius; Palevičius, Arvydas; Bendikienė, Regita; Palevicius, Ramutis

doi:10.5755/j01.mech.21.2.8886

Cited by 8 publications

(3 citation statements)

References 18 publications

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“…As per hypothesis multilayer, in view of a few layers of piezoceramic added to each other can produce greater removals and powers, than single layer can do [35][36]. Along these lines it powers preheated sonotrode to stream all the more quickly and better fill of the master structure to the polymer.…”

Section: Fig 1 Contact Patterns Between the Vap (Vibroactive Pads)mentioning

confidence: 99%

Numerical and Experimental Investigation of Sonotrode for Formation of Piezocomposite Functional Elements

Sodah

Palevičius

Janušas

et al. 2019

mech

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The paper is dedicated to analysis, practical exploitation of sonotrode, whose fundament is multilayer actuator in experiments of mechanical hot imprint. The goal is to compare the quality of microstructures, created by using vibration based on multilayer actuator. Numerical modelling and experimental analysis is performed in order to find resonant frequency of the sonotrode. Having operating frequency, sonotrode applied in mechanical hot imprint process. Microstructures are created on the surface of polycarbonate; the only process variable is vibration. Two types of microstructure quality measurements are performed: measurement of diffraction efficiency, optical microscopy in order to examine quality of replica

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Section: Fig 1 Contact Patterns Between the Vap (Vibroactive Pads)mentioning

confidence: 99%

Numerical and Experimental Investigation of Sonotrode for Formation of Piezocomposite Functional Elements

Sodah

Palevičius

Janušas

et al. 2019

mech

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“…Several papers have been published on ultrasonic hot embossing and its variants Liu and Dung 2005;Mekaru et al 2007a, b;Khuntontong et al 2008;Yu et al 2009;Lee et al 2010;Altmann et al 2012;Šakalys et al 2015;Planellas et al 2014), but up to now only few investigations have been performed on the physical processes during fabrication. Liu and Dung measured the temperature inside of a polymethylmethacrylate (PMMA) plate, 2 mm in thickness, with thermocouples inserted into drilled holes and discovered that in less than 0.5 s temperatures were rising up to 200 °C (Liu and Dung 2005).…”

Section: Introductionmentioning

confidence: 98%

Heat generation and distribution in the ultrasonic hot embossing process

et al. 2016

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“…Manufactured vibroactive pads: (a) first generation, with piezoelectric ring and (b) second generation, with stack-type piezoactuator 18. …”

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confidence: 99%

Analysis of the Influence of High-Frequency Excitation Into Quality of the Replicated Microstructure

et al. 2015

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In the present research, surface relief diffraction gratings were fabricated and investigated. The purpose of this research was to determine the collection of parameters, which influence the diffraction efficiency most positively. For replication process ultrasonic thermal embossing was selected with different manufacturing regimes (time, pressure, and temperature). Diffraction efficiencies of periodical microstructures were measured experimentally. The results have shown increase of periodical microstructure quality with the help of high-frequency oscillations during manufacturing. Combination of pressing time, pressure, temperature, and vibrations improved the efficiency of replication process.

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Microstructure replication using high frequency vibroactive pad

Cited by 8 publications

References 18 publications

Numerical and Experimental Investigation of Sonotrode for Formation of Piezocomposite Functional Elements

Numerical and Experimental Investigation of Sonotrode for Formation of Piezocomposite Functional Elements

Heat generation and distribution in the ultrasonic hot embossing process

Analysis of the Influence of High-Frequency Excitation Into Quality of the Replicated Microstructure

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