Next Article in Journal
Polymeric Nanowires for Diagnostic Applications
Previous Article in Journal
Palladium-Gold Modified Ultramicro Interdigital Array Electrode Chip for Nitrate Detection in Neutral Water
Previous Article in Special Issue
Micro-Surface and -Interfacial Tensions Measured Using the Micropipette Technique: Applications in Ultrasound-Microbubbles, Oil-Recovery, Lung-Surfactants, Nanoprecipitation, and Microfluidics
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessFeature PaperArticle

Hybrid Two-Scale Fabrication of Sub-Millimetric Capillary Grippers

1
TIPs Department, Université libre de Bruxelles (ULB), 1050 Brussels, Belgium
2
Politecnico di Milano, 20133 Milano, Italy
*
Author to whom correspondence should be addressed.
Micromachines 2019, 10(4), 224; https://doi.org/10.3390/mi10040224
Received: 22 February 2019 / Revised: 20 March 2019 / Accepted: 26 March 2019 / Published: 29 March 2019
(This article belongs to the Special Issue Microscale Surface Tension and Its Applications)
  |  
PDF [3171 KB, uploaded 29 March 2019]
  |  

Abstract

Capillary gripping is a pick-and-place technique that is particularly well-suited for handling sub-millimetric components. Nevertheless, integrating a fluid supply and release mechanism becomes increasingly difficult to manufacture for these scales. In the present contribution, two hybrid manufacturing procedures are introduced in which the creation of the smallest features is decoupled from the macro-scale components. In the first procedure, small scale features are printed directly (by two-photon polymerisation) on top of a 3D-printed device (through stereolithography). In the second approach, directional ultraviolet (UV)-illumination and an adapted design allowed for successful (polydimethylsiloxane, PDMS) moulding of the microscopic gripper head on top of a metal substrate. Importantly, a fully functional microchannel is present in both cases through which liquid to grip the components can be supplied and retracted. This capability of removing the liquid combined with an asymmetric pillar design allows for a passive release mechanism with a placement precision on the order of 3% of the component size. View Full-Text
Keywords: capillary gripper; pick and place; micromanufacturing; two-photon polymerization; stereolithography; polydimethylsiloxane (PDMS) replication capillary gripper; pick and place; micromanufacturing; two-photon polymerization; stereolithography; polydimethylsiloxane (PDMS) replication
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Dehaeck, S.; Cavaiani, M.; Chafai, A.; Tourtit, Y.; Vitry, Y.; Lambert, P. Hybrid Two-Scale Fabrication of Sub-Millimetric Capillary Grippers. Micromachines 2019, 10, 224.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Micromachines EISSN 2072-666X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top