TY - JOUR
T1 - Template-Assisted Electroforming of Fully Semi-Hard-Magnetic Helical Microactuators
AU - Chatzipirpiridis, George
AU - de Marco, Carmela
AU - Pellicer, Eva
AU - Ergeneman, Olgaç
AU - Sort, Jordi
AU - Nelson, Bradley J.
AU - Pané, Salvador
PY - 2018/9/1
Y1 - 2018/9/1
N2 - © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The authors report on the fabrication of semi-hard-magnetic microhelices using template-assisted electroforming. The method consists of electrodepositing a material on a sacrificial mandrel on which a pattern has been previously written. To electroform the helical microswimmers, a helical template on a polymer-coated metallic mandrel is created using a laser, which precisely ablates the polymer coating and exposes the mandrel surface. Subsequently, the semi-hard-magnetic material is electrodeposited in the trenches produced by the laser. In this investigation, the helical structures are obtained from an electrolyte, which enables the production of hard-magnetic CoPt alloys. The authors also show that electroformed semi-hard-magnetic helical microswimmers can propel in viscous environments such as silicon oil in three dimensions and against gravity. Their manufacturing approach can be used for the fabrication of more complex architectures for a wide range of applications and can be potentially extended to any electroplatable material.
AB - © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim The authors report on the fabrication of semi-hard-magnetic microhelices using template-assisted electroforming. The method consists of electrodepositing a material on a sacrificial mandrel on which a pattern has been previously written. To electroform the helical microswimmers, a helical template on a polymer-coated metallic mandrel is created using a laser, which precisely ablates the polymer coating and exposes the mandrel surface. Subsequently, the semi-hard-magnetic material is electrodeposited in the trenches produced by the laser. In this investigation, the helical structures are obtained from an electrolyte, which enables the production of hard-magnetic CoPt alloys. The authors also show that electroformed semi-hard-magnetic helical microswimmers can propel in viscous environments such as silicon oil in three dimensions and against gravity. Their manufacturing approach can be used for the fabrication of more complex architectures for a wide range of applications and can be potentially extended to any electroplatable material.
KW - electroforming
KW - hard-magnetism
KW - magnetic manipulation
KW - microrobotics
U2 - 10.1002/adem.201800179
DO - 10.1002/adem.201800179
M3 - Article
VL - 20
JO - Advanced Engineering Materials
JF - Advanced Engineering Materials
SN - 1438-1656
IS - 9
M1 - 1800179
ER -