We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Microfluidic Synthesis of Hydrogel Microparticles with Superparamagnetic Colloids Embedded at Prescribed Positions for Anticounterfeiting Applications.
- Authors
Zhang, Mengmeng; Warth, Thom; Boon, Niels; Demirörs, Ahmet Faik; Eral, Hüseyin Burak
- Abstract
A microfluidic platform for continuous synthesis of hydrogel microparticles with superparamagnetic colloids (SPCs) embedded at prescribed positions is described. The shape of the cross‐linked microparticle is independently controlled by stop–flow lithography, whereas the position of trapped SPCs are dictated by virtual magnetic moulds made of 2D nickel patches facilitating magnetic trapping. The spatial positions of trapped SPCs collectively function as a binary code matrix for product authentication. Analytical and finite element methods are combined to optimize the trapping efficiency of SPCs by systematically investigating magnetic field microgradients produced by nickel patches. It is envisioned that the proposed magnetic microparticles will contribute to the development of soft matter inspired product quality control, tracking and anti‐counterfeiting technologies.
- Subjects
HYDROGELS; COLLOIDS; BINARY codes; FINITE element method; TWO-dimensional bar codes; PRODUCT coding
- Publication
Advanced Materials Interfaces, 2022, Vol 9, Issue 29, p1
- ISSN
2196-7350
- Publication type
Article
- DOI
10.1002/admi.202200899