A programmable microfluidic platform for multisample injection, discretization, and droplet manipulation.


Journal

Biomicrofluidics
ISSN: 1932-1058
Titre abrégé: Biomicrofluidics
Pays: United States
ID NLM: 101293825

Informations de publication

Date de publication:
Jan 2020
Historique:
received: 26 12 2019
accepted: 26 01 2020
entrez: 11 2 2020
pubmed: 11 2 2020
medline: 11 2 2020
Statut: epublish

Résumé

A programmable microfluidic platform enabling on-demand sampling, compartmentalization, and manipulation of multiple aqueous volumes is presented. The system provides random-access actuation of a microtrap array supporting selective discretization of picoliter volumes from multiple sample inputs. The platform comprises two interconnected chips, with parallel T-junctions and multiplexed microvalves within one chip enabling programmable injection of aqueous sample plugs, and nanoliter volumes transferred to a second microtrap array chip in which the plugs are actively discretized into picoliter droplets within a static array of membrane displacement actuators. The system employs two different multiplexer designs that reduce the number of input signals required for both sample injection and discretization. This versatile droplet-based technology offers flexible sample workflows and functionalities for the formation and manipulation of heterogeneous picoliter droplets, with particular utility for applications in biochemical synthesis and cell-based assays requiring flexible and programmable operation of parallel and multistep droplet processes. The platform is used here for the selective encapsulation of differentially labeled cells within a discrete droplet array.

Identifiants

pubmed: 32038741
doi: 10.1063/1.5143434
pii: 1.5143434
pmc: PMC7002170
doi:

Types de publication

Journal Article

Langues

eng

Pagination

014112

Informations de copyright

Copyright © 2020 Author(s).

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Auteurs

Supriya Padmanabhan (S)

Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742, USA.

Tom Misteli (T)

National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.

Classifications MeSH