Evidence map›Paper›PMID 30736440›Full record

ArticleMicromachines2019

Affordable Fabrication of Conductive Electrodes and Dielectric Films for a Paper-based Digital Microfluidic Chip.

Veasna Soum, Yunpyo Kim, Sooyong Park, Mary Chuong, Soo Ryeon Ryu, Sang Ho Lee, Georgi Tanev, Jan Madsen, Oh-Sun Kwon, Kwanwoo Shin

Abstract read
In one paragraph

Article in Micromachines, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Veasna SoumDepartment of Chemistry, Institute of Biological Interfaces, Sogang University, Seoul 04107, Korea. veasna_soum@yahoo.com.ORCID 0000-0003-4164-2379
Yunpyo KimDepartment of Chemistry, Institute of Biological Interfaces, Sogang University, Seoul 04107, Korea. hhh0411hhh@naver.com.
Sooyong ParkDepartment of Chemistry, Institute of Biological Interfaces, Sogang University, Seoul 04107, Korea. qkrtndyd111@naver.com.
Mary ChuongDepartment of Chemistry, Institute of Biological Interfaces, Sogang University, Seoul 04107, Korea. marychuong05@gmail.com.
Soo Ryeon RyuDepartment of Chemistry, Institute of Biological Interfaces, Sogang University, Seoul 04107, Korea. navio23@sogang.ac.kr.
Sang Ho LeeDepartment of Chemical Engineering, The Cooper Union for Advancement of Science and Art, New York, NY 10003, USA. private.shlee@gmail.com.
Georgi TanevDepartment of Applied Mathematics and Computer Science, Technical University of Denmark, 2800 Lyngby, Denmark. g.p.tanev@gmail.com.
Jan MadsenDepartment of Applied Mathematics and Computer Science, Technical University of Denmark, 2800 Lyngby, Denmark. jama@dtu.dk.ORCID 0000-0002-5098-8454
Oh-Sun KwonDepartment of Chemistry, Institute of Biological Interfaces, Sogang University, Seoul 04107, Korea. oskwon@sogang.ac.kr.ORCID 0000-0001-8605-8331
Kwanwoo ShinDepartment of Chemistry, Institute of Biological Interfaces, Sogang University, Seoul 04107, Korea. kwshin@sogang.ac.kr.ORCID 0000-0002-7563-8581

Funding

Basic Science Research Program, National Research Foundation of Korea (NRF), Ministry of Science and ICT (MSIT) 2017R1D1A1B03032095, 2016R1A2B3015239
6 · The paper itself

Abstract

In order to fabricate a digital microfluidic (DMF) chip, which requires a patterned array of electrodes coated with a dielectric film, we explored two simple methods: Ballpoint pen printing to generate the electrodes, and wrapping of a dielectric plastic film to coat the electrodes. For precise and programmable printing of the patterned electrodes, we used a digital plotter with a ballpoint pen filled with a silver nanoparticle (AgNP) ink. Instead of using conventional material deposition methods, such as chemical vapor deposition, printing, and spin coating, for fabricating the thin dielectric layer, we used a simple method in which we prepared a thin dielectric layer using pre-made linear, low-density polyethylene (LLDPE) plastic (17-μm thick) by simple wrapping. We then sealed it tightly with thin silicone oil layers so that it could be used as a DMF chip. Such a treated dielectric layer showed good electrowetting performance for a sessile drop without contact angle hysteresis under an applied voltage of less than 170 V. By using this straightforward fabrication method, we quickly and affordably fabricated a paper-based DMF chip and demonstrated the digital electrofluidic actuation and manipulation of drops.

Indexed as

ballpoint pen printingconductive electrodedielectric filmdigital microfluidic chipelectrowettingplastic wrap

Identifiers

PMID30736440
PMCPMC6412519

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.