ISSN (print) 0914-4935
ISSN (online) 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
is covered by Science Citation Index Expanded (Clarivate Analytics), Scopus (Elsevier), and other databases.

Instructions to authors
English    日本語

Instructions for manuscript preparation
English    日本語


 Sensors and Materials
 1-23-3-303 Sendagi,
 Bunkyo-ku, Tokyo 113-0022, Japan
 Tel: 81-3-3827-8549
 Fax: 81-3-3827-8547

MYU Research, a scientific publisher, seeks a native English-speaking proofreader with a scientific background. B.Sc. or higher degree is desirable. In-office position; work hours negotiable. Call 03-3827-8549 for further information.

MYU Research

(proofreading and recording)

(translation service)

The Art of Writing Scientific Papers

(How to write scientific papers)
(Japanese Only)

Sensors and Materials, Volume 32, Number 7(2) (2020)
Copyright(C) MYU K.K.
pp. 2345-2354
S&M2263 Research Paper of Special Issue
Published: July 20, 2020

Compact DNA Droplet Concentration Detection System Based on Impedance Measurement [PDF]

Ji-Seong Park, Mi-So Lee, Chan-Young Park, Yu-Seop Kim, Hye-Jeong Song, and Jong-Dae Kim

(Received August 1, 2019; Accepted April 2, 2020)

Keywords: impedance, label-free, droplet, concentration, Chlamydia trachomatis DNA

We propose a label-free system that estimated the concentration of DNA droplets in sub-microliter volume based on the impedance measurement method. A USB oscilloscope with a built-in function generator was employed to reduce the system size instead of existing lock-in amplifiers or network analyzers. An electrode pair was fabricated with patterns on a printed circuit board (PCB). To minimize the measurement variation of the impedance between experiments, the electrode was made hydrophilic and the periphery of the electrode was blocked with a hydrophobic substance to prevent the droplet from spreading. For this purpose, the hydrophilicities of gold, tin, and silver coatings available in the PCB fabrication process and the hydrophobicities of various materials were investigated to select the most hydrophilic material to be used for the electrode coating. The proposed system was evaluated with various concentrations of saline solution and Chlamydia trachomatis DNA. Multiple measurements for a day experiment were performed for several days to investigate the precision of the proposed system. The measurement coefficient of variation (CV) of the proposed system was less than 3.7% for saline solution and 1.8% for DNA solution, showing that the proposed system is sufficiently precise.

Corresponding author: Jong-Dae Kim

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Cite this article
Ji-Seong Park, Mi-So Lee, Chan-Young Park, Yu-Seop Kim, Hye-Jeong Song, and Jong-Dae Kim, Compact DNA Droplet Concentration Detection System Based on Impedance Measurement, Sens. Mater., Vol. 32, No. 7, 2020, p. 2345-2354.

Forthcoming Regular Issues

Forthcoming Special Issues

Special Issue on Advanced Materials on Electronic and Mechanical Devices and their Application on Sensors (5)
Guest editor, Teen-Hang Meen (National Formosa University), Wenbing Zhao (Cleveland State University), and Cheng-Fu Yang (National University of Kaohsiung)

Special Issue on Advances in Shape Memory Materials
Guest editor, Ryosuke Matsui (Aichi Institute of Technology) and Hiroyuki Miki (Tohoku University)

Special Issue on Sensing Technologies and Their Applications (1)
Guest editor, Rey-Chue Hwang (I-Shou University)
Call for paper

Special Issue on Perceptual Deep Learning in Computer Vision and its Application
Guest editor, Chih-Hsien Hsia (National Ilan University)

Special Issue on Materials, Devices, Circuits, and Analytical Methods for Various Sensors (3)
Guest editor, Chien-Jung Huang (National University of Kaohsiung), Cheng-Hsing Hsu (National United University), Ja-Hao Chen (Feng Chia University), and Wei-Ling Hsu (Huaiyin Normal University)
Conference website

Special Issue on New Trends in Smart Sensor Systems
Guest editor, Takahiro Hayashi (Kansai University)
Call for paper

Copyright(C) MYU K.K. All Rights Reserved.