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Micromachines
Special Issues
Polymer Hybrid Materials in Nano and Microsensors
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Polymer Hybrid Materials in Nano and Microsensors

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D：Materials and Processing".

Deadline for manuscript submissions: closed (30 June 2022) | Viewed by 4282

Special Issue Editors

Dr. Chan Ho Park

E-Mail Website
Guest Editor
1. Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA
2. Department of Radiology, School of Medicine, Stanford University, Stanford, CA 94305, USA
Interests: chemical sensors; biosensors; point-of-care; surface functionalization and coating; polymers; nanomaterials
Special Issues, Collections and Topics in MDPI journals
Dr. Hyunseung Yang

E-Mail Website
Guest Editor
Electronic Convergence Materials & Device Research Center, Korea Electronics Technology Institute, Seongnam-si 13509, Gyeonggi-do, Korea
Interests: carbon nanomaterials; 3D printing materials; conducting pastes; colorimetric sensor
Dr. Ji-Won Seo

E-Mail Website
Guest Editor
1. Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA
2. Department of Radiology, School of Medicine, Stanford University, Stanford, CA 94305, USA
Interests: wearable electronics; real-time sensor; bio-MEMS; implantable sensor; brain-machine-interface; transistor
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nano and microsensors have been utilized in various fields including biomedicine, pharmaceutics, soft robotics, environment monitoring, and wearable/implantable electronics. Trends of miniaturization and real-time detection in sensors demand a breakthrough of the materials and methodologies. In this regard, functional polymers and their hybrid materials have intensively been used as a core material of sensors which are significantly fast and specific in their response, versatility, biocompatibility, and easy tailoring as well as tunable mechanical properties.

We address both fundamentals and applications to cover recent impressive research in nano and microsensors. Fundamental studies include novel polymer design, the fabrication process, sensing mechanism, and characterization. Applications include wearable and implantable electronics, chemical and biological sensors, point-of-care diagnostics, environmental monitoring, toxic gas detection, and nano- and micro-actuators, as well as 3D-printed electronics. This Special Issue introduces new insights on numerous functions of polymer-based materials for next-generation sensors. We look forward to receiving your submissions!

Dr. Chan Ho Park
Dr. Hyunseung Yang
Dr. Ji-Won Seo
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Pressure sensors
  • Chemical sensors
  • Gas sensors
  • Biosensors
  • MEMS
  • Actuators
  • Lab-on-a-chip
  • Wearable sensors
  • Implantable sensors
  • 3D printing

Published Papers (2 papers)

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Research

18 pages, 8673 KiB  
Article
Oligoimide-Mediated Graphene Oxide-Epoxy Nanocomposites with Enhanced Thermal Conductivity and Mechanical Properties
by Muhammad Inshad Khan, Toheed Akhter, Humaira Masood Siddiqi, Young Jun Lee, Hyeonjung Park, Muhmood ul Hassan and Chan Ho Park
Micromachines 2022, 13(9), 1379; https://doi.org/10.3390/mi13091379 - 24 Aug 2022
Cited by 2 | Viewed by 1413
Abstract
The current study reports the preparation of thermally conductive polymeric nanocomposites. For this purpose, two epoxy-based nanocomposites were prepared by dispersing a different type of functionalized graphene oxide (GO) nanofiller in each series. Both these GO nanofillers were functionalized by covalently bonding oligoimide [...] Read more.
The current study reports the preparation of thermally conductive polymeric nanocomposites. For this purpose, two epoxy-based nanocomposites were prepared by dispersing a different type of functionalized graphene oxide (GO) nanofiller in each series. Both these GO nanofillers were functionalized by covalently bonding oligoimide chains on their surfaces. In one series, these oligoimide chains were prepared by reaction of 3,3′,4,4′-benzophenonetetracarboxylic dianhydride (BTDA) with a diamine 4,4′-methylenedianiline (MDA). While in the other case, BTDA was reacted with N,N′-[((propane-2,2-diylbis(4,1-phenylene))bis(oxy))bis(4,1-phenylene)]bis(4-aminobenzamide) (BDM) to mount oligoimide chains on the surface of GO. Both types of oligoimide chains have amino groups as chain-end functional groups. These modified GO nanofillers were added to the epoxy matrices separately to prepare their respective nanocomposites (MDA-B-GO-epoxy nanocomposites and BDM-B-GO-epoxy nanocomposites). The chain-end amino groups of oligoimide chains reacted with the epoxy ring developing a covalent bonding between oligoimide chains of GO and the epoxy matrix. Moreover, these oligoimide chains prevented the agglomeration of GO by acting as spacer groups leading to the uniform dispersion of GO in the epoxy matrix. Various analytical techniques were used to examine the attachment of oligoimide chains to the GO surface, and to examine the morphology, curing potential, mechanical strength, thermal stability, and thermal conductivity of the prepared nanocomposites. We demonstrated that the thermal conductivity of MDA-B-GO-epoxy nanocomposites increased by 52% and an increase of 56% was observed in BDM-B-GO-epoxy nanocomposites. Similarly, a significant improvement was observed in the mechanical strength and thermal stability of both types of nanocomposites. Full article
(This article belongs to the Special Issue Polymer Hybrid Materials in Nano and Microsensors)
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11 pages, 3687 KiB  
Article
Surface Plasmon Resonance-Based Immunosensor for Igm Detection with Gold Nanoparticles
by Nilay Bereli, Monireh Bakhshpour, Aykut Arif Topçu and Adil Denizli
Micromachines 2021, 12(9), 1092; https://doi.org/10.3390/mi12091092 - 10 Sep 2021
Cited by 10 | Viewed by 2349
Abstract
In this work, a surface plasmon resonance (SPR) based immunosensor was prepared by the immobilization of the amine-functionalized gold nanoparticles (N-AuNPs) on the sensing surface to sense immunoglobulin M (IgM) antibodies in the aqueous solution and artificial plasma. The characterization studies of SPR [...] Read more.
In this work, a surface plasmon resonance (SPR) based immunosensor was prepared by the immobilization of the amine-functionalized gold nanoparticles (N-AuNPs) on the sensing surface to sense immunoglobulin M (IgM) antibodies in the aqueous solution and artificial plasma. The characterization studies of SPR based immunosensor for IgM detection were performed with scanning electron microscope (SEM), contact angle measurements, and ellipsometry. Kinetic studies for the IgM immunosensor were carried out in the range of 1.0 to 200 ng/mL IgM concentrations in an aqueous solution. The total IgM analysis time including adsorption, desorption, and regeneration cycles was nearly 10 min for the prepared immunosensor. The limit of detection (LOD) and limit of quantification (LOQ) were found as 0.08 and 0.26 ng/mL, respectively. The reusability of the proposed immunosensor was tested with 6 consecutive adsorption-desorption, and regeneration cycles. Also, enzyme-linked immunosorbent assay (ELISA) method was utilized in the validation of the immunosensor. Full article
(This article belongs to the Special Issue Polymer Hybrid Materials in Nano and Microsensors)
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