1
|
Wu SD, Hsu SH, Ketelsen B, Bittinger SC, Schlicke H, Weller H, Vossmeyer T. Fabrication of Eco-Friendly Wearable Strain Sensor Arrays via Facile Contact Printing for Healthcare Applications. SMALL METHODS 2023; 7:e2300170. [PMID: 37154264 DOI: 10.1002/smtd.202300170] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/28/2023] [Indexed: 05/10/2023]
Abstract
Wearable flexible strain sensors with spatial resolution enable the acquisition and analysis of complex actions for noninvasive personalized healthcare applications. To provide secure contact with skin and to avoid environmental pollution after usage, sensors with biocompatibility and biodegradability are highly desirable. Herein, wearable flexible strain sensors composed of crosslinked gold nanoparticle (GNP) thin films as the active conductive layer and transparent biodegradable polyurethane (PU) films as the flexible substrate are developed. The patterned GNP films (micrometer- to millimeter-scale square and rectangle geometry, alphabetic characters, and wave and array patterns) are transferred onto the biodegradable PU film via a facile, clean, rapid and high-precision contact printing method, without the need of a sacrificial polymer carrier or organic solvents. The GNP-PU strain sensor with low Young's modulus (≈17.8 MPa) and high stretchability showed good stability and durability (10 000 cycles) as well as degradability (42% weight loss after 17 days at 74 °C in water). The GNP-PU strain sensor arrays with spatiotemporal strain resolution are applied as wearable eco-friendly electronics for monitoring subtle physiological signals (e.g., mapping of arterial lines and sensing pulse waveforms) and large-strain actions (e.g., finger bending).
Collapse
Affiliation(s)
- Shin-Da Wu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
- Institute of Physical Chemistry, University of Hamburg, 20146, Hamburg, Germany
| | - Shan-Hui Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei, 10617, Taiwan
- Institute of Cellular and System Medicine, National Health Research Institutes, Miaoli, 35053, Taiwan
| | - Bendix Ketelsen
- Institute of Physical Chemistry, University of Hamburg, 20146, Hamburg, Germany
| | - Sophia C Bittinger
- Institute of Physical Chemistry, University of Hamburg, 20146, Hamburg, Germany
| | - Hendrik Schlicke
- Fraunhofer Center for Applied Nanotechnology CAN, 20146, Hamburg, Germany
| | - Horst Weller
- Institute of Physical Chemistry, University of Hamburg, 20146, Hamburg, Germany
- Fraunhofer Center for Applied Nanotechnology CAN, 20146, Hamburg, Germany
| | - Tobias Vossmeyer
- Institute of Physical Chemistry, University of Hamburg, 20146, Hamburg, Germany
| |
Collapse
|
2
|
Švarc T, Majerič P, Feizpour D, Jelen Ž, Zadravec M, Gomboc T, Rudolf R. Recovery Study of Gold Nanoparticle Markers from Lateral Flow Immunoassays. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5770. [PMID: 37687463 PMCID: PMC10488536 DOI: 10.3390/ma16175770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023]
Abstract
Lateral flow immunoassays (LFIAs) are a simple diagnostic device used to detect targeted analytes. Wasted and unused rapid antigen lateral flow immunoassays represent mass waste that needs to be broken down and recycled into new material components. The aim of this study was to recover gold nanoparticles that are used as markers in lateral flow immunoassays. For this purpose, a dissolution process with aqua regia was utilised, where gold nanoparticles were released from the lateral flow immunoassay conjugate pads. The obtained solution was then concentrated further with gold chloride salt (HAuCl4) so that it could be used for the synthesis of new gold nanoparticles in the process of ultrasonic spray pyrolysis (USP). Various characterisation methods including scanning electron microscopy, transmission electron microscopy, ultraviolet-visible spectroscopy and optical emission spectrometry with inductively coupled plasma were used during this study. The results of this study showed that the recovery of gold nanoparticles from lateral flow immunoassays is possible, and the newly synthesised gold nanoparticles represent the possibility for incorporation into new products.
Collapse
Affiliation(s)
- Tilen Švarc
- Faculty of Mechanical Engineering, University of Maribor, 2000 Maribor, Slovenia; (P.M.); (Ž.J.); (M.Z.); (T.G.); (R.R.)
| | - Peter Majerič
- Faculty of Mechanical Engineering, University of Maribor, 2000 Maribor, Slovenia; (P.M.); (Ž.J.); (M.Z.); (T.G.); (R.R.)
- Zlatarna Celje d.o.o., 3000 Celje, Slovenia
| | - Darja Feizpour
- Institute of Metals and Technology (IMT), 1000 Ljubljana, Slovenia;
| | - Žiga Jelen
- Faculty of Mechanical Engineering, University of Maribor, 2000 Maribor, Slovenia; (P.M.); (Ž.J.); (M.Z.); (T.G.); (R.R.)
| | - Matej Zadravec
- Faculty of Mechanical Engineering, University of Maribor, 2000 Maribor, Slovenia; (P.M.); (Ž.J.); (M.Z.); (T.G.); (R.R.)
| | - Timi Gomboc
- Faculty of Mechanical Engineering, University of Maribor, 2000 Maribor, Slovenia; (P.M.); (Ž.J.); (M.Z.); (T.G.); (R.R.)
| | - Rebeka Rudolf
- Faculty of Mechanical Engineering, University of Maribor, 2000 Maribor, Slovenia; (P.M.); (Ž.J.); (M.Z.); (T.G.); (R.R.)
- Zlatarna Celje d.o.o., 3000 Celje, Slovenia
| |
Collapse
|
3
|
Tsong JL, Robert R, Khor SM. Emerging trends in wearable glove-based sensors: A review. Anal Chim Acta 2023; 1262:341277. [PMID: 37179058 DOI: 10.1016/j.aca.2023.341277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/22/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
Glove-based wearable chemical sensors are universal analytical tools that provide surface analysis for various samples in dry or liquid form by swiping glove sensors on the sample surface. They are useful in crime scene investigation, airport security, and disease control for detecting illicit drugs, hazardous chemicals, flammables, and pathogens on various surfaces, such as foods and furniture. It overcomes the inability of most portable sensors to monitor solid samples. It outperforms most wearable sensors (e.g., contact lenses and mouthguard sensors) for healthcare monitoring by providing comfort that does not interfere with daily activities and reducing the risk of infection or other adverse health effects caused by prolonged usage. Detailed information is provided regarding the challenges and selection criteria for the desired glove materials and conducting nanomaterials for developing glove-based wearable sensors. Focusing on nanomaterials, various transducer modification techniques for various real-world applications are discussed. The steps taken by each study platform to address the existing issues are revealed, as are their benefits and drawbacks. The Sustainable Development Goals (SDGs) and strategies for properly disposing of used glove-based wearable sensors are critically evaluated. A glance at all the provided tables provides insight into the features of each glove-based wearable sensor and enables a quick comparison of their functionalities.
Collapse
Affiliation(s)
- Jia Ling Tsong
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Rodney Robert
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Sook Mei Khor
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Centre for Fundamental and Frontier Sciences in Nanostructure Self-Assembly, Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Centre for Innovation in Medical Engineering, Faculty of Engineering, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| |
Collapse
|
4
|
Insight into the Liquid–Liquid Extraction System AuCl4−/HCl/A327H+Cl− Ionic Liquid/Toluene. Processes (Basel) 2021. [DOI: 10.3390/pr9040608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The ionic liquid A327H+Cl− is generated by reaction of the tertiary amine A327 (industrial mixture of tri-octyl and tri-decyl amines) and hydrochloric acid solutions. In this study, the extraction of Au(III) by A327H+Cl− ionic liquid under various variables, including metal and ionic liquid concentrations, was investigated. Results indicate that A327H+AuCl4− is formed by an exothermic (ΔH° = −3 kJ/mol) reaction in the organic solution. Aqueous ionic strength influences the formation constant values, and the specific interaction theory (SIT) was used to estimate the interaction coefficient between AuCl4− and H+. Gold (III) was stripped using thiocyanate media, and from the strip solutions, gold was precipitated as gold nanoparticles.
Collapse
|
5
|
Oestreicher V, García CS, Pontiggia R, Rossi MB, Angelomé PC, Soler-Illia GJAA. E-waste upcycling for the synthesis of plasmonic responsive gold nanoparticles. WASTE MANAGEMENT (NEW YORK, N.Y.) 2020; 117:9-17. [PMID: 32805603 DOI: 10.1016/j.wasman.2020.07.037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/16/2020] [Accepted: 07/26/2020] [Indexed: 06/11/2023]
Abstract
One of the current challenges in circular economy is the ability to transform waste into valuable products. In this work, waste of electrical and electronic equipment (WEEE) was used as a gold source to prepare stable gold nanoparticles (AuNP). The proposed methodology involves a series of physical and chemical separation steps, carefully designed according to the complex nature of the selected WEEE and the targeted product. In a first step, pins from microprocessors were separated by mechanical treatments, allowing to concentrate gold in a metallic fraction. A two-step hydrometallurgical method was subsequently performed, to obtain a Au (III) enriched solution. Such solution was used as a secondary raw material to obtain AuNP. For that purpose, a specific synthetic method was developed, adapted to the high acidity and ionic strength of the solution. Thanks to the use of two easily available reducing agents (sodium citrate and ascorbic acid) and a polymeric stabilizer (PVP), it was possible to obtain high purity AuNP presenting a mixture of well-defined spherical and triangular shapes. These AuNP were finally deposited onto glass substrates and present a sensitive response to refractive index changes in the environment, a necessary condition towards application in optical sensors. In summary, this upcycling case study demonstrates that e-waste can successfully replace primary raw materials to obtain highly valuable and useful nanomaterials. These results highlight the potential of urban mining as a sustainable and circular approach to the development of nanotechnologies.
Collapse
Affiliation(s)
- Víctor Oestreicher
- Instituto de Nanosistemas, UNSAM, CONICET, 25 de mayo 1021, San Martín (1650), Buenos Aires, Argentina; Gerencia Química & Instituto de Nanociencia y Nanotecnología, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, CONICET, Av. Gral. Paz 1499, San Martín (1650), Buenos Aires, Argentina
| | - Carolina S García
- Gerencia Química & Instituto de Nanociencia y Nanotecnología, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, CONICET, Av. Gral. Paz 1499, San Martín (1650), Buenos Aires, Argentina; R&D&i Benito Roggio Ambiental, Buenos Aires, Argentina
| | | | | | - Paula C Angelomé
- Gerencia Química & Instituto de Nanociencia y Nanotecnología, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, CONICET, Av. Gral. Paz 1499, San Martín (1650), Buenos Aires, Argentina.
| | - Galo J A A Soler-Illia
- Instituto de Nanosistemas, UNSAM, CONICET, 25 de mayo 1021, San Martín (1650), Buenos Aires, Argentina.
| |
Collapse
|