1
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Igarashi A, Abe M, Kuroiwa S, Ohashi K, Yamada H. Enhancement of Refractive Index Sensitivity Using Small Footprint S-Shaped Double-Spiral Resonators for Biosensing. SENSORS (BASEL, SWITZERLAND) 2023; 23:6177. [PMID: 37448026 DOI: 10.3390/s23136177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
We demonstrate an S-shaped double-spiral microresonator (DSR) for detecting small volumes of analytes, such as liquids or gases, penetrating a microfluidic channel. Optical-ring resonators have been applied as label-free and high-sensitivity biosensors by using an evanescent field for sensing the refractive index of analytes. Enlarging the ring resonator size is a solution for amplifying the interactions between the evanescent field and biomolecules to obtain a higher refractive index sensitivity of the attached analytes. However, it requires a large platform of a hundred square millimeters, and 99% of the cavity area would not involve evanescent field sensing. In this report, we demonstrate the novel design of a Si-based S-shaped double-spiral resonator on a silicon-on-insulator substrate for which the cavity size was 41.6 µm × 88.4 µm. The proposed resonator footprint was reduced by 680 times compared to a microring resonator with the same cavity area. The fabricated resonator exposed more sensitive optical characteristics for refractive index biosensing thanks to the enhanced contact interface by a long cavity length of DSR structures. High quality factors of 1.8 × 104 were demonstrated for 1.2 mm length DSR structures, which were more than two times higher than the quality factors of microring resonators. A bulk sensitivity of 1410 nm/RIU was calculated for detecting 1 µL IPA solutions inside a 200 µm wide microchannel by using the DSR cavity, which had more than a 10-fold higher sensitivity than the sensitivity of the microring resonators. A DSR device was also used for the detection of 100 ppm acetone gas inside a closed bottle.
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Affiliation(s)
- Anh Igarashi
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
| | - Maho Abe
- Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
| | - Shigeki Kuroiwa
- R&D Group, KOKOROMI Inc., Shinjuku-ku, Tokyo 169-0051, Japan
| | - Keishi Ohashi
- R&D Group, KOKOROMI Inc., Shinjuku-ku, Tokyo 169-0051, Japan
| | - Hirohito Yamada
- Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
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2
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Wang J, Ma S, Wu Q, Xu Q, Wang J, Zhang R, Bai L, Li L, Liu H. Effects of testis testosterone deficiency on gene expression in the adrenal gland and skeletal muscle of ducks. Br Poult Sci 2023. [PMID: 36735924 DOI: 10.1080/00071668.2023.2176741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
1. Testosterone has an anabolic effect on skeletal muscle. The testes produce most of the testosterone in vivo, while the adrenal glands contribute smaller amounts. When testis testosterone is deficient the adrenal gland increases steroid hormone synthesis, which is referred to as compensatory testicular adaptation (CTA).2. To reveal the effects of testis testosterone deficiency on adrenal steroid hormones synthesis and skeletal muscle development, gene expression related to adrenal steroid hormones synthesis and skeletal muscle development were determined by RNA-seq.3. The results showed that castrating male ducks had significant effects on their body weight but no significant impact on cross-sectional area (CSA) or density of pectoral muscle fibres. In skeletal muscle protein metabolism, expression levels of the catabolic gene atrogin1/MAFbx and the anabolic gene eEF2 were significantly higher, with concomitant increases after castration. The adrenal glands' alteration of the steroid hormone 11β-hydroxylase (CYP11B1) was significantly lower following castration.4. Expression pattern analysis showed that the adrenal glands' glucocorticoid receptor (NR3C1/GR) had a potential regulatory relationship with the skeletal muscle-related genes (Pax7, mTOR, FBXO32, FOXO3, and FOXO4).5. The data showed that castration affected muscle protein metabolism, adrenal steroid and testosterone synthesis. In addition, it was speculated that, after castration, steroid hormones produced by the adrenal gland could have a compensatory effect, which might mediate the changes in skeletal muscle protein metabolism and development.
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Affiliation(s)
- J Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, P.R. China
| | - S Ma
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, P.R. China
| | - Q Wu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, P.R. China
| | - Q Xu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, P.R. China
| | - J Wang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, P.R. China
| | - R Zhang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, P.R. China
| | - L Bai
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, P.R. China
| | - L Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, P.R. China
| | - H Liu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, P.R. China
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3
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Akgönüllü S, Denizli A. Molecular imprinting-based sensors: Lab-on-chip integration and biomedical applications. J Pharm Biomed Anal 2023; 225:115213. [PMID: 36621283 DOI: 10.1016/j.jpba.2022.115213] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 12/16/2022] [Accepted: 12/26/2022] [Indexed: 12/28/2022]
Abstract
The innovative technology of a marketable lab-on-a-chip platform for point-of-care (POC) in vitro detection has recently attracted remarkable attention. The POC tests can significantly enhance the high standard of medicinal care. In the last decade, clinical diagnostic technology has been broadly advanced and successfully performed in several areas. It seems that lab-on-a-chip approaches play a significant role in these technologies. However, high-cost and time-consuming methods are increasing the challenge and the development of a cost-effective, rapid and efficient method for the detection of biomolecules is urgently needed. Recently, polymer-coated sensing platforms have been a promising area that can be employed in medical diagnosis, pharmaceutical bioassays, and environmental monitoring. The designed on-chip sensors are based on molecular imprinting polymers (MIPs) that use label-free detection technology. Molecular imprinting shines out as a potentially promising technique for creating artificial recognition material with molecular recognition sites. MIPs provide unique advantages such as excellent recognition specificity, high selectivity, and good reusability. This review article aims to define several methods using molecular imprinting for biomolecules and their incorporation with several lab-on-chip technologies to describe the most promising methods for the development of sensing systems based on molecularly imprinted polymers. The higher selectivity, more user-friendly operation is believed to provide MIP-based lab-on-a-chip devices with great potential academic and commercial value in on-site clinical diagnostics and other point-of-care assays.
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Affiliation(s)
- Semra Akgönüllü
- Division of Biochemistry, Department of Chemistry, Hacettepe University, Ankara, Turkey
| | - Adil Denizli
- Division of Biochemistry, Department of Chemistry, Hacettepe University, Ankara, Turkey.
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4
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Puumala LS, Grist SM, Morales JM, Bickford JR, Chrostowski L, Shekhar S, Cheung KC. Biofunctionalization of Multiplexed Silicon Photonic Biosensors. BIOSENSORS 2022; 13:bios13010053. [PMID: 36671887 PMCID: PMC9855810 DOI: 10.3390/bios13010053] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/10/2022] [Accepted: 12/23/2022] [Indexed: 05/28/2023]
Abstract
Silicon photonic (SiP) sensors offer a promising platform for robust and low-cost decentralized diagnostics due to their high scalability, low limit of detection, and ability to integrate multiple sensors for multiplexed analyte detection. Their CMOS-compatible fabrication enables chip-scale miniaturization, high scalability, and low-cost mass production. Sensitive, specific detection with silicon photonic sensors is afforded through biofunctionalization of the sensor surface; consequently, this functionalization chemistry is inextricably linked to sensor performance. In this review, we first highlight the biofunctionalization needs for SiP biosensors, including sensitivity, specificity, cost, shelf-stability, and replicability and establish a set of performance criteria. We then benchmark biofunctionalization strategies for SiP biosensors against these criteria, organizing the review around three key aspects: bioreceptor selection, immobilization strategies, and patterning techniques. First, we evaluate bioreceptors, including antibodies, aptamers, nucleic acid probes, molecularly imprinted polymers, peptides, glycans, and lectins. We then compare adsorption, bioaffinity, and covalent chemistries for immobilizing bioreceptors on SiP surfaces. Finally, we compare biopatterning techniques for spatially controlling and multiplexing the biofunctionalization of SiP sensors, including microcontact printing, pin- and pipette-based spotting, microfluidic patterning in channels, inkjet printing, and microfluidic probes.
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Affiliation(s)
- Lauren S. Puumala
- School of Biomedical Engineering, University of British Columbia, 2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
- Centre for Blood Research, University of British Columbia, 2350 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
| | - Samantha M. Grist
- School of Biomedical Engineering, University of British Columbia, 2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
- Centre for Blood Research, University of British Columbia, 2350 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
- Dream Photonics Inc., Vancouver, BC V6T 0A7, Canada
| | - Jennifer M. Morales
- Army Research Laboratory, US Army Combat Capabilities Development Command, 2800 Powder Mill Rd., Adelphi, MD 20783, USA
| | - Justin R. Bickford
- Army Research Laboratory, US Army Combat Capabilities Development Command, 2800 Powder Mill Rd., Adelphi, MD 20783, USA
| | - Lukas Chrostowski
- Dream Photonics Inc., Vancouver, BC V6T 0A7, Canada
- Department of Electrical and Computer Engineering, University of British Columbia, 2332 Main Mall, Vancouver, BC V6T 1Z4, Canada
- Stewart Blusson Quantum Matter Institute, University of British Columbia, 2355 East Mall, Vancouver, BC V6T 1Z4, Canada
| | - Sudip Shekhar
- Dream Photonics Inc., Vancouver, BC V6T 0A7, Canada
- Department of Electrical and Computer Engineering, University of British Columbia, 2332 Main Mall, Vancouver, BC V6T 1Z4, Canada
| | - Karen C. Cheung
- School of Biomedical Engineering, University of British Columbia, 2222 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
- Centre for Blood Research, University of British Columbia, 2350 Health Sciences Mall, Vancouver, BC V6T 1Z3, Canada
- Department of Electrical and Computer Engineering, University of British Columbia, 2332 Main Mall, Vancouver, BC V6T 1Z4, Canada
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5
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Çimen D. Testosterone Imprinted poly(HEMA‐MAA) Nanoparticles Based Surface Plasmon Resonance Sensor for Detection of Testosterone. ChemistrySelect 2022. [DOI: 10.1002/slct.202103949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Duygu Çimen
- Hacettepe University Department of Chemistry Beytepe Ankara Turkey
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6
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Huml L, Tauchen J, Rimpelová S, Holubová B, Lapčík O, Jurášek M. Advances in the Determination of Anabolic-Androgenic Steroids: From Standard Practices to Tailor-Designed Multidisciplinary Approaches. SENSORS (BASEL, SWITZERLAND) 2021; 22:4. [PMID: 35009549 PMCID: PMC8747103 DOI: 10.3390/s22010004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 12/06/2021] [Accepted: 12/14/2021] [Indexed: 12/12/2022]
Abstract
Anabolic-androgenic steroids (AASs), a group of compounds frequently misused by athletes and, unfortunately, also by the general population, have lately attracted global attention; thus, significant demands for more precise, facile, and rapid AAS detection have arisen. The standard methods ordinarily used for AAS determination include liquid and gas chromatography coupled with mass spectrometry. However, good knowledge of steroid metabolism, pretreatment of samples (such as derivatization), and well-trained operators of the instruments are required, making this procedure expensive, complicated, and not routinely applicable. In the drive to meet current AAS detection demands, the scientific focus has shifted to developing novel, tailor-made approaches leading to time- and cost-effective, routine, and field-portable methods for AAS determination in various matrices, such as biological fluids, food supplements, meat, water, or other environmental components. Therefore, herein, we present a comprehensive review article covering recent advances in AAS determination, with a strong emphasis on the increasingly important role of chemically designed artificial sensors, biosensors, and antibody- and fluorescence-based methods.
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Affiliation(s)
- Lukáš Huml
- Department of Chemistry of Natural Compounds, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (O.L.); (M.J.)
| | - Jan Tauchen
- Department of Food Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, 16500 Prague, Czech Republic;
| | - Silvie Rimpelová
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic;
| | - Barbora Holubová
- Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic;
| | - Oldřich Lapčík
- Department of Chemistry of Natural Compounds, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (O.L.); (M.J.)
| | - Michal Jurášek
- Department of Chemistry of Natural Compounds, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (O.L.); (M.J.)
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7
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Yang Z, Wang Y, Su C, Shao L, He JJ, Li M. Thermo-Optical Tuning Cascaded Double Ring Sensor with Large Measurement Range. SENSORS (BASEL, SWITZERLAND) 2020; 20:s20185149. [PMID: 32916987 PMCID: PMC7570838 DOI: 10.3390/s20185149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/08/2020] [Accepted: 09/08/2020] [Indexed: 06/11/2023]
Abstract
In this paper, a thermo-optic tuning optical waveguide sensor system based on a cascaded double micro-ring resonator is investigated. The system consists of a micro-ring resonator with the microheater as a reference ring and a micro-ring resonator with removing the upper cladding layers as a sensing ring, combined with a microfluidic control. The refractive index change of the sample is measured by the electric power change of the microheater. The experimental results show that the sensitivity of the thermo-optic tuning is 34.231 W/RIU (refractive index units), and the measurement range is 4.325 × 10-3 RIU, almost eight times larger than that of the cascaded double micro-ring resonator without thermo-optic tuning for the intensity interrogation.
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Affiliation(s)
- Zhiping Yang
- Department of Optical Engineering, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China; (Z.Y.); (Y.W.)
| | - Yanlu Wang
- Department of Optical Engineering, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China; (Z.Y.); (Y.W.)
| | - Chang Su
- State Key Laboratory of Modern Optical Instrumentation, Centre for Integrated Optoelectronics, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China; (C.S.); (J.-J.H.)
| | - Liyang Shao
- Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China;
| | - Jian-Jun He
- State Key Laboratory of Modern Optical Instrumentation, Centre for Integrated Optoelectronics, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China; (C.S.); (J.-J.H.)
| | - Mingyu Li
- Department of Optical Engineering, School of Opto-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China; (Z.Y.); (Y.W.)
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8
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Chiappini A, Pasquardini L, Bossi AM. Molecular Imprinted Polymers Coupled to Photonic Structures in Biosensors: The State of Art. SENSORS (BASEL, SWITZERLAND) 2020; 20:E5069. [PMID: 32906637 PMCID: PMC7570731 DOI: 10.3390/s20185069] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 08/25/2020] [Accepted: 09/02/2020] [Indexed: 12/14/2022]
Abstract
Optical sensing, taking advantage of the variety of available optical structures, is a rapidly expanding area. Over recent years, whispering gallery mode resonators, photonic crystals, optical waveguides, optical fibers and surface plasmon resonance have been exploited to devise different optical sensing configurations. In the present review, we report on the state of the art of optical sensing devices based on the aforementioned optical structures and on synthetic receptors prepared by means of the molecular imprinting technology. Molecularly imprinted polymers (MIPs) are polymeric receptors, cheap and robust, with high affinity and selectivity, prepared by a template assisted synthesis. The state of the art of the MIP functionalized optical structures is critically discussed, highlighting the key progresses that enabled the achievement of improved sensing performances, the merits and the limits both in MIP synthetic strategies and in MIP coupling.
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Affiliation(s)
- Andrea Chiappini
- Institute of Photonics and Nanotechnologies (IFN-CNR) CSMFO Laboratory and Fondazione Bruno Kessler (FBK) Photonics Unit, via alla Cascata 56/C, 38123 Povo Trento, Italy;
| | | | - Alessandra Maria Bossi
- Department of Biotechnology, University of Verona, Cà Vignal 1, Strada Le Grazie 15, 37134 Verona, Italy
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9
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Enhanced Sensitivity of Microring Resonator-Based Sensors Using the Finite Difference Time Domain Method to Detect Glucose Levels for Diabetes Monitoring. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10124191] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The properties of light and its interaction with biological analytes have made it possible to design sophisticated and reliable optical-based biomedical sensors. In this paper, we report the simulation, design, and fabrication of microring resonator (MRR)-based sensors for the detection of diabetic glucose levels. Electron Beam Lithography (EBL) with 1:1 hydrogen silsesquioxane (HSQ) negative tone resist were used to fabricate MRR on a Silicon-on-Insulator (SOI) platform. Scanning Electron Microscopy (SEM) was then used to characterize the morphology of the MRR device. The full-width at half-maximum (FWHM) and quality factors of MRR were obtained by using a tunable laser source (TLS) and optical spectrum analyzer (OSA). In this paper, the three-dimensional Finite Difference Time Domain (3D FDTD) approach has been used to simulate the proposed design. The simulation results show an accurate approximation with the experimental results. Next, the sensitivity of MRR-based sensors to detect glucose levels is obtained. The sensitivity value for glucose level detection in the range 0% to 18% is 69.44 nm/RIU. This proved that our MRR design has a great potential as a sensor to detect diabetic glucose levels.
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10
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Liu KH, O’Hare D, Thomas JL, Guo HZ, Yang CH, Lee MH. Self-assembly Synthesis of Molecularly Imprinted Polymers for the Ultrasensitive Electrochemical Determination of Testosterone. BIOSENSORS 2020; 10:E16. [PMID: 32120922 PMCID: PMC7146556 DOI: 10.3390/bios10030016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/21/2020] [Accepted: 02/25/2020] [Indexed: 05/05/2023]
Abstract
Molecularly imprinted polymers (MIPs) can often bind target molecules with high selectivity and specificity. When used as MIPs, conductive polymers may have unique binding capabilities; they often contain aromatic rings and functional groups, which can undergo π-π and hydrogen bonding interactions with similarly structured target (or template) molecules. In this work, an electrochemical method was used to optimize the synthetic self-assembly of poly(aniline-co-metanilic acid) and testosterone, forming testosterone-imprinted electronically conductive polymers (TIECPs) on sensing electrodes. The linear sensing range for testosterone was from 0.1 to 100 pg/mL, and the limit of detection was as low as ~pM. Random urine samples were collected and diluted 1000-fold to measure testosterone concentration using the above TIECP sensors; results were compared with a commercial ARCHITECT ci 8200 system. The testosterone concentrations in the tested samples were in the range of 0.33 ± 0.09 to 9.13 ± 1.33 ng/mL. The mean accuracy of the TIECP-coated sensors was 90.3 ± 7.0%.
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Affiliation(s)
- Kai-Hsi Liu
- Department of Internal Medicine, Division of Cardiology, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 813, Taiwan;
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan;
| | - Danny O’Hare
- Department of Bioengineering, Imperial College, London SW7 2BY, UK;
| | - James L. Thomas
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA;
| | - Han-Zhang Guo
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan;
| | - Chien-Hsin Yang
- Department of Chemical and Materials Engineering, National University of Kaohsiung, Kaohsiung 81148, Taiwan;
| | - Mei-Hwa Lee
- Department of Materials Science and Engineering, I-Shou University, Kaohsiung 84001, Taiwan
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11
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Cardenosa-Rubio MC, Robison HM, Bailey RC. Recent advances in environmental and clinical analysis using microring resonator-based sensors. CURRENT OPINION IN ENVIRONMENTAL SCIENCE & HEALTH 2019; 10:38-46. [PMID: 31903443 PMCID: PMC6941741 DOI: 10.1016/j.coesh.2019.09.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Progress in the development of biosensors has dramatically improved analytical techniques. Biosensors have advantages over more conventional analytical techniques arising from attributes such as straightforward analyses, higher throughput, miniaturization, smaller sample input, and lower cost. Microring optical resonators have emerged in the area of optical sensors as an exceptional choice due to their sensitivity, ease of fabrication, multiplexity capability and label-free detection. In this paper, the sensing principle of these sensors is described. In addition, we summarize and highlight their most recent and relevant applications in environmental and clinical detection analysis.
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Affiliation(s)
- Maria C. Cardenosa-Rubio
- University of Michigan, Department of Chemistry, 930 N. University Ave., Ann Arbor, MI 48104 U.S.A
| | - Heather M. Robison
- University of Michigan, Department of Chemistry, 930 N. University Ave., Ann Arbor, MI 48104 U.S.A
| | - Ryan C. Bailey
- University of Michigan, Department of Chemistry, 930 N. University Ave., Ann Arbor, MI 48104 U.S.A
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12
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Molecularly Imprinted Polymers for Removal of Metal Ions: An Alternative Treatment Method. Biomimetics (Basel) 2018; 3:biomimetics3040038. [PMID: 31105259 PMCID: PMC6352701 DOI: 10.3390/biomimetics3040038] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Revised: 10/24/2018] [Accepted: 11/20/2018] [Indexed: 02/07/2023] Open
Abstract
Aquatic and terrestrial environment and human health have been seriously threatened with the release of metal-containing wastewater by the rapid growth in the industry. There are various methods which have been used for removal of ions from the environment, such as membrane filtration, ion exchange, membrane assisted liquid extraction and adsorption. As a sort of special innovation, a polymerization technique, namely molecular imprinting is carried out by specific identification for the target by mixing it with a functional monomer. After the polymerization occurred, the target ion can be removed with suitable methods. At the end of this process, specific cavities, namely binding sites, are able to recognize target ions selectively. However, the selectivity of the molecularly imprinted polymer is variable not only because of the type of ligand but also charge, size coordination number, and geometry of the target ion. In this review, metal ion-imprinted polymeric materials that can be applied for metal ion removal from different sources are discussed and exemplified briefly with different metal ions.
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13
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Kadhem AJ, Xiang S, Nagel S, Lin CH, Fidalgo de Cortalezzi M. Photonic Molecularly Imprinted Polymer Film for the Detection of Testosterone in Aqueous Samples. Polymers (Basel) 2018; 10:polym10040349. [PMID: 30966384 PMCID: PMC6415058 DOI: 10.3390/polym10040349] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 12/17/2022] Open
Abstract
The detection of testosterone in aqueous solutions is a difficult task due to the low concentration levels that are relevant in environmental and physiological samples. Current analytical methods are expensive and/or complex. To address this issue, we fabricated a molecularly imprinted polymer (MIP) photonic film for the detection of testosterone in water. The films were obtained using colloidal crystals as templates for the pore morphology. Monodispersed silica particles with an average diameter 330 nm were used to obtain the colloidal crystal by vertical deposition. A solution of acrylic acid with testosterone as the imprinted template was infiltrated in the colloidal crystal and polymerized via bulk polymerization; the particles were then removed by acid etching and the testosterone eluted by a suitable solvent. The material was characterized by FTIR, swelling experiments and microscopy; MIPs were investigated by equilibrium rebinding, kinetics and reuse experiments. The results showed that the MIPs exhibited selectivity to the template, a 30-min equilibration time and stability after at least six cycles of use and regeneration. After incubation, the reflectance spectra of the films showed a shift of the Bragg diffraction peak that correlated with testosterone concentration in the 5–100 ppb range.
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Affiliation(s)
- Abbas J Kadhem
- Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USA.
| | - Shuting Xiang
- Department of Civil and Environmental Engineering, University of Missouri, Columbia, MO 65211, USA.
| | - Susan Nagel
- Department of Obstetrics, Gynecology and Women's Health, University of Missouri, Columbia, MO 65211, USA.
| | - Chung-Ho Lin
- School of Natural Resources, University of Missouri, Columbia, MO 65211, USA.
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14
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Fourou H, Braiek M, Bonhomme A, Lagarde F, Zazoua A, Jaffrezic-Renault N. Voltammetric Sensor Based on a Double-Layered Molecularly Imprinted Polymer for Testosterone. ANAL LETT 2017. [DOI: 10.1080/00032719.2017.1298118] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Hana Fourou
- Institute of Analytical Sciences, University of Lyon, Villeurbanne, France
- Université de Jijel, Jijel, Algeria
- Laboratory LMEPA, Université de Bordj Bou Arreridj, Bordj Bou Arreridj, Algeria
| | - Mohamed Braiek
- Institute of Analytical Sciences, University of Lyon, Villeurbanne, France
| | - Anne Bonhomme
- Institute of Analytical Sciences, University of Lyon, Villeurbanne, France
| | - Florence Lagarde
- Institute of Analytical Sciences, University of Lyon, Villeurbanne, France
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Kellens E, Bové H, Conradi M, D’Olieslaeger L, Wagner P, Landfester K, Junkers T, Ethirajan A. Improved Molecular Imprinting Based on Colloidal Particles Made from Miniemulsion: A Case Study on Testosterone and Its Structural Analogues. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00130] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Evelien Kellens
- Institute for Materials Research, Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
| | - Hannelore Bové
- Institute for Materials Research, Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
| | - Matthias Conradi
- Institute for Materials Research, Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
| | - Lien D’Olieslaeger
- Institute for Materials Research, Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
| | - Patrick Wagner
- Institute for Materials Research, Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Tanja Junkers
- Institute for Materials Research, Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
| | - Anitha Ethirajan
- Institute for Materials Research, Hasselt University, Wetenschapspark 1 and Agoralaan D, 3590 Diepenbeek, Belgium
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