1
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Pansare AV, Pansare SV, Pansare PV, More BP, Nagarkar AA, Barbezat M, Donde KJ, Patil VR, Terrasi GP. Economical gold recovery cycle from bio-sensing AuNPs: an application for nanowaste and COVID-19 testing kits. Dalton Trans 2022; 51:14686-14699. [PMID: 36098266 DOI: 10.1039/d2dt01405j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
We report the controlled growth of biologically active compounds: gold nanoparticles (AuNPs) in various shapes, including their green synthesis, characterization, and studies of their applications towards biological, degradation and recycling. Using spectroscopic methods, studies on responsive binding mechanisms of AuNPs with biopolymers herring sperm deoxyribonucleic acid (hsDNA), bovine serum albumin (BSA), dyes degradation study, and exquisitely gold separation studies/recovery from nanowaste, COVID-19 testing kits, and pregnancy testing kits are discussed. The sensing ability of the AuNPs with biopolymers was investigated via various analytical techniques. The rate of degradation of various dyes in the presence and absence of AuNPs was studied by deploying stirring, IR, solar, and UV-Vis methods. AuNPs were found to be the most active cytotoxic agent against human breast cancer cell lines such as MCF-7 and MDAMB-468. Furthermore, an economical process for the recovery of gold traces from nanowaste, COVID-19 detection kits, and pregnancy testing kits was developed using inexpensive and eco-friendly α-cyclodextrin sugar. This method was found to be easy and safest in comparison with the universally accepted cyanidation process. In the future, small gold jewelry makers and related industries would benefit from the proposed gold-recycling process and it might contribute to their socio-economic growth. The methodologies proposed are also beneficial for trace-level forensic investigation.
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Affiliation(s)
- Amol V Pansare
- Composite group, Mechanical Systems Engineering, Swiss Federal Laboratories for Materials Science and Technology-Empa, 8600 Dübendorf, Switzerland.
| | - Shubham V Pansare
- Department of Chemistry, University of Mumbai, Santacruz (E), Mumbai 400098, India.
| | - Priyanka V Pansare
- Ramnarain Ruia Autonomous College, University of Mumbai, Matunga (E), India.
| | - Bhausaheb P More
- Directorate of Forensic Science Laboratories Mumbai, Home Department, Government of Maharashtra-98, India
| | - Amit A Nagarkar
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, MA, 02138 USA
| | - Michel Barbezat
- Composite group, Mechanical Systems Engineering, Swiss Federal Laboratories for Materials Science and Technology-Empa, 8600 Dübendorf, Switzerland.
| | - Kamini J Donde
- Ramnarain Ruia Autonomous College, University of Mumbai, Matunga (E), India.
| | - Vishwanath R Patil
- Department of Chemistry, University of Mumbai, Santacruz (E), Mumbai 400098, India.
| | - Giovanni P Terrasi
- Composite group, Mechanical Systems Engineering, Swiss Federal Laboratories for Materials Science and Technology-Empa, 8600 Dübendorf, Switzerland.
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2
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Gupta P, Gholami Derami H, Mehta D, Yilmaz H, Chakrabartty S, Raman B, Singamaneni S. In Situ Grown Gold Nanoisland-Based Chemiresistive Electronic Nose for Sniffing Distinct Odor Fingerprints. ACS APPLIED MATERIALS & INTERFACES 2022; 14:3207-3217. [PMID: 34995447 DOI: 10.1021/acsami.1c22173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Chemiresistors based on metal-insulator-metal structures are attractive transducers for rapid tracing of a wide repertoire of (bio)chemical species in the vapor phase. However, current fabrication techniques suffer greatly from sensor-to-sensor variability, limiting their reproducible and reliable application in real-world settings. We demonstrate a novel, facile, and ubiquitously applicable strategy for fabricating highly reliable and reproducible organothiol-functionalized gold nanoisland-based chemiresistors. The novel fabrication technique involves iterative in situ seeding, growth, and surface functionalization of gold nanoislands on an interdigitated electrode, which in turn generates a multi-layered densely packed continuous gold nanoisland film. The chemiresistors fabricated using the proposed strategy exhibited high sensor-to-sensor reproducibility owing to the controlled iterative seeding and growth-based fabrication technique, long-term stability, and specificity for detection and identification of a wide variety of volatile organic compounds. Upon exposure to a specific odor, the chemiresistor ensemble comprised nine different chemical functionalities and produced a unique and discernable odor fingerprint that is reproducible for at least up to 90 days. Integrating these odor fingerprints with a simple linear classifier was found to be sufficient for discriminating between all six odors used in this study. We believe that the fabrication strategy presented here, which is agnostic to chemical functionality, enables fabrication of highly reliable and reproducible sensing elements, and thereby an adaptable electronic nose for a wide variety of real-world gas sensing applications.
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Affiliation(s)
- Prashant Gupta
- Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Hamed Gholami Derami
- Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Darshit Mehta
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Huzeyfe Yilmaz
- Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Shantanu Chakrabartty
- Department of Electrical and Systems Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Baranidharan Raman
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
| | - Srikanth Singamaneni
- Department of Mechanical Engineering and Materials Science, and Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, United States
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3
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Nanogap dielectrophoresis combined with buffer exchange for detecting protein binding to trapped bioparticles. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Montes-García V, Squillaci MA, Diez-Castellnou M, Ong QK, Stellacci F, Samorì P. Chemical sensing with Au and Ag nanoparticles. Chem Soc Rev 2021; 50:1269-1304. [PMID: 33290474 DOI: 10.1039/d0cs01112f] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Noble metal nanoparticles (NPs) are ideal scaffolds for the fabrication of sensing devices because of their high surface-to-volume ratio combined with their unique optical and electrical properties which are extremely sensitive to changes in the environment. Such characteristics guarantee high sensitivity in sensing processes. Metal NPs can be decorated with ad hoc molecular building blocks which can act as receptors of specific analytes. By pursuing this strategy, and by taking full advantage of the specificity of supramolecular recognition events, highly selective sensing devices can be fabricated. Besides, noble metal NPs can also be a pivotal element for the fabrication of chemical nose/tongue sensors to target complex mixtures of analytes. This review highlights the most enlightening strategies developed during the last decade, towards the fabrication of chemical sensors with either optical or electrical readout combining high sensitivity and selectivity, along with fast response and full reversibility, with special attention to approaches that enable efficient environmental and health monitoring.
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Affiliation(s)
- Verónica Montes-García
- University of Strasbourg, CNRS, ISIS UMR 7006, 8 Allée Gaspard Monge, F-67000 Strasbourg, France.
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5
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Fu Q, Li Z, Fu F, Chen X, Song J, Yang H. Stimuli-Responsive Plasmonic Assemblies and Their Biomedical Applications. NANO TODAY 2021; 36:101014. [PMID: 33250931 PMCID: PMC7687854 DOI: 10.1016/j.nantod.2020.101014] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Among the diverse development of stimuli-responsive assemblies, plasmonic nanoparticle (NP) assemblies functionalized with responsive molecules are of a major interest. In this review, we outline a comprehensive and up-to-date overview of recently reported studies on in vitro and in vivo assembly/disassembly and biomedical applications of plasmonic NPs, wherein stimuli such as enzymes, light, pH, redox potential, temperature, metal ions, magnetic or electric field, and/or multi-stimuli were involved. Stimuli-responsive assemblies have been applied in various biomedical fields including biosensors, surfaced-enhanced Raman scattering (SERS), photoacoustic (PA) imaging, multimodal imaging, photo-activated therapy, enhanced X-ray therapy, drug release, stimuli-responsive aggregation-induced cancer therapy, and so on. The perspectives on the use of stimuli-responsive plasmonic assemblies are discussed by addressing future scientific challenges involving assembly/disassembly strategies and applications.
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Affiliation(s)
- Qinrui Fu
- MOE key laboratory for analytical science of food safety and biology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Zhi Li
- MOE key laboratory for analytical science of food safety and biology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Fengfu Fu
- MOE key laboratory for analytical science of food safety and biology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health (NIH), Bethesda, Maryland 20892, United States
| | - Jibin Song
- MOE key laboratory for analytical science of food safety and biology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Huanghao Yang
- MOE key laboratory for analytical science of food safety and biology, College of Chemistry, Fuzhou University, Fuzhou 350108, China
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6
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Ohannesian N, Li J, Misbah I, Zhao F, Shih WC. Directed Concentrating of Micro-/Nanoparticles via Near-Infrared Laser Generated Plasmonic Microbubbles. ACS OMEGA 2020; 5:32481-32489. [PMID: 33376885 PMCID: PMC7758966 DOI: 10.1021/acsomega.0c04610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 11/05/2020] [Indexed: 05/11/2023]
Abstract
Directed concentrating of micro- and nanoparticles via laser-generated plasmonic microbubbles in a liquid environment is an emerging technology. For effective heating, visible light has been primarily employed in existing demonstrations. In this paper, we demonstrate a new plasmonic platform based on nanoporous gold disk (NPGD) array. Thanks to the highly tunable localized surface plasmon resonance of the NPGD array, microbubbles of controlled size can be generated by near-infrared (NIR) light. Using NIR light provides several key advantages over visible light in less interference with standard microscopy and fluorescence imaging, preventing fluorescence photobleaching, less susceptible to absorption and scattering in turbid biological media, and much reduced photochemistry, phototoxicity, and so forth. The large surface-to-volume ratio of NPGD further facilitates the heat transfer from these gold nanoheaters to the surroundings. While the microbubble is formed, the surrounding liquid circulates and direct microparticles randomly dispersed in the liquid to the bottom NPGD surface, which can be made to yield a unique collection of 3D hollow dome microstructures with bubbles larger than 5 μm. Such capability can also be employed in concentrating suspended colloidal nanoparticles at desirable sites and with the preferred configuration enhancing the sensor performance. Specifically, the interaction among concentrated nanoparticles and their interactions with the underlying substrate have been investigated for the first time. These collections have been characterized using optical microscopy, scanning electron microscopy, hyperspectral localized surface plasmon resonance imaging, and hyperspectral Raman imaging. In addition to various micro- and nanoparticles, the plasmonic microbubbles are also shown to collect biological cells and extracellular nanovesicles such as exosomes. By using a spatial light modulator to project the laser in arbitrary patterns, parallel concentrating can be achieved to fabricate an array of clusters.
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Affiliation(s)
- Nareg Ohannesian
- Department
of Electrical and Computer Engineering, University of Houston, 4800 Calhoun Road, Houston, Texas 77204, United
States
| | - Jingting Li
- Department
of Electrical and Computer Engineering, University of Houston, 4800 Calhoun Road, Houston, Texas 77204, United
States
| | - Ibrahim Misbah
- Department
of Electrical and Computer Engineering, University of Houston, 4800 Calhoun Road, Houston, Texas 77204, United
States
| | - Fusheng Zhao
- Department
of Electrical and Computer Engineering, University of Houston, 4800 Calhoun Road, Houston, Texas 77204, United
States
| | - Wei-Chuan Shih
- Department
of Electrical and Computer Engineering, University of Houston, 4800 Calhoun Road, Houston, Texas 77204, United
States
- Department
of Biomedical Engineering, University of
Houston, 4800 Calhoun
Road, Houston, Texas 77204, United States
- Department
of Chemistry, University of Houston, 4800 Calhoun Road, Houston, Texas 77204, United States
- Program
of Materials Science and Engineering, University
of Houston, 4800 Calhoun
Road, Houston, Texas 77204, United States
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7
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Zhou T, Chen J, Kropp E, Kulinsky L. Guided Electrokinetic Assembly of Polystyrene Microbeads onto Photopatterned Carbon Electrode Arrays. ACS APPLIED MATERIALS & INTERFACES 2020; 12:35647-35656. [PMID: 32706587 DOI: 10.1021/acsami.0c08266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Assembly of microdevices from constituent parts currently relies on slow serial steps via direct assembly processes such as pick-and-place operations. Template Electrokinetic Assembly (TEA), a guided, noncontact assembly process, is presented in this work as a promising alternative to serial assembly processes. To characterize the process and its implementation of electrokinetic, dielectrophoretic, and electro-osmotic phenomena, we conducted studies to examine the assembly of polymer microparticles at specific locations on glassy carbon interdigitated electrode arrays (IDEAs). The IDEAs are coated with a layer of lithographically patterned resist, so that when an AC electric field is applied to the IDEA, microparticles suspended in the aqueous solution are attracted to the open regions of the electrodes not covered by photoresist. Interplay between AC electro-osmosis and dielectrophoretic forces guides 1 and 5 μm diameter polystyrene beads to assemble in regions, or "wells", uncovered by photoresist atop the electrodes. It was discovered that AC electro-osmosis under an applied frequency of 1 kHz is sufficient to effectively agglomerate 1 μm beads in the wells, whereas a stepwise process involving the application of a 1 MHz signal, followed by a 1 kHz signal, is required for the positioning of 5 μm beads, which are mainly affected by dielectrophoretic forces. Permanent entrapment of the microparticles is then demonstrated via the electropolymerization process of the conducting polymer polypyrrole.
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Affiliation(s)
- Tuo Zhou
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, 5200 Engineering Hall, Irvine, California 92627, United States
- Materials and Manufacturing Technology, University of California, Irvine, 5200 Engineering Hall, Irvine, California 92697, United States
| | - Jingyuan Chen
- Department of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, HIT Campus G908, Shenzhen, Guangdong 518055, P.R. China
| | - Ethan Kropp
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, 5200 Engineering Hall, Irvine, California 92627, United States
| | - Lawrence Kulinsky
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, 5200 Engineering Hall, Irvine, California 92627, United States
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8
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Tong W, Wang Y, Bian Y, Wang A, Han N, Chen Y. Sensitive Cross-Linked SnO 2:NiO Networks for MEMS Compatible Ethanol Gas Sensors. NANOSCALE RESEARCH LETTERS 2020; 15:35. [PMID: 32025974 PMCID: PMC7002749 DOI: 10.1186/s11671-020-3269-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 01/27/2020] [Indexed: 05/06/2023]
Abstract
Nowadays, it is still technologically challenging to prepare highly sensitive sensing films using microelectrical mechanical system (MEMS) compatible methods for miniaturized sensors with low power consumption and high yield. Here, sensitive cross-linked SnO2:NiO networks were successfully fabricated by sputtering SnO2:NiO target onto the etched self-assembled triangle polystyrene (PS) microsphere arrays and then ultrasonically removing the PS microsphere templates in acetone. The optimum line width (~ 600 nm) and film thickness (~ 50 nm) of SnO2:NiO networks were obtained by varying the plasma etching time and the sputtering time. Then, thermal annealing at 500 °C in H2 was implemented to activate and reorganize the as-deposited amorphous SnO2:NiO thin films. Compared with continuous SnO2:NiO thin film counterparts, these cross-linked films show the highest response of ~ 9 to 50 ppm ethanol, low detection limits (< 5 ppm) at 300 °C, and also high selectivity against NO2, SO2, NH3, C7H8, and acetone. The gas-sensing enhancement could be mainly attributed to the creating of more active adsorption sites by increased stepped surface in cross-linked SnO2:NiO network. Furthermore, this method is MEMS compatible and of generality to effectively fabricate other cross-linked sensing films, showing the promising potency in the production of low energy consumption and wafer-scale MEMS gas sensors.
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Affiliation(s)
- Weiguang Tong
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Environmentally Harmful Chemicals Analysis, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Ying Wang
- Department of Physics, School of Science, Beijing Jiaotong University, Beijing, 100044, China.
| | - Yuzhi Bian
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Anqi Wang
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
| | - Ning Han
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China.
| | - Yunfa Chen
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, China
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9
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Müller KH, Patel N, Hubble LJ, Cooper JS, Chow E. Strong enhancement of gold nanoparticle chemiresistor response to low-partitioning organic analytes induced by pre-exposure to high partitioning organics. Phys Chem Chem Phys 2020; 22:9117-9123. [PMID: 32301473 DOI: 10.1039/c9cp06849j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Exposing a thiol-functionalised gold nanoparticle film chemiresistor to methanol in aqueous solution results in only a small electric current response as the thiol ligand/water partition coefficient of methanol is small, leading to only minor swelling of the chemiresistor film. Nevertheless, the current response to methanol can be enhanced if the chemiresistor becomes pre-exposed to a molecule with a large ligand/water partition coefficient P (e.g. octane with Po = 104.3). The large response enhancement is achieved because methanol, when added to an aqueous solution of octane, lowers the large initial partition coefficient of octane. Octane exiting the thiol ligands then leads to strong film shrinkage resulting in a relative current change much greater than the one otherwise induced by methanol alone. This was theoretically modelled for octane and heptane (Ph = 103.6). A strong response enhancement to methanol (>20 times) was observed experimentally by exposure to 2 ppm octane compared to direct testing of methanol in aqueous solution. Besides octane and heptane, molecules with P > 107 (e.g. permethrin) can theoretically be used to provide enhancement factors of several orders of magnitude. For practical reasons, heptane and octane saturate more quickly, thus enabling more rapid detection of methanol than higher P organic molecules.
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Affiliation(s)
| | - Nereus Patel
- CSIRO Manufacturing, Lindfield, NSW 2070, Australia.
| | - Lee J Hubble
- CSIRO Manufacturing, Lindfield, NSW 2070, Australia.
| | | | - Edith Chow
- CSIRO Manufacturing, Lindfield, NSW 2070, Australia.
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10
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Classification of Tea Aromas Using Multi-Nanoparticle Based Chemiresistor Arrays. SENSORS 2019; 19:s19112547. [PMID: 31167394 PMCID: PMC6603602 DOI: 10.3390/s19112547] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 12/03/2022]
Abstract
Nanoparticle based chemical sensor arrays with four types of organo-functionalized gold nanoparticles (AuNPs) were introduced to classify 35 different teas, including black teas, green teas, and herbal teas. Integrated sensor arrays were made using microfabrication methods including photolithography and lift-off processing. Different types of nanoparticle solutions were drop-cast on separate active regions of each sensor chip. Sensor responses, expressed as the ratio of resistance change to baseline resistance (ΔR/R0), were used as input data to discriminate different aromas by statistical analysis using multivariate techniques and machine learning algorithms. With five-fold cross validation, linear discriminant analysis (LDA) gave 99% accuracy for classification of all 35 teas, and 98% and 100% accuracy for separate datasets of herbal teas, and black and green teas, respectively. We find that classification accuracy improves significantly by using multiple types of nanoparticles compared to single type nanoparticle arrays. The results suggest a promising approach to monitor the freshness and quality of tea products.
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11
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Tapio K, Shao D, Auer S, Tuppurainen J, Ahlskog M, Hytönen VP, Toppari JJ. A DNA-nanoparticle actuator enabling optical monitoring of nanoscale movements induced by an electric field. NANOSCALE 2018; 10:19297-19309. [PMID: 30209452 DOI: 10.1039/c8nr05535a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Merging biological and non-biological matter to fabricate nanoscale assemblies with controllable motion and function is of great interest due to its potential application, for example, in diagnostics and biosensing. Here, we have constructed a DNA-based bionanoactuator that interfaces with biological and non-biological matter via an electric field in a reversibly controllable fashion. The read-out of the actuator is based on motion-induced changes in the plasmon resonance of a gold nanoparticle immobilized to a gold surface by single stranded DNA. The motion of the gold nanoparticle and thus the conformational changes of the DNA under varying electric field were analyzed by dark field spectroscopy. After this basic characterization, another actuator was built utilizing hairpin-DNA coated gold nanoparticles, where the hairpin-DNA induced discrete transitions between two specific open-loop and folded-loop states. These two states and the transition dynamics between them were clearly visible in the actuator behavior. The demonstrated nanoactuator concept could be readily extended to inspection of conformational changes of other biomolecules as well. Besides, this concept enables other possibilities in applications like surface-enhanced Raman spectroscopy and fluorescence enhancement, since the specific wavelength of the plasmon resonance of the actuator can be tuned by the external voltage.
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Affiliation(s)
- Kosti Tapio
- University of Jyvaskyla, Department of Physics, Nanoscience Center, FI-40014 University of Jyväskylä, P.O. Box 35, Finland.
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12
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Liu L, Chen K, Xiang N, Ni Z. Dielectrophoretic manipulation of nanomaterials: A review. Electrophoresis 2018; 40:873-889. [DOI: 10.1002/elps.201800342] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 09/26/2018] [Accepted: 09/30/2018] [Indexed: 12/24/2022]
Affiliation(s)
- Linbo Liu
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments; Southeast University; Nanjing P. R. China
| | - Ke Chen
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments; Southeast University; Nanjing P. R. China
| | - Nan Xiang
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments; Southeast University; Nanjing P. R. China
| | - Zhonghua Ni
- School of Mechanical Engineering, and Jiangsu Key Laboratory for Design and Manufacture of Micro-Nano Biomedical Instruments; Southeast University; Nanjing P. R. China
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13
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Biswas A, Banerjee S, Gart EV, Nagaraja AT, McShane MJ. Gold Nanocluster Containing Polymeric Microcapsules for Intracellular Ratiometric Fluorescence Biosensing. ACS OMEGA 2017; 2:2499-2506. [PMID: 30023667 PMCID: PMC6044823 DOI: 10.1021/acsomega.7b00199] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Accepted: 05/26/2017] [Indexed: 05/31/2023]
Abstract
A new approach to sensing and imaging hydrogen peroxide (H2O2) was developed using microcapsule-based dual-emission ratiometric luminescent biosensors. Bovine serum albumin-capped gold nanoclusters (BSA-AuNCs) sensitive to H2O2 were coencapsulated with insensitive FluoSpheres (FSs) within polymeric capsules fabricated via the layer-by-layer method. Under single-wavelength excitation, the microcapsule-based biosensors exhibited emission bands at ∼516 and ∼682 nm resulting from the FSs and BSA-AuNCs, respectively. The polyelectrolyte multilayers lining the microcapsules were effective in protecting BSA-AuNCs from the degradation catalyzed by proteases (chymotrypsin, trypsin, papain, and proteinase K) and subsequent luminescent quenching, overcoming a key limitation of prior BSA-AuNC-based sensing systems. The luminescent response of the sensors was also found to be independent of local changes in pH (5-9). Quenching of the AuNCs in the presence of H2O2 enabled the spectroscopic quantification and imaging of changes in H2O2 concentration from 0 to 1 mM. The microcapsule sensors were easily phagocytized by murine macrophage cells (RAW 264.7), were effective as intracellular H2O2 imaging probes, and were successfully used to detect local release of H2O2 in response to an external chemical stimulus.
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Affiliation(s)
- Aniket Biswas
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Swayoma Banerjee
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Elena V. Gart
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Ashvin T. Nagaraja
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
| | - Michael J. McShane
- Department of Biomedical Engineering, Department of Biology, Department of Veterinary
Pathobiology, and Department of Materials Science and Engineering, Texas A&M University, College
Station, Texas 77843, United States
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14
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Daneshkhah A, Shrestha S, Siegel A, Varahramyan K, Agarwal M. Cross-Selectivity Enhancement of Poly(vinylidene fluoride-hexafluoropropylene)-Based Sensor Arrays for Detecting Acetone and Ethanol. SENSORS (BASEL, SWITZERLAND) 2017; 17:E595. [PMID: 28294961 PMCID: PMC5375881 DOI: 10.3390/s17030595] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 03/02/2017] [Accepted: 03/06/2017] [Indexed: 11/17/2022]
Abstract
Two methods for cross-selectivity enhancement of porous poly(vinylidene fluoride-hexafluoropropylene) (PVDF-HFP)/carbon black (CB) composite-based resistive sensors are provided. The sensors are tested with acetone and ethanol in the presence of humid air. Cross-selectivity is enhanced using two different methods to modify the basic response of the PVDF-HFP/CB sensing platform. In method I, the adsorption properties of PVDF-HFP/CB are altered by adding a polyethylene oxide (PEO) layer or by treating with infrared (IR). In method II, the effects of the interaction of acetone and ethanol are enhanced by adding diethylene carbonate (DEC) or PEO dispersed in DEC (PEO/DEC) to the film. The results suggest the approaches used in method I alter the composite ability to adsorb acetone and ethanol, while in method II, they alter the transduction characteristics of the composite. Using these approaches, sensor relative response to acetone was increased by 89% compared with the PVDF-HFP/CB untreated film, whereas sensor relative response to ethanol could be decreased by 57% or increased by 197%. Not only do these results demonstrate facile methods for increasing sensitivity of PVDF-HFP/CB film, used in parallel they demonstrate a roadmap for enhancing system cross-selectivity that can be applied to separate units on an array. Fabrication methods, experimental procedures and results are presented and discussed.
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Affiliation(s)
- Ali Daneshkhah
- Department of Electrical and Computer Engineering, Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN 46202, USA.
- Integrated Nanosystems Development Institute (INDI), Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN 46202, USA.
| | - Sudhir Shrestha
- Department of Electrical and Computer Engineering, Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN 46202, USA.
- Integrated Nanosystems Development Institute (INDI), Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN 46202, USA.
- Present Address: Department of Electrical and Computer Engineering, College of Engineering and Computing, Miami University, Oxford, OH 45056, USA.
| | - Amanda Siegel
- Integrated Nanosystems Development Institute (INDI), Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN 46202, USA.
| | - Kody Varahramyan
- Department of Electrical and Computer Engineering, Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN 46202, USA.
- Integrated Nanosystems Development Institute (INDI), Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN 46202, USA.
| | - Mangilal Agarwal
- Integrated Nanosystems Development Institute (INDI), Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN 46202, USA.
- Department of Mechanical Engineering, Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN 46202, USA.
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Potyrailo RA. Toward high value sensing: monolayer-protected metal nanoparticles in multivariable gas and vapor sensors. Chem Soc Rev 2017; 46:5311-5346. [DOI: 10.1039/c7cs00007c] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review provides analysis of advances in multivariable sensors based on monolayer-protected nanoparticles and several principles of signal transduction that result in building non-resonant and resonant electrical sensors as well as material- and structure-based photonic sensors.
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16
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Potyrailo RA. Multivariable Sensors for Ubiquitous Monitoring of Gases in the Era of Internet of Things and Industrial Internet. Chem Rev 2016; 116:11877-11923. [DOI: 10.1021/acs.chemrev.6b00187] [Citation(s) in RCA: 224] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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