1
|
Liu Y, Asset T, Chen Y, Murphy E, Potma EO, Matanovic I, Fishman DA, Atanassov P. Facile All-Optical Method for In Situ Detection of Low Amounts of Ammonia. iScience 2020; 23:101757. [PMID: 33241202 PMCID: PMC7674512 DOI: 10.1016/j.isci.2020.101757] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/20/2020] [Accepted: 10/28/2020] [Indexed: 11/20/2022] Open
Abstract
As a key precursor for nitrogenous compounds and fertilizer, ammonia affects our lives in numerous ways. Rapid and sensitive detection of ammonia is essential, both in environmental monitoring and in process control for industrial production. Here we report a novel and nonperturbative method that allows rapid detection of ammonia at low concentrations, based on the all-optical detection of surface-enhanced Raman signals. We show that this simple and affordable approach enables ammonia probing at selected regions of interest with high spatial resolution, making in situ and operando observations possible. Novel method for detection of ammonia at concentrations below 1 ppm in just under 1 s This approach allows local detection of ammonia amounts as low as 104–105 molecules Method for sensitive direct monitoring of catalytic/electrocatalytic processes The method allows following the dynamics of ammonia concentration change in real time
Collapse
Affiliation(s)
- Yuanchao Liu
- Department of Chemical & Biomolecular Engineering, National Fuel Cell Research Center (NFCRC), University of California, Irvine, CA 92697, USA
| | - Tristan Asset
- Department of Chemical & Biomolecular Engineering, National Fuel Cell Research Center (NFCRC), University of California, Irvine, CA 92697, USA
| | - Yechuan Chen
- Department of Chemical & Biomolecular Engineering, National Fuel Cell Research Center (NFCRC), University of California, Irvine, CA 92697, USA
| | - Eamonn Murphy
- Department of Chemical & Biomolecular Engineering, National Fuel Cell Research Center (NFCRC), University of California, Irvine, CA 92697, USA
| | - Eric O Potma
- Department of Chemistry, University of California, Irvine, CA 92697, USA
| | - Ivana Matanovic
- Department of Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM 87131, USA
| | - Dmitry A Fishman
- Department of Chemistry, University of California, Irvine, CA 92697, USA
| | - Plamen Atanassov
- Department of Chemical & Biomolecular Engineering, National Fuel Cell Research Center (NFCRC), University of California, Irvine, CA 92697, USA
| |
Collapse
|
2
|
To KC, Ben-Jaber S, Parkin IP. Recent Developments in the Field of Explosive Trace Detection. ACS NANO 2020; 14:10804-10833. [PMID: 32790331 DOI: 10.1021/acsnano.0c01579] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Explosive trace detection (ETD) technologies play a vital role in maintaining national security. ETD remains an active research area with many analytical techniques in operational use. This review details the latest advances in animal olfactory, ion mobility spectrometry (IMS), and Raman and colorimetric detection methods. Developments in optical, biological, electrochemical, mass, and thermal sensors are also covered in addition to the use of nanomaterials technology. Commercially available systems are presented as examples of current detection capabilities and as benchmarks for improvement. Attention is also drawn to recent collaborative projects involving government, academia, and industry to highlight the emergence of multimodal screening approaches and applications. The objective of the review is to provide a comprehensive overview of ETD by highlighting challenges in ETD and providing an understanding of the principles, advantages, and limitations of each technology and relating this to current systems.
Collapse
Affiliation(s)
- Ka Chuen To
- Department of Chemistry, University College London, 20 Gordon Street, Bloomsbury, London WC1H 0AJ, United Kingdom
| | - Sultan Ben-Jaber
- Department of Science and Forensics, King Fahad Security College, Riyadh 13232, Saudi Arabia
| | - Ivan P Parkin
- Department of Chemistry, University College London, 20 Gordon Street, Bloomsbury, London WC1H 0AJ, United Kingdom
| |
Collapse
|
3
|
Wu J, Zhang L, Huang F, Ji X, Dai H, Wu W. Surface enhanced Raman scattering substrate for the detection of explosives: Construction strategy and dimensional effect. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:121714. [PMID: 31818672 DOI: 10.1016/j.jhazmat.2019.121714] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/08/2019] [Accepted: 11/17/2019] [Indexed: 06/10/2023]
Abstract
Surface-enhanced Raman spectroscopy (SERS) technology has been reported to be able to quickly and non-destructively identify target analytes. SERS substrate with high sensitivity and selectivity gave SERS technology a broad application prospect. This contribution aims to provide a detailed and systematic review of the current state of research on SERS-based explosive sensors, with particular attention to current research advances. This review mainly focuses on the strategies for improving SERS performance and the SERS substrates with different dimensions including zero-dimensional (0D) nanocolloids, one-dimensional (1D) nanowires and nanorods, two-dimensional (2D) arrays, and three-dimensional (3D) networks. The effects of elemental composition, the shape and size of metal nanoparticles, hot-spot structure and surface modification on the performance of explosive detection are also reviewed. In addition, the future development tendency and application of SERS-based explosive sensors are prospected.
Collapse
Affiliation(s)
- Jingjing Wu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Lei Zhang
- Key Laboratory for Organic Electronics and Information, National Jiangsu Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China.
| | - Fang Huang
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xingxiang Ji
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China
| | - Hongqi Dai
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Weibing Wu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
| |
Collapse
|
4
|
Bell TM, Williamson DM, Walley SM, Morgan CG, Kelly CL, Batchelor L. An Assessment of Printing Methods for Producing Two‐Dimensional Lead‐Free Functional Pyrotechnic Delay‐Lines for Mining Applications. PROPELLANTS EXPLOSIVES PYROTECHNICS 2020. [DOI: 10.1002/prep.201900359] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tuuli M. Bell
- PCS Fracture and Shock Physics Group, Cavendish LaboratoryUniversity of Cambridge J. J. Thomson Avenue Cambridge CB3 0HE UK
| | - David M. Williamson
- PCS Fracture and Shock Physics Group, Cavendish LaboratoryUniversity of Cambridge J. J. Thomson Avenue Cambridge CB3 0HE UK
| | - Stephen M. Walley
- PCS Fracture and Shock Physics Group, Cavendish LaboratoryUniversity of Cambridge J. J. Thomson Avenue Cambridge CB3 0HE UK
| | | | | | | |
Collapse
|
5
|
Strobbia P, Sadler T, Odion RA, Vo-Dinh T. SERS in Plain Sight: A Polarization Modulation Method for Signal Extraction. Anal Chem 2019; 91:3319-3326. [PMID: 30676724 DOI: 10.1021/acs.analchem.8b04360] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is a powerful analytical spectroscopy offering advantages ranging from "vibrational fingerprints" to multiplexed detection. However, the use of this technique in real-world applications has been limited due to difficulties in detecting inherently weak Raman signals often embedded in strong interfering background signals. A variety of plasmonics-active platforms have been developed to increase Raman signals but are not sufficient to extract weak SERS signals from intense interfering background signals. Herein, we describe a practical method, referred to as polarization modulation-SERS (PM-SERS), which utilizes the polarization dependence of anisotropic SERS-active nanostructures to modulate the plasmonic effect to extract SERS signals and remove background. The modulation is obtained by switching the polarization of the excitation source at a specific frequency involving addition of only few optical components such as liquid crystal polarizers to a typical Raman setup. In this work, we characterized the polarization-dependent response of the SERS substrates fabricated using the oblique angle evaporation (OAV) technique and their response under laser excitation using a polarization modulated source. We demonstrated that the PM-SERS method can extract the analyte weak SERS signals from the strong interfering background signal in different situations, involving a fluorescent sample and a strong background light, and we show the possibility of using PM-SERS at a quasi-real time rate (0.5 Hz). We believe that the PM-SERS method will help expand the translation of applications that utilize SERS-substrates to real-world settings.
Collapse
Affiliation(s)
- Pietro Strobbia
- Fitzpatrick Institute for Photonics , Duke University , Durham , North Carolina 27708 , United States.,Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States
| | - Tyjair Sadler
- Fitzpatrick Institute for Photonics , Duke University , Durham , North Carolina 27708 , United States.,Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
| | - Ren A Odion
- Fitzpatrick Institute for Photonics , Duke University , Durham , North Carolina 27708 , United States.,Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States
| | - Tuan Vo-Dinh
- Fitzpatrick Institute for Photonics , Duke University , Durham , North Carolina 27708 , United States.,Department of Biomedical Engineering , Duke University , Durham , North Carolina 27708 , United States.,Department of Chemistry , Duke University , Durham , North Carolina 27708 , United States
| |
Collapse
|
6
|
Satya Bharati MS, Chandu B, Rao SV. Explosives sensing using Ag–Cu alloy nanoparticles synthesized by femtosecond laser ablation and irradiation. RSC Adv 2019; 9:1517-1525. [PMID: 35518042 PMCID: PMC9059630 DOI: 10.1039/c8ra08462a] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 01/08/2019] [Indexed: 12/18/2022] Open
Abstract
Herein we demonstrate the synthesis of Ag–Cu alloy NPs through a consecutive two-step process; laser ablation followed by laser irradiation. Initially, pure Ag and Cu NPs were produced individually using the laser ablation in liquid technique (with ∼50 femtosecond pulses at 800 nm) which was followed by laser irradiation of the mixed Ag and Cu NPs in equal volume. These Ag, Cu, and Ag–Cu NPs were characterised by UV-visible absorption, HRTEM and XRD techniques. The alloy formation was confirmed by the presence of a single surface plasmon resonance peak in absorption spectra and elemental mapping using FESEM techniques. Furthermore, the results from surface enhanced Raman scattering (SERS) studies performed for the methylene blue (MB) molecule suggested that Ag–Cu alloy NPs demonstrate a higher enhancement factor (EF) compared to pure Ag/Cu NPs. Additionally, SERS studies of Ag–Cu alloy NPs were implemented for the detection of explosive molecules such as picric acid (PA – 5 μM), ammonium nitrate (AN – 5 μM) and the dye molecule methylene blue (MB – 5 nM). These alloy NPs exhibited superiority in the detection of various analyte molecules with good reproducibility and high sensitivity with EFs in the range of 104 to 107. Herein we demonstrate the synthesis of Ag–Cu alloy NPs through a consecutive two-step process; laser ablation followed by laser irradiation.![]()
Collapse
Affiliation(s)
- Moram Sree Satya Bharati
- Advanced Centre for Research in High Energy Materials (ACRHEM)
- University of Hyderabad
- Hyderabad 500046
- India
| | - Byram Chandu
- Advanced Centre for Research in High Energy Materials (ACRHEM)
- University of Hyderabad
- Hyderabad 500046
- India
| | - S. Venugopal Rao
- Advanced Centre for Research in High Energy Materials (ACRHEM)
- University of Hyderabad
- Hyderabad 500046
- India
| |
Collapse
|
7
|
Abstract
Chemical sensing and imaging technologies are of great importance in medical diagnostics and environmental sensing due to their ability to detect and localize chemical targets and provide valuable information in real-time. Biophotonic techniques are the most promising for in vivo applications due to their minimal invasivity. Our laboratory has introduced various biophotonics-based technologies for chemical sensing and imaging for biochemical sensing, medical diagnostics, and fundamental research. Over the years, we have developed a wide variety of fluorescence and surface-enhanced Raman scattering (SERS)-based technologies for the detection of biomarkers for cancer and other diseases. This paper provides an overview of the research on chemical and biological sensors developed in our laboratory, highlighting our work on in vivo imaging and sensing, including minimally invasive detection of endogenous fluorophores associated with malignant tissue, SERS-tag localization of cancer cells and tissues, and SERS-based detection of nucleic acid biotargets and its feasibility for in vivo applications. This manuscript also presents new development on the use of Raman imaging of SERS-labeled nanoprobes incubated in leaves for use in biofuel research, laying the foundation for studies on functional imaging of nucleic acid biomarkers in plants.
Collapse
|
8
|
Brady JJ, Argirakis BL, Gordon AD, Lareau RT, Smith BT. Polymorphic Phase Control of RDX-Based Explosives. APPLIED SPECTROSCOPY 2018; 72:28-36. [PMID: 28537423 DOI: 10.1177/0003702817712259] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The polymorphic phase of 1,3,5-trinitro-1,3,5-triazine (RDX) was examined as a function of mass loading, solvent, and sample deposition technique. When RDX was deposited at a high mass loading, the vibrational modes in the obtained Raman spectra were indicative of concomitant polymorphism as both the α-RDX and β-RDX phases were present. At low mass loadings, only β-RDX was observed regardless of solvent when using the drop cast crystallization method. However, α-RDX (the thermodynamically stable polymorphic phase observed with visible quantities of the explosive) was observed when RDX deposits were dry transferred. Observation of α-RDX was independent of the initial mass loading or the initial deposition solvent when using the dry transfer methodology. These data indicate that the use of the dry transfer preparation method can be used to successfully prepare RDX-based test articles with the α-RDX phase regardless of the solvent used to initially dissolve the RDX, the initial deposition technique, or the mass loading.
Collapse
Affiliation(s)
- John J Brady
- 1 Transportation Security Laboratory, William J. Hughes Technical Center, Atlantic City, NJ, USA
| | - Brittney L Argirakis
- 1 Transportation Security Laboratory, William J. Hughes Technical Center, Atlantic City, NJ, USA
- 2 Penn State University, University Park, PA, USA
| | - Alexander D Gordon
- 1 Transportation Security Laboratory, William J. Hughes Technical Center, Atlantic City, NJ, USA
- 3 Signature Science, LLC, Egg Harbor Township, NJ, USA
| | - Richard T Lareau
- 1 Transportation Security Laboratory, William J. Hughes Technical Center, Atlantic City, NJ, USA
| | - Barry T Smith
- 1 Transportation Security Laboratory, William J. Hughes Technical Center, Atlantic City, NJ, USA
| |
Collapse
|
9
|
Versatile gold based SERS substrates fabricated by ultrafast laser ablation for sensing picric acid and ammonium nitrate. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.07.043] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
10
|
Farrell ME, Strobbia P, Pellegrino PM, Cullum B. Surface regeneration and signal increase in surface-enhanced Raman scattering substrates. APPLIED OPTICS 2017; 56:B198-B213. [PMID: 28157898 DOI: 10.1364/ao.56.00b198] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Regenerated surface-enhanced Raman scattering (SERS) substrates allow users the ability to not only reuse sensing surfaces, but also tailor them to the sensing application needs (wavelength of the available laser, plasmon band matching). In this review, we discuss the development of SERS substrates for response to emerging threats and some of our collaborative efforts to improve on the use of commercially available substrate surfaces. Thus, we are able to extend the use of these substrates to broader Army needs (like emerging threat response).
Collapse
|
11
|
Holthoff EL, Pellegrino PM. Development of photoacoustic sensing platforms at the Army Research Laboratory. APPLIED OPTICS 2017; 56:B74-B84. [PMID: 28157868 DOI: 10.1364/ao.56.000b74] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Traditionally, chemical sensing platforms have been hampered by the opposing concerns of increasing sensor capability while maintaining a minimal package size. Current sensors, although reasonably sized, are geared to more classical chemical threats, and the ability to expand their capabilities to a broader range of emerging threats is uncertain. Recently, photoacoustic spectroscopy, employed in a sensor format, has shown enormous potential to address these ever-changing threats. Photoacoustic spectroscopy is one of the more flexible infrared spectroscopy variants, and that flexibility allows for the construction of sensors that are designed for specific tasks. The Army Research Laboratory has, for the past 14 years, engaged in research into the development of photoacoustic sensing platforms with the goal of sensor miniaturization and the detection of a variety of chemical targets both proximally and at range. This paper reviews this work.
Collapse
|
12
|
Chen J, Shi YE, Zhang M, Zhan J. Diethyldithiocarbamate (DDTC) induced formation of positively charged silver nanoparticles for rapid in situ identification of inorganic explosives by surface enhanced Raman spectroscopy. RSC Adv 2016. [DOI: 10.1039/c6ra06111g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Diethyldithiocarbamate could induce the generation of positively charged silver nanoparticles for rapidin situdetection of the explosives with a portable Raman spectrometer.
Collapse
Affiliation(s)
- Juan Chen
- National Engineering Research Center for Colloidal Materials
- Key Laboratory for Colloid and Interface Chemistry of Ministry of Education
- Department of Chemistry
- Shandong University
- Jinan 250100
| | - Yu-e Shi
- National Engineering Research Center for Colloidal Materials
- Key Laboratory for Colloid and Interface Chemistry of Ministry of Education
- Department of Chemistry
- Shandong University
- Jinan 250100
| | - Min Zhang
- National Engineering Research Center for Colloidal Materials
- Key Laboratory for Colloid and Interface Chemistry of Ministry of Education
- Department of Chemistry
- Shandong University
- Jinan 250100
| | - Jinhua Zhan
- National Engineering Research Center for Colloidal Materials
- Key Laboratory for Colloid and Interface Chemistry of Ministry of Education
- Department of Chemistry
- Shandong University
- Jinan 250100
| |
Collapse
|
13
|
Gillen G, Najarro M, Wight S, Walker M, Verkouteren J, Windsor E, Barr T, Staymates M, Urbas A. Particle Fabrication Using Inkjet Printing onto Hydrophobic Surfaces for Optimization and Calibration of Trace Contraband Detection Sensors. SENSORS 2015; 15:29618-34. [PMID: 26610515 PMCID: PMC4701350 DOI: 10.3390/s151129618] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Revised: 11/16/2015] [Accepted: 11/18/2015] [Indexed: 01/28/2023]
Abstract
A method has been developed to fabricate patterned arrays of micrometer-sized monodisperse solid particles of ammonium nitrate on hydrophobic silicon surfaces using inkjet printing. The method relies on dispensing one or more microdrops of a concentrated aqueous ammonium nitrate solution from a drop-on-demand (DOD) inkjet printer at specific locations on a silicon substrate rendered hydrophobic by a perfluorodecytrichlorosilane monolayer coating. The deposited liquid droplets form into the shape of a spherical shaped cap; during the evaporation process, a deposited liquid droplet maintains this geometry until it forms a solid micrometer sized particle. Arrays of solid particles are obtained by sequential translation of the printer stage. The use of DOD inkjet printing for fabrication of discrete particle arrays allows for precise control of particle characteristics (mass, diameter and height), as well as the particle number and spatial distribution on the substrate. The final mass of an individual particle is precisely determined by using gravimetric measurement of the average mass of solution ejected per microdrop. The primary application of this method is fabrication of test materials for the evaluation of spatially-resolved optical and mass spectrometry based sensors used for detecting particle residues of contraband materials, such as explosives or narcotics.
Collapse
Affiliation(s)
- Greg Gillen
- National Institute of Standards and Technology, Materials Measurement Laboratory, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
| | - Marcela Najarro
- National Institute of Standards and Technology, Materials Measurement Laboratory, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
| | - Scott Wight
- National Institute of Standards and Technology, Materials Measurement Laboratory, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
| | - Marlon Walker
- National Institute of Standards and Technology, Materials Measurement Laboratory, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
| | - Jennifer Verkouteren
- National Institute of Standards and Technology, Materials Measurement Laboratory, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
| | - Eric Windsor
- National Institute of Standards and Technology, Materials Measurement Laboratory, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
| | - Tim Barr
- National Institute of Standards and Technology, Materials Measurement Laboratory, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
| | - Matthew Staymates
- National Institute of Standards and Technology, Materials Measurement Laboratory, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
| | - Aaron Urbas
- National Institute of Standards and Technology, Materials Measurement Laboratory, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
| |
Collapse
|
14
|
Farrell ME, Holthoff EL, Pellegrino PM. Raman Detection of improvised explosive device (IED) material fabricated using drop-on-demand Inkjet Technology on several real world surfaces. ACTA ACUST UNITED AC 2015. [DOI: 10.1117/12.2176553] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
15
|
Kamra T, Zhou T, Montelius L, Schnadt J, Ye L. Implementation of Molecularly Imprinted Polymer Beads for Surface Enhanced Raman Detection. Anal Chem 2015; 87:5056-61. [DOI: 10.1021/acs.analchem.5b00774] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Tripta Kamra
- Division of Pure & Applied Biochemistry, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
- Division of Solid State Physics, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
| | - Tongchang Zhou
- Division of Pure & Applied Biochemistry, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden
| | - Lars Montelius
- Division of Solid State Physics, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
| | - Joachim Schnadt
- Division of Synchrotron Radiation Research, Department of Physics, Lund University, Box
118, 221 00 Lund, Sweden
| | - Lei Ye
- Division of Pure & Applied Biochemistry, Department of Chemistry, Lund University, Box 124, 221 00 Lund, Sweden
| |
Collapse
|
16
|
Hakonen A, Andersson PO, Stenbæk Schmidt M, Rindzevicius T, Käll M. Explosive and chemical threat detection by surface-enhanced Raman scattering: a review. Anal Chim Acta 2015; 893:1-13. [PMID: 26398417 DOI: 10.1016/j.aca.2015.04.010] [Citation(s) in RCA: 142] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Revised: 03/16/2015] [Accepted: 04/03/2015] [Indexed: 01/18/2023]
Abstract
Acts of terror and warfare threats are challenging tasks for defense agencies around the world and of growing importance to security conscious policy makers and the general public. Explosives and chemical warfare agents are two of the major concerns in this context, as illustrated by the recent Boston Marathon bombing and nerve gas attacks on civilians in the Middle East. To prevent such tragic disasters, security personnel must be able to find, identify and deactivate the threats at multiple locations and levels. This involves major technical and practical challenges, such as detection of ultra-low quantities of hazardous compounds at remote locations for anti-terror purposes and monitoring of environmental sanitation of dumped or left behind toxic substances and explosives. Surface-enhanced Raman scattering (SERS) is one of todays most interesting and rapidly developing methods for label-free ultrasensitive vibrational "fingerprinting" of a variety of molecular compounds. Performance highlights include attomolar detection of TNT and DNT explosives, a sensitivity that few, if any, other technique can compete with. Moreover, instrumentation needed for SERS analysis are becoming progressively better, smaller and cheaper, and can today be acquired for a retail price close to 10,000 US$. This contribution aims to give a comprehensive overview of SERS as a technique for detection of explosives and chemical threats. We discuss the prospects of SERS becoming a major tool for convenient in-situ threat identification and we summarize existing SERS detection methods and substrates with particular focus on ultra-sensitive real-time detection. General concepts, detection capabilities and perspectives are discussed in order to guide potential users of the technique for homeland security and anti-warfare purposes.
Collapse
Affiliation(s)
- Aron Hakonen
- Division of Bionanophotonics, Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden.
| | - Per Ola Andersson
- Swedish Defense Research Agency FOI, Division of CBRN Defence & Security, SE-90182 Umeå, Sweden
| | - Michael Stenbæk Schmidt
- DTU Nanotech, Technical University of Denmark, Department of Micro- and Nanotechnology, Ørsteds Plads, Building 345 East, 2800 Kgs. Lyngby, Denmark
| | - Tomas Rindzevicius
- DTU Nanotech, Technical University of Denmark, Department of Micro- and Nanotechnology, Ørsteds Plads, Building 345 East, 2800 Kgs. Lyngby, Denmark
| | - Mikael Käll
- Division of Bionanophotonics, Department of Applied Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| |
Collapse
|
17
|
Holthoff EL, Farrell ME, Pellegrino PM. Standardized sample preparation using a drop-on-demand printing platform. SENSORS 2013; 13:5814-25. [PMID: 23653050 PMCID: PMC3690031 DOI: 10.3390/s130505814] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 04/26/2013] [Accepted: 04/29/2013] [Indexed: 11/16/2022]
Abstract
Hazard detection systems must be evaluated with appropriate test material concentrations under controlled conditions in order to accurately identify and quantify unknown residues commonly utilized in theater. The existing assortment of hazard reference sample preparation methods/techniques presents a range of variability and reproducibility concerns, making it increasingly difficult to accurately assess optically- based detection technologies. To overcome these challenges, we examined the optimization, characterization, and calibration of microdroplets from a drop-on-demand microdispenser that has a proven capability for the preparation of energetic reference materials. Research presented herein focuses on the development of a simplistic instrument calibration technique and sample preparation protocol for explosive materials testing based on drop-on-demand technology. Droplet mass and reproducibility were measured using ultraviolet-visible (UV-Vis) absorption spectroscopy. The results presented here demonstrate the operational factors that influence droplet dispensing for specific materials (e.g., energetic and interferents). Understanding these parameters permits the determination of droplet and sample uniformity and reproducibility (typical R2 values of 0.991, relative standard deviation or RSD ≤ 5%), and thus the demonstrated maturation of a successful and robust methodology for energetic sample preparation.
Collapse
Affiliation(s)
- Ellen L Holthoff
- United States Army Research Laboratory, RDRL-SEE-E, 2800 Powder Mill Road, Adelphi, MD 20783, USA.
| | | | | |
Collapse
|