101
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Barnette AL, Lee C, Bradley LC, Schreiner EP, Park YB, Shin H, Cosgrove DJ, Park S, Kim SH. Quantification of crystalline cellulose in lignocellulosic biomass using sum frequency generation (SFG) vibration spectroscopy and comparison with other analytical methods. Carbohydr Polym 2012; 89:802-9. [PMID: 24750865 DOI: 10.1016/j.carbpol.2012.04.014] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Revised: 04/04/2012] [Accepted: 04/05/2012] [Indexed: 10/28/2022]
Abstract
The non-centrosymmetry requirement of sum frequency generation (SFG) vibration spectroscopy allows the detection and quantification of crystalline cellulose in lignocellulose biomass without spectral interferences from hemicelluloses and lignin. This paper shows a correlation between the amount of crystalline cellulose in biomass and the SFG signal intensity. Model biomass samples were prepared by mixing commercially available cellulose, xylan, and lignin to defined concentrations. The SFG signal intensity was found sensitive to a wide range of crystallinity, but varied non-linearly with the mass fraction of cellulose in the samples. This might be due to the matrix effects such as light scattering and absorption by xylan and lignin, as well as the non-linear density dependence of the SFG process itself. Comparison with other techniques such as XRD, FT-Raman, FT-IR and NMR demonstrate that SFG can be a complementary and sensitive tool to assess crystalline cellulose in biomass.
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Affiliation(s)
- Anna L Barnette
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, United States
| | - Christopher Lee
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, United States
| | - Laura C Bradley
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, United States
| | - Edward P Schreiner
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, United States
| | - Yong Bum Park
- Department of Biology, Pennsylvania State University, University Park, PA 16802, United States
| | - Heenae Shin
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695, United States; Department of Forest Sciences, Seoul National University, Seoul, Republic of Korea
| | - Daniel J Cosgrove
- Department of Biology, Pennsylvania State University, University Park, PA 16802, United States
| | - Sunkyu Park
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695, United States; Department of Forest Sciences, Seoul National University, Seoul, Republic of Korea
| | - Seong H Kim
- Department of Chemical Engineering, Pennsylvania State University, University Park, PA 16802, United States; Materials Research Institute, Pennsylvania State University, University Park, PA 16802, United States
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102
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Araújo AC, Song Y, Lundeberg J, Ståhl PL, Brumer H. Activated Paper Surfaces for the Rapid Hybridization of DNA through Capillary Transport. Anal Chem 2012; 84:3311-7. [DOI: 10.1021/ac300025v] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | - Patrik L. Ståhl
- Department of Cell- and Molecular
Biology, Karolinska Institutet, SE-171
77, Stockholm, Sweden
| | - Harry Brumer
- Michael Smith Laboratories and
Department of Chemistry, University of British Columbia, 2185 East Mall, Vancouver, BC, V6T 1Z4, Canada
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103
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Li X, Ballerini DR, Shen W. A perspective on paper-based microfluidics: Current status and future trends. BIOMICROFLUIDICS 2012; 6:11301-1130113. [PMID: 22662067 PMCID: PMC3365319 DOI: 10.1063/1.3687398] [Citation(s) in RCA: 454] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Accepted: 02/01/2012] [Indexed: 05/03/2023]
Abstract
"Paper-based microfluidics" or "lab on paper," as a burgeoning research field with its beginning in 2007, provides a novel system for fluid handling and fluid analysis for a variety of applications including health diagnostics, environmental monitoring as well as food quality testing. The reasons why paper becomes an attractive substrate for making microfluidic systems include: (1) it is a ubiquitous and extremely cheap cellulosic material; (2) it is compatible with many chemical/biochemical/medical applications; and (3) it transports liquids using capillary forces without the assistance of external forces. By building microfluidic channels on paper, liquid flow is confined within the channels, and therefore, liquid flow can be guided in a controlled manner. A variety of 2D and even 3D microfluidic channels have been created on paper, which are able to transport liquids in the predesigned pathways on paper. At the current stage of its development, paper-based microfluidic system is claimed to be low-cost, easy-to-use, disposable, and equipment-free, and therefore, is a rising technology particularly relevant to improving the healthcare and disease screening in the developing world, especially for those areas with no- or low-infrastructure and limited trained medical and health professionals. The research in paper-based microfluidics is experiencing a period of explosion; most published works have focused on: (1) inventing low-cost and simple fabrication techniques for paper-based microfluidic devices; and (2) exploring new applications of paper-based microfluidics by incorporating efficient detection methods. This paper aims to review both the fabrication techniques and applications of paper-based microfluidics reported to date. This paper also attempts to convey to the readers, from the authors' point of view the current limitations of paper-based microfluidics which require further research, and a few perspective directions this new analytical system may take in its development.
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Affiliation(s)
- Xu Li
- Australian Pulp and Paper Institute, Department of Chemical Engineering, Monash University, Clayton Campus, Victoria 3800, Australia
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104
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Jarujamrus P, Tian J, Li X, Siripinyanond A, Shiowatana J, Shen W. Mechanisms of red blood cells agglutination in antibody-treated paper. Analyst 2012; 137:2205-10. [DOI: 10.1039/c2an15798e] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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105
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Fragouli D, Bayer IS, Di Corato R, Brescia R, Bertoni G, Innocenti C, Gatteschi D, Pellegrino T, Cingolani R, Athanassiou A. Superparamagnetic cellulose fiber networks via nanocomposite functionalization. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c1jm14755b] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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106
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Gubala V, Harris LF, Ricco AJ, Tan MX, Williams DE. Point of Care Diagnostics: Status and Future. Anal Chem 2011; 84:487-515. [DOI: 10.1021/ac2030199] [Citation(s) in RCA: 832] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Vladimir Gubala
- Biomedical Diagnostics Institute, Dublin City University, Dublin 9, Ireland
| | - Leanne F. Harris
- Biomedical Diagnostics Institute, Dublin City University, Dublin 9, Ireland
| | - Antonio J. Ricco
- Biomedical Diagnostics Institute, Dublin City University, Dublin 9, Ireland
| | - Ming X. Tan
- Biomedical Diagnostics Institute, Dublin City University, Dublin 9, Ireland
| | - David E. Williams
- Biomedical Diagnostics Institute, Dublin City University, Dublin 9, Ireland
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107
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Ge L, Yan J, Song X, Yan M, Ge S, Yu J. Three-dimensional paper-based electrochemiluminescence immunodevice for multiplexed measurement of biomarkers and point-of-care testing. Biomaterials 2011; 33:1024-31. [PMID: 22074665 DOI: 10.1016/j.biomaterials.2011.10.065] [Citation(s) in RCA: 263] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2011] [Accepted: 10/24/2011] [Indexed: 01/06/2023]
Abstract
In this work, electrochemiluminescence (ECL) immunoassay was introduced into the recently proposed microfluidic paper-based analytical device (μPADs) based on directly screen-printed electrodes on paper for the very first time. The screen-printed paper-electrodes will be more important for further development of this paper-based ECL device in simple, low-cost and disposable application than commercialized ones. To further perform high-performance, high-throughput, simple and inexpensive ECL immunoassay on μPAD for point-of-care testing, a wax-patterned three-dimensional (3D) paper-based ECL device was demonstrated for the very first time. In this 3D paper-based ECL device, eight carbon working electrodes including their conductive pads were screen-printed on a piece of square paper and shared the same Ag/AgCl reference and carbon counter electrodes on another piece of square paper after stacking. Using typical tris-(bipyridine)-ruthenium (Ⅱ) - tri-n-propylamine ECL system, the application test of this 3D paper-based ECL device was performed through the diagnosis of four tumor markers in real clinical serum samples. With the aid of a facile device-holder and a section-switch assembled on the analyzer, eight working electrodes were sequentially placed into the circuit to trigger the ECL reaction in the sweeping range from 0.5 to 1.1 V at room temperature. In addition, this 3D paper-based ECL device can be easily integrated and combined with the recently emerging paper electronics to further develop simple, sensitive, low-cost, disposable and portable μPAD for point-of-care testing, public health and environmental monitoring in remote regions, developing or developed countries.
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Affiliation(s)
- Lei Ge
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China
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108
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Peng P, Summers L, Rodriguez A, Garnier G. Colloids engineering and filtration to enhance the sensitivity of paper-based biosensors. Colloids Surf B Biointerfaces 2011; 88:271-8. [DOI: 10.1016/j.colsurfb.2011.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Revised: 05/05/2011] [Accepted: 07/04/2011] [Indexed: 10/18/2022]
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109
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Bayer IS, Fragouli D, Attanasio A, Sorce B, Bertoni G, Brescia R, Di Corato R, Pellegrino T, Kalyva M, Sabella S, Pompa PP, Cingolani R, Athanassiou A. Water-repellent cellulose fiber networks with multifunctional properties. ACS APPLIED MATERIALS & INTERFACES 2011; 3:4024-31. [PMID: 21902239 DOI: 10.1021/am200891f] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
We demonstrate a simple but highly efficient technique to introduce multifunctional properties to cellulose fiber networks by wetting them with ethyl-cyanoacrylate monomer solutions containing various suspended organic submicrometer particles or inorganic nanoparticles. Solutions can be applied on cellulosic surfaces by simple solution casting techniques or by dip coating, both being suitable for large area applications. Immediately after solvent evaporation, ethyl-cyanoacrylate starts cross-linking around cellulose fibers under ambient conditions because of naturally occurring surface hydroxyl groups and adsorbed moisture, encapsulating them with a hydrophobic polymer shell. Furthermore, by dispersing various functional particles in the monomer solutions, hydrophobic ethyl-cyanoacrylate nanocomposites with desired functionalities can be formed around the cellulose fibers. To exhibit the versatility of the method, cellulose sheets were functionalized with different ethyl-cyanoacrylate nanocomposite shells comprising submicrometer wax or polytetrafluoroethylene particles for superhydophobicity, MnFe(2)O(4) nanoparticles for magnetic activity, CdSe/ZnS quantum dots for light emission, and silver nanoparticles for antimicrobial activity. Morphological and functional properties of each system have been studied by scanning and transmission electron microscopy, detailed contact angle measurements, light emission spectra and E. coli bacterial growth measurements. A plethora of potential applications can be envisioned for this technique, such as food and industrial packaging, document protection, catalytic cellulosic membranes, textronic (electrofunctional textiles), electromagnetic devices, authentication of valuable documents, and antimicrobial wound healing products to name a few.
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Affiliation(s)
- Ilker S Bayer
- Center for Biomolecular Nanotechnologies @Unile, Istituto Italiano di Tecnologia (IIT), 73010 Lecce, Italy
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110
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Daivasagaya DS, Yao L, Yi Yung K, Hajj-Hassan M, Cheung MC, Chodavarapu VP, Bright FV. Contact CMOS imaging of gaseous oxygen sensor array. SENSORS AND ACTUATORS. B, CHEMICAL 2011; 157:408-16. [PMID: 24493909 PMCID: PMC3909528 DOI: 10.1016/j.snb.2011.04.074] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
We describe a compact luminescent gaseous oxygen (O2) sensor microsystem based on the direct integration of sensor elements with a polymeric optical filter and placed on a low power complementary metal-oxide semiconductor (CMOS) imager integrated circuit (IC). The sensor operates on the measurement of excited-state emission intensity of O2-sensitive luminophore molecules tris(4,7-diphenyl-1,10-phenanthroline) ruthenium(II) ([Ru(dpp)3]2+) encapsulated within sol-gel derived xerogel thin films. The polymeric optical filter is made with polydimethylsiloxane (PDMS) that is mixed with a dye (Sudan-II). The PDMS membrane surface is molded to incorporate arrays of trapezoidal microstructures that serve to focus the optical sensor signals on to the imager pixels. The molded PDMS membrane is then attached with the PDMS color filter. The xerogel sensor arrays are contact printed on top of the PDMS trapezoidal lens-like microstructures. The CMOS imager uses a 32 × 32 (1024 elements) array of active pixel sensors and each pixel includes a high-gain phototransistor to convert the detected optical signals into electrical currents. Correlated double sampling circuit, pixel address, digital control and signal integration circuits are also implemented on-chip. The CMOS imager data is read out as a serial coded signal. The CMOS imager consumes a static power of 320 µW and an average dynamic power of 625 µW when operating at 100 Hz sampling frequency and 1.8 V DC. This CMOS sensor system provides a useful platform for the development of miniaturized optical chemical gas sensors.
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Affiliation(s)
- Daisy S. Daivasagaya
- Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montreal, Quebec H3A2A7, Canada
| | - Lei Yao
- Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montreal, Quebec H3A2A7, Canada
| | - Ka Yi Yung
- Department of Chemistry, University at Buffalo, The State University of New York, Natural Sciences Complex, Buffalo, NY 14260-3000 USA
| | - Mohamad Hajj-Hassan
- Department of Biomedical Engineering, Lebanese International University, Mazraa, Beirut, PO Box 146404, Lebanon
| | - Maurice C. Cheung
- Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montreal, Quebec H3A2A7, Canada
| | - Vamsy P. Chodavarapu
- Department of Electrical and Computer Engineering, McGill University, 3480 University Street, Montreal, Quebec H3A2A7, Canada
- Corresponding author. Tel.: +514 398 3118; fax: +514 398 4470., (V.P. Chodavarapu)
| | - Frank V. Bright
- Department of Chemistry, University at Buffalo, The State University of New York, Natural Sciences Complex, Buffalo, NY 14260-3000 USA
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111
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112
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Chodavarapu VP, Bright FV. CMOS Imaging of Temperature Effects on Pin-Printed Xerogel Sensor Microarrays. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2011; 5:189-196. [PMID: 23851206 DOI: 10.1109/tbcas.2010.2089793] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this paper, we study the effect of temperature on the operation and performance of a xerogel-based sensor microarrays coupled to a complementary metal-oxide semiconductor (CMOS) imager integrated circuit (IC) that images the photoluminescence response from the sensor microarray. The CMOS imager uses a 32 × 32 (1024 elements) array of active pixel sensors and each pixel includes a high-gain phototransistor to convert the detected optical signals into electrical currents. A correlated double sampling circuit and pixel address/digital control/signal integration circuit are also implemented on-chip. The CMOS imager data are read out as a serial coded signal. The sensor system uses a light-emitting diode to excite target analyte responsive organometallic luminophores doped within discrete xerogel-based sensor elements. As a proto type, we developed a 3 × 3 (9 elements) array of oxygen (O2) sensors. Each group of three sensor elements in the array (arranged in a column) is designed to provide a different and specific sensitivity to the target gaseous O2 concentration. This property of multiple sensitivities is achieved by using a mix of two O2 sensitive luminophores in each pin-printed xerogel sensor element. The CMOS imager is designed to be low noise and consumes a static power of 320.4 μW and an average dynamic power of 624.6 μW when operating at 100-Hz sampling frequency and 1.8-V dc power supply.
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113
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Chitnis G, Ding Z, Chang CL, Savran CA, Ziaie B. Laser-treated hydrophobic paper: an inexpensive microfluidic platform. LAB ON A CHIP 2011; 11:1161-5. [PMID: 21264372 DOI: 10.1039/c0lc00512f] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We report a method for fabricating inexpensive microfluidic platforms on paper using laser treatment. Any paper with a hydrophobic surface coating (e.g., parchment paper, wax paper, palette paper) can be used for this purpose. We were able to selectively modify the surface structure and property (hydrophobic to hydrophilic) of several such papers using a CO(2) laser. We created patterns down to a minimum feature size of 62±1 µm. The modified surface exhibited a highly porous structure which helped to trap/localize chemical and biological aqueous reagents for analysis. The treated surfaces were stable over time and were used to self-assemble arrays of aqueous droplets. Furthermore, we selectively deposited silica microparticles on patterned areas to allow lateral diffusion from one end of a channel to the other. Finally, we demonstrated the applicability of this platform to perform chemical reactions using luminol-based hemoglobin detection.
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Affiliation(s)
- Girish Chitnis
- School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA
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114
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Yang S, Wang CF, Chen S. A Release-Induced Response for the Rapid Recognition of Latent Fingerprints and Formation of Inkjet-Printed Patterns. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006537] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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115
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Yang S, Wang CF, Chen S. A Release-Induced Response for the Rapid Recognition of Latent Fingerprints and Formation of Inkjet-Printed Patterns. Angew Chem Int Ed Engl 2011; 50:3706-9. [DOI: 10.1002/anie.201006537] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2010] [Revised: 12/29/2010] [Indexed: 11/08/2022]
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116
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Gu Z, Zhao M, Sheng Y, Bentolila LA, Tang Y. Detection of mercury ion by infrared fluorescent protein and its hydrogel-based paper assay. Anal Chem 2011; 83:2324-9. [PMID: 21323346 DOI: 10.1021/ac103236g] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mercury is a highly hazardous and widespread pollutant with bioaccumulative properties. Novel approaches that meet the criteria of desired selectivity, high sensitivity, good biocompatibility, and low background interference in natural settings are continuously being explored. We herein describe a new strategy utilizing the combination of infrared fluorescent protein (IFP) and its chromophore as an infrared fluorescence probe for mercury ion (Hg(II)) detection. Hg(II) has been validated to have specific binding affinity to a cysteine residue (C24) of IFP, thereby inhibiting the conjugation of IFP chromophore biliverdin (BV) to C24 and "turning off" the infrared emission of IFP. The IFP/BV sensor has high selectivity toward Hg(II) among other metal ions over a broad pH range. The in vitro detection limit was determined to be less than 50 nM. As a genetically encoded probe, we demonstrate the IFP/BV sensor can serve as a tool to detect Hg(II) in living organisms or tissues. Moreover, we have exploited a protein-agarose hydrogel-based paper assay to immobilize IFP for detection of Hg(II) in a portable and robust fashion.
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Affiliation(s)
- Zhen Gu
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States.
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117
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Teles FSRR. Biosensors and rapid diagnostic tests on the frontier between analytical and clinical chemistry for biomolecular diagnosis of dengue disease: a review. Anal Chim Acta 2011; 687:28-42. [PMID: 21241843 PMCID: PMC7094386 DOI: 10.1016/j.aca.2010.12.011] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Revised: 11/09/2010] [Accepted: 12/07/2010] [Indexed: 11/26/2022]
Abstract
The past decades have witnessed enormous technological improvements towards the development of simple, cost-effective and accurate rapid diagnostic tests for detection and identification of infectious pathogens. Among them is dengue virus, the etiologic agent of the mosquito-borne dengue disease, one of the most important emerging infectious pathologies of nowadays. Dengue fever may cause potentially deadly hemorrhagic symptoms and is endemic in the tropical and sub-tropical world, being also a serious threat to temperate countries in the developed world. Effective diagnostics for dengue should be able to discriminate among the four antigenically related dengue serotypes and fulfill the requirements for successful decentralized (point-of-care) testing in the harsh environmental conditions found in most tropical regions. The accurate identification of circulating serotypes is crucial for the successful implementation of vector control programs based on reliable epidemiological predictions. This paper briefly summarizes the limitations of the main conventional techniques for biomolecular diagnosis of dengue disease and critically reviews some of the most relevant biosensors and rapid diagnostic tests developed, implemented and reported so far for point-of-care testing of dengue infections. The invaluable contributions of microfluidics and nanotechnology encompass the whole paper, while evaluation concerns of rapid diagnostic tests and foreseen technological improvements in this field are also overviewed for the diagnosis of dengue and other infectious and tropical diseases as well.
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Key Words
- cdc, centers for disease control
- denv1–4, dengue virus serotypes (1–4)
- ssrna, single-stranded ribonucleic acid
- orf, open-reading frame
- ns1, non-structural 1
- dhf, dengue hemorrhagic fever
- dss, dengue shock syndrome
- who, world health organization
- hi, hemagglutination-inhibition
- mac-eia, monoclonal antibody capture-enzyme linked immunosorbent assay
- rt-pcr, reverse transcription-polymerase chain reaction
- 3′-nr, 3′noncoding region
- rna, ribonucleic acid
- igg, immunoglobulin g
- igm, immunoglobulin m
- dna, deoxyribonucleic acid
- qcm, quartz-crystal microbalance
- mip, molecularly imprinted polymer
- gnp, gold nanoparticle
- sam, self-assembled monolayer
- bsa, bovine serum albumin
- spr, surface plasmon resonance
- nasba, nucleic acid sequence-based amplification
- s/n, signal-to-noise ratio
- cmos, complementary metal oxide semiconductor
- fia, flow-injection analysis
- fccs, fluorescence cross-correlation spectroscopy
- fcs, fluorescence correlation spectroscopy
- eis, electrochemical impedance spectroscopy
- bst, barium strontium titanate
- fet, field-effect transistor
- pna, peptide nucleic-acid
- lod, limit of detection
- cdna, complementary dna
- tdr, special programme for research and training in tropical diseases
- undp, united nations development programme
- pdvi, pediatric dengue vaccine initiative
- stard, standards for reporting of diagnostic accuracy
- fiocruz, fundação oswaldo cruz
- dpp®, dual-path platform
- blm, bilayer lipid membrane
- qd, quantum dot
- cnt, carbon nanotube
- ms, mass spectrometry
- sars, severe acute respiratory syndrome
- biosensor
- dengue
- diagnosis
- evaluation
- rapid test
- tropical disease
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Affiliation(s)
- Fernando Sérgio Rodrigues Ribeiro Teles
- Centre for Malaria and Tropical Diseases, Instituto de Higiene e Medicina Tropical, Universidade Nova de Lisboa, Rua da Junqueira 100, 1349-008 Lisboa, Portugal.
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118
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Lu Y, Lin B, Qin J. Patterned paper as a low-cost, flexible substrate for rapid prototyping of PDMS microdevices via "liquid molding". Anal Chem 2011; 83:1830-5. [PMID: 21280658 DOI: 10.1021/ac102577n] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This report describes the use of patterned paper as a low-cost, flexible substrate for rapidly prototyping PDMS microdevices via "liquid molding". The entire fabrication process consists simply of three steps: (1) fabrication of patterned paper in NC membrane by direct wax printing (or modified wax printing that we call "transfer wax printing"); (2) formation of liquid mold on wax-patterned NC membrane; (3) PDMS molding and curing on wax-patterned NC membrane anchored with liquid micropatterns. All these procedures can be finished within only 1.5 h without the use of a photomask, photoresist, UV lamp, etc. Through the use of wax-patterned NC membrane coupled with a liquid mold as a template, different PDMS microdevices such as microwells and microchannels have been fabricated to demonstrate the usefulness of the method for PDMS microfabrication. The height of microwells and microchannels can also be tailored flexibly by adjusting the liquid filling volume. This method for prototyping PDMS microdevices has some favorable merits including simple operation procedures, fast concept-to-device time, and low cost, indicating its potential for simple PDMS microdevice fabrication and applications.
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Affiliation(s)
- Yao Lu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, People's Republic of China
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119
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Yu J, Wang S, Ge L, Ge S. A novel chemiluminescence paper microfluidic biosensor based on enzymatic reaction for uric acid determination. Biosens Bioelectron 2011; 26:3284-9. [PMID: 21257303 DOI: 10.1016/j.bios.2010.12.044] [Citation(s) in RCA: 138] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 12/25/2010] [Accepted: 12/27/2010] [Indexed: 10/18/2022]
Abstract
In this work, chemiluminescence (CL) method was combined with microfluidic paper-based analytical device (μPAD) to establish a novel CL μPAD biosensor for the first time. This novel CL μPAD biosensor was based on enzyme reaction which produced H(2)O(2) while decomposing the substrate and the CL reaction between rhodanine derivative and generated H(2)O(2) in acid medium. Microchannels in μPAD were fabricated by cutting method. And the possible CL assay principle of this CL μPAD biosensor was explained. Rhodanine derivative system was used to reach the purpose of high sensitivity and well-defined signal for this CL μPAD biosensor. And the optimum reaction conditions were investigated. The quantitative determination of uric acid could be achieved by this CL μPAD biosensor with accurate and satisfactory result. And this biosensor could provide good reproducible results upon storage at 4°C for at least 10 weeks. The successful integration of μPAD and CL reaction made the final biosensor inexpensive, easy-to-use, low-volume, and portable for uric acid determination, which also greatly reduces the cost and increases the efficiency required for an analysis. We believe this simple, practical CL μPAD biosensor will be of interest for use in areas such as disease diagnosis.
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Affiliation(s)
- Jinghua Yu
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan, PR China.
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120
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Yeo LY, Chang HC, Chan PPY, Friend JR. Microfluidic devices for bioapplications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:12-48. [PMID: 21072867 DOI: 10.1002/smll.201000946] [Citation(s) in RCA: 299] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Harnessing the ability to precisely and reproducibly actuate fluids and manipulate bioparticles such as DNA, cells, and molecules at the microscale, microfluidics is a powerful tool that is currently revolutionizing chemical and biological analysis by replicating laboratory bench-top technology on a miniature chip-scale device, thus allowing assays to be carried out at a fraction of the time and cost while affording portability and field-use capability. Emerging from a decade of research and development in microfluidic technology are a wide range of promising laboratory and consumer biotechnological applications from microscale genetic and proteomic analysis kits, cell culture and manipulation platforms, biosensors, and pathogen detection systems to point-of-care diagnostic devices, high-throughput combinatorial drug screening platforms, schemes for targeted drug delivery and advanced therapeutics, and novel biomaterials synthesis for tissue engineering. The developments associated with these technological advances along with their respective applications to date are reviewed from a broad perspective and possible future directions that could arise from the current state of the art are discussed.
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Affiliation(s)
- Leslie Y Yeo
- Micro/Nanophysics Research Laboratory, Department of Mechanical & Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia
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121
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Fu E, Ramsey SA, Kauffman P, Lutz B, Yager P. Transport in two-dimensional paper networks. MICROFLUIDICS AND NANOFLUIDICS 2011; 10:29-35. [PMID: 22140373 PMCID: PMC3228841 DOI: 10.1007/s10404-010-0643-y] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Two-dimensional paper networks (2DPNs) hold great potential for transcending the capabilities and performance of today's paper-based analytical devices. Specifically, 2DPNs enable sophisticated multi-step chemical processing sequences for sample pretreatment and analysis at a cost and ease-of-use that make them appropriate for use in settings with low resources. A quantitative understanding of flow in paper networks is essential to realizing the potential of these networks. In this report, we provide a framework for understanding flow in simple 2DPNs using experiments, analytical expressions, and computational simulations.
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Affiliation(s)
- Elain Fu
- Department of Bioengineering, Box 355061, University of Washington, Seattle, WA, 98195,USA
| | - Stephen A. Ramsey
- Institute for Systems Biology, 1441 N. 34 St., Seattle, WA, 98103, USA
| | - Peter Kauffman
- Department of Bioengineering, Box 355061, University of Washington, Seattle, WA, 98195,USA
| | - Barry Lutz
- Department of Bioengineering, Box 355061, University of Washington, Seattle, WA, 98195,USA
| | - Paul Yager
- Department of Bioengineering, Box 355061, University of Washington, Seattle, WA, 98195,USA
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122
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Lee CH, Tian L, Singamaneni S. Paper-based SERS swab for rapid trace detection on real-world surfaces. ACS APPLIED MATERIALS & INTERFACES 2010; 2:3429-35. [PMID: 21128660 DOI: 10.1021/am1009875] [Citation(s) in RCA: 206] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
One of the important but often overlooked considerations in the design of surface-enhanced Raman scattering (SERS) substrates for trace detection is the efficiency of sample collection. Conventional designs based on rigid substrates such as silicon, alumina, and glass resist conformal contact with the surface under investigation, making the sample collection inefficient. We demonstrate a novel SERS substrate based on common filter paper adsorbed with gold nanorods, which allows conformal contact with real-world surfaces, thus dramatically enhancing the sample collection efficiency compared to conventional rigid substrates. We demonstrate the detection of trace amounts of analyte (140 pg spread over 4 cm2) by simply swabbing the surface under investigation with the novel SERS substrate. The hierarchical fibrous structure of paper serves as a 3D vasculature for easy uptake and transport of the analytes to the electromagnetic hot spots in the paper. Simple yet highly efficient and cost-effective SERS substrate demonstrated here brings SERS-based trace detection closer to real-world applications.
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123
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Yao L, Yung KY, Khan R, Chodavarapu VP, Bright FV. CMOS Imaging of Pin-Printed Xerogel-Based Luminescent Sensor Microarrays. IEEE SENSORS JOURNAL 2010; 10:1824-1832. [PMID: 24489484 PMCID: PMC3908789 DOI: 10.1109/jsen.2010.2047497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We present the design and implementation of a luminescence-based miniaturized multisensor system using pin-printed xerogel materials which act as host media for chemical recognition elements. We developed a CMOS imager integrated circuit (IC) to image the luminescence response of the xerogel-based sensor array. The imager IC uses a 26 × 20 (520 elements) array of active pixel sensors and each active pixel includes a high-gain phototransistor to convert the detected optical signals into electrical currents. The imager includes a correlated double sampling circuit and pixel address/digital control circuit; the image data is read-out as coded serial signal. The sensor system uses a light-emitting diode (LED) to excite the target analyte responsive luminophores doped within discrete xerogel-based sensor elements. As a prototype, we developed a 4 × 4 (16 elements) array of oxygen (O2) sensors. Each group of 4 sensor elements in the array (arranged in a row) is designed to provide a different and specific sensitivity to the target gaseous O2 concentration. This property of multiple sensitivities is achieved by using a strategic mix of two oxygen sensitive luminophores ([Ru(dpp)3]2+ and ([Ru(bpy)3]2+) in each pin-printed xerogel sensor element. The CMOS imager consumes an average power of 8 mW operating at 1 kHz sampling frequency driven at 5 V. The developed prototype system demonstrates a low cost and miniaturized luminescence multisensor system.
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Affiliation(s)
- Lei Yao
- Department of Electrical and Computer Engineering, McGill University, Montreal, QB, H3A2A7 Canada
| | - Ka Yi Yung
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260 USA
| | - Rifat Khan
- Department of Electrical and Computer Engineering, McGill University, Montreal, QB, H3A2A7 Canada
| | - Vamsy P. Chodavarapu
- Department of Electrical and Computer Engineering, McGill University, Montreal, QB, H3A2A7 Canada
| | - Frank V. Bright
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260 USA
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124
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Kauffman P, Fu E, Lutz B, Yager P. Visualization and measurement of flow in two-dimensional paper networks. LAB ON A CHIP 2010; 10:2614-7. [PMID: 20676410 PMCID: PMC4892119 DOI: 10.1039/c004766j] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The two-dimensional paper network (2DPN) is a versatile new microfluidic format for performing complex chemical processes. For chemical detection, for example, 2DPNs have the potential to exceed the capabilities and performance of existing paper-based lateral flow devices at a comparable cost and ease of use. To design such 2DPNs, it is necessary to predict 2D flow patterns and velocities within them, but because of the scattering of the paper matrix, conventional particle imaging velocimetry is not practical. In this note, we demonstrate two methods for visualization of flow in 2DPNs that are inexpensive, easy to implement, and quantifiable.
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Affiliation(s)
| | | | | | - Paul Yager
- Fax: 1-206-616-3928; Tel: 1-206-543-6126;
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125
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Martinez AW, Phillips ST, Nie Z, Cheng CM, Carrilho E, Wiley BJ, Whitesides GM. Programmable diagnostic devices made from paper and tape. LAB ON A CHIP 2010; 10:2499-504. [PMID: 20672179 DOI: 10.1039/c0lc00021c] [Citation(s) in RCA: 241] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
This paper describes three-dimensional microfluidic paper-based analytical devices (3-D microPADs) that can be programmed (postfabrication) by the user to generate multiple patterns of flow through them. These devices are programmed by pressing single-use 'on' buttons, using a stylus or a ballpoint pen. Pressing a button closes a small space (gap) between two vertically aligned microfluidic channels, and allows fluids to wick from one channel to the other. These devices are simple to fabricate, and are made entirely out of paper and double-sided adhesive tape. Programmable devices expand the capabilities of microPADs and provide a simple method for controlling the movement of fluids in paper-based channels. They are the conceptual equivalent of field-programmable gate arrays (FPGAs) widely used in electronics.
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Affiliation(s)
- Andres W Martinez
- Department of Chemistry & Chemical Biology, Harvard University, Cambridge, MA 02138, USA
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126
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Tan SN, Ge L, Wang W. Paper Disk on Screen Printed Electrode for One-Step Sensing with an Internal Standard. Anal Chem 2010; 82:8844-7. [DOI: 10.1021/ac1015062] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Swee Ngin Tan
- Natural Sciences and Science Education Academic Group, Nanyang Technological University, 1 Nanyang Walk, 637616, Singapore, and School of Chemical and Biological Engineering, Yancheng Institute of Technology, 9 Yingbin Road, Yancheng, 224051, China
| | - Liya Ge
- Natural Sciences and Science Education Academic Group, Nanyang Technological University, 1 Nanyang Walk, 637616, Singapore, and School of Chemical and Biological Engineering, Yancheng Institute of Technology, 9 Yingbin Road, Yancheng, 224051, China
| | - Wei Wang
- Natural Sciences and Science Education Academic Group, Nanyang Technological University, 1 Nanyang Walk, 637616, Singapore, and School of Chemical and Biological Engineering, Yancheng Institute of Technology, 9 Yingbin Road, Yancheng, 224051, China
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127
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Di Risio S, Yan N. Adsorption and inactivation behavior of horseradish peroxidase on various substrates. Colloids Surf B Biointerfaces 2010; 79:397-402. [DOI: 10.1016/j.colsurfb.2010.05.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2009] [Revised: 04/26/2010] [Accepted: 05/02/2010] [Indexed: 10/19/2022]
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128
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Fu E, Kauffman P, Lutz B, Yager P. Chemical signal amplification in two-dimensional paper networks. SENSORS AND ACTUATORS. B, CHEMICAL 2010; 149:325-328. [PMID: 20706615 PMCID: PMC2917776 DOI: 10.1016/j.snb.2010.06.024] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Two-dimensional paper networks (2DPNs) hold great potential for extending the utility of paper-based chemical and biochemical diagnostics at a cost and ease-of-use that is comparable to conventional lateral flow strips. 2DPNs enable the automated sequential delivery of multiple reagents to a detection region with a single user activation step, and therefore have the potential to extend the processing capabilities of inexpensive paper-based assays with comparable ease of use to conventional lateral flow tests. In this communication, we used a simple 3 inlet 2DPN to perform signal amplification of a colloidal gold label using a gold enhancement solution, thus demonstrating the capability of 2DPNs to perform processes that can improve limits of detection.
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129
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Dungchai W, Chailapakul O, Henry CS. Use of multiple colorimetric indicators for paper-based microfluidic devices. Anal Chim Acta 2010; 674:227-33. [DOI: 10.1016/j.aca.2010.06.019] [Citation(s) in RCA: 231] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2010] [Revised: 06/15/2010] [Accepted: 06/16/2010] [Indexed: 10/19/2022]
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130
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Coltro WKT, de Jesus DP, da Silva JAF, do Lago CL, Carrilho E. Toner and paper-based fabrication techniques for microfluidic applications. Electrophoresis 2010; 31:2487-98. [DOI: 10.1002/elps.201000063] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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131
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Abe K, Kotera K, Suzuki K, Citterio D. Inkjet-printed paperfluidic immuno-chemical sensing device. Anal Bioanal Chem 2010; 398:885-93. [DOI: 10.1007/s00216-010-4011-2] [Citation(s) in RCA: 163] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2010] [Revised: 07/03/2010] [Accepted: 07/05/2010] [Indexed: 10/19/2022]
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132
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Wang S, Xu F, Demirci U. Advances in developing HIV-1 viral load assays for resource-limited settings. Biotechnol Adv 2010; 28:770-81. [PMID: 20600784 DOI: 10.1016/j.biotechadv.2010.06.004] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 06/21/2010] [Accepted: 06/21/2010] [Indexed: 12/23/2022]
Abstract
Commercial HIV-1 RNA viral load assays have been routinely used in developed countries to monitor antiretroviral treatment (ART). However, these assays require expensive equipment and reagents, well-trained operators, and established laboratory infrastructure. These requirements restrict their use in resource-limited settings where people are most afflicted with the HIV-1 epidemic. Inexpensive alternatives such as the Ultrasensitive p24 assay, the reverse transcriptase (RT) assay and in-house reverse transcription quantitative polymerase chain reaction (RT-qPCR) have been developed. However, they are still time-consuming, technologically complex and inappropriate for decentralized laboratories as point-of-care (POC) tests. Recent advances in microfluidics and nanotechnology offer new strategies to develop low-cost, rapid, robust and simple HIV-1 viral load monitoring systems. We review state-of-the-art technologies used for HIV-1 viral load monitoring in both developed and developing settings. Emerging approaches based on microfluidics and nanotechnology, which have potential to be integrated into POC HIV-1 viral load assays, are also discussed.
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Affiliation(s)
- ShuQi Wang
- Demirci Bio-Acoustic-MEMS in Medicine (BAMM) Laboratory, Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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133
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Cheng CM, Martinez AW, Gong J, Mace CR, Phillips ST, Carrilho E, Mirica KA, Whitesides GM. Paper-Based ELISA. Angew Chem Int Ed Engl 2010; 49:4771-4. [PMID: 20512830 DOI: 10.1002/anie.201001005] [Citation(s) in RCA: 460] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chao-Min Cheng
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA
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134
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Cheng CM, Martinez A, Gong J, Mace C, Phillips S, Carrilho E, Mirica K, Whitesides G. Paper-Based ELISA. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001005] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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135
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Noh H, Phillips ST. Metering the Capillary-Driven Flow of Fluids in Paper-Based Microfluidic Devices. Anal Chem 2010; 82:4181-7. [DOI: 10.1021/ac100431y] [Citation(s) in RCA: 158] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hyeran Noh
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802
| | - Scott T. Phillips
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802
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136
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Martinez AW, Phillips ST, Whitesides GM, Carrilho E. Diagnostics for the developing world: microfluidic paper-based analytical devices. Anal Chem 2010; 82:3-10. [PMID: 20000334 DOI: 10.1021/ac9013989] [Citation(s) in RCA: 1589] [Impact Index Per Article: 113.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Microfluidic paper-based analytical devices (microPADs) are a new class of point-of-care diagnostic devices that are inexpensive, easy to use, and designed specifically for use in developing countries. (To listen to a podcast about this feature, please go to the Analytical Chemistry multimedia page at pubs.acs.org/page/ancham/audio/index.html.).
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137
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Apilux A, Dungchai W, Siangproh W, Praphairaksit N, Henry CS, Chailapakul O. Lab-on-Paper with Dual Electrochemical/Colorimetric Detection for Simultaneous Determination of Gold and Iron. Anal Chem 2010; 82:1727-32. [DOI: 10.1021/ac9022555] [Citation(s) in RCA: 224] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amara Apilux
- Sensor Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand, Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattanna, Bangkok, 10110, Thailand, Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, and Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Wijitar Dungchai
- Sensor Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand, Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattanna, Bangkok, 10110, Thailand, Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, and Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Weena Siangproh
- Sensor Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand, Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattanna, Bangkok, 10110, Thailand, Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, and Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Narong Praphairaksit
- Sensor Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand, Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattanna, Bangkok, 10110, Thailand, Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, and Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Charles S. Henry
- Sensor Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand, Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattanna, Bangkok, 10110, Thailand, Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, and Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
| | - Orawon Chailapakul
- Sensor Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok 10330, Thailand, Department of Chemistry, Faculty of Science, Srinakharinwirot University, Sukhumvit 23, Wattanna, Bangkok, 10110, Thailand, Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, and Center for Petroleum, Petrochemicals and Advanced Materials, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand
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138
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Yang M, Gong S. Immunosensor for the detection of cancer biomarker based on percolated graphene thin film. Chem Commun (Camb) 2010; 46:5796-8. [DOI: 10.1039/c0cc00675k] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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139
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Thermal stability of bioactive enzymatic papers. Colloids Surf B Biointerfaces 2010; 75:239-46. [DOI: 10.1016/j.colsurfb.2009.08.042] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Revised: 08/25/2009] [Accepted: 08/26/2009] [Indexed: 11/18/2022]
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140
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Lu Y, Shi W, Qin J, Lin B. Fabrication and Characterization of Paper-Based Microfluidics Prepared in Nitrocellulose Membrane By Wax Printing. Anal Chem 2009; 82:329-35. [DOI: 10.1021/ac9020193] [Citation(s) in RCA: 293] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yao Lu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, People’s Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Weiwei Shi
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, People’s Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Jianhua Qin
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, People’s Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Bingcheng Lin
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, People’s Republic of China, and Graduate School of Chinese Academy of Sciences, Beijing, People’s Republic of China
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141
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Balu B, Berry AD, Hess DW, Breedveld V. Patterning of superhydrophobic paper to control the mobility of micro-liter drops for two-dimensional lab-on-paper applications. LAB ON A CHIP 2009; 9:3066-3075. [PMID: 19823721 DOI: 10.1039/b909868b] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Superhydrophobic paper substrates were patterned with high surface energy black ink using commercially available desktop printing technology. The shape and size of the ink islands were designed to control the adhesion forces on water drops in two directions, parallel ('drag-adhesion') and perpendicular ('extensional-adhesion') to the substrate. Experimental data on the adhesion forces shows good agreement with classical models for 'drag' (Furmidge equation) and 'extensional' adhesion (modified Dupré equation). The tunability of the two adhesion forces was used to implement four basic unit operations for the manipulation of liquid drops on the paper substrates: storage, transfer, mixing and sampling. By combining these basic functionalities it is possible to design simple two-dimensional lab-on-paper (LOP) devices. In our 2D LOP prototype, liquid droplets adhere to the porous substrate, rather than absorbing into the paper; as a result, liquid droplets remain accessible for further quantitative testing and analysis, after performing simple qualitative on-chip testing. In addition, the use of commercially available desktop printers and word processing software to generate ink patterns enable end users to design LOP devices for specific applications.
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Affiliation(s)
- Balamurali Balu
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0100, USA
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142
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Sia S. Cutting edge: thin, lightweight, foldable thermochromic displays on paper. LAB ON A CHIP 2009; 9:2763. [PMID: 19967109 DOI: 10.1039/b913540p] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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143
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Hossain SMZ, Luckham RE, McFadden MJ, Brennan JD. Reagentless Bidirectional Lateral Flow Bioactive Paper Sensors for Detection of Pesticides in Beverage and Food Samples. Anal Chem 2009; 81:9055-64. [PMID: 19788278 DOI: 10.1021/ac901714h] [Citation(s) in RCA: 204] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. M. Zakir Hossain
- Department of Chemistry & Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1
| | - Roger E. Luckham
- Department of Chemistry & Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1
| | - Meghan J. McFadden
- Department of Chemistry & Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1
| | - John D. Brennan
- Department of Chemistry & Chemical Biology, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M1
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144
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Carrilho E, Martinez AW, Whitesides GM. Understanding Wax Printing: A Simple Micropatterning Process for Paper-Based Microfluidics. Anal Chem 2009; 81:7091-5. [PMID: 20337388 DOI: 10.1021/ac901071p] [Citation(s) in RCA: 973] [Impact Index Per Article: 64.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emanuel Carrilho
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, and Instituto de Química de São Carlos, Universidade de São Paulo, 13566-590 São Carlos-SP, Brazil
| | - Andres W. Martinez
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, and Instituto de Química de São Carlos, Universidade de São Paulo, 13566-590 São Carlos-SP, Brazil
| | - George M. Whitesides
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, and Instituto de Química de São Carlos, Universidade de São Paulo, 13566-590 São Carlos-SP, Brazil
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145
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Carrilho E, Phillips ST, Vella SJ, Martinez AW, Whitesides GM. Paper Microzone Plates. Anal Chem 2009; 81:5990-8. [DOI: 10.1021/ac900847g] [Citation(s) in RCA: 322] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Emanuel Carrilho
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, and Instituto de Química de São Carlos, Universidade de São Paulo 13566-590 São Carlos-SP, Brazil
| | - Scott T. Phillips
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, and Instituto de Química de São Carlos, Universidade de São Paulo 13566-590 São Carlos-SP, Brazil
| | - Sarah J. Vella
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, and Instituto de Química de São Carlos, Universidade de São Paulo 13566-590 São Carlos-SP, Brazil
| | - Andres W. Martinez
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, and Instituto de Química de São Carlos, Universidade de São Paulo 13566-590 São Carlos-SP, Brazil
| | - George M. Whitesides
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, and Instituto de Química de São Carlos, Universidade de São Paulo 13566-590 São Carlos-SP, Brazil
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Dungchai W, Chailapakul O, Henry CS. Electrochemical Detection for Paper-Based Microfluidics. Anal Chem 2009; 81:5821-6. [DOI: 10.1021/ac9007573] [Citation(s) in RCA: 914] [Impact Index Per Article: 60.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wijitar Dungchai
- Sensor Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand, Center of Excellence for Petroleum, Petrochemicals, and Advanced Materials, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872
| | - Orawon Chailapakul
- Sensor Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand, Center of Excellence for Petroleum, Petrochemicals, and Advanced Materials, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872
| | - Charles S. Henry
- Sensor Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand, Center of Excellence for Petroleum, Petrochemicals, and Advanced Materials, Chulalongkorn University, Patumwan, Bangkok, 10330, Thailand, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872
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