151
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Shang L, Fu F, Cheng Y, Wang H, Liu Y, Zhao Y, Gu Z. Photonic Crystal Microbubbles as Suspension Barcodes. J Am Chem Soc 2015; 137:15533-9. [DOI: 10.1021/jacs.5b10612] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Luoran Shang
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
| | - Fanfan Fu
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yao Cheng
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
| | - Huan Wang
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yuxiao Liu
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yuanjin Zhao
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
- Laboratory
of Environment and Biosafety, Research Institute of Southeast University in Suzhou, Suzhou 215123, China
| | - Zhongze Gu
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
- Laboratory
of Environment and Biosafety, Research Institute of Southeast University in Suzhou, Suzhou 215123, China
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152
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Abstract
Due to their hydrophilic, biocompatible, and highly tunable nature, hydrogel materials have attracted strong interest in the recent years for numerous biotechnological applications. In particular, their solution-like environment and non-fouling nature in complex biological samples render hydrogels as ideal substrates for biosensing applications. Hydrogel coatings, and later, gel dot surface microarrays, were successfully used in sensitive nucleic acid assays and immunoassays. More recently, new microfabrication techniques for synthesizing encoded particles from hydrogel materials have enabled the development of hydrogel-based suspension arrays. Lithography processes and droplet-based microfluidic techniques enable generation of libraries of particles with unique spectral or graphical codes, for multiplexed sensing in biological samples. In this review, we discuss the key questions arising when designing hydrogel particles dedicated to biosensing. How can the hydrogel material be engineered in order to tune its properties and immobilize bioprobes inside? What are the strategies to fabricate and encode gel particles, and how can particles be processed and decoded after the assay? Finally, we review the bioassays reported so far in the literature that have used hydrogel particle arrays and give an outlook of further developments of the field.
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Affiliation(s)
- Gaelle C. Le Goff
- Novartis Institutes for Biomedical Research, 250 Massachusetts
Avenue, Cambridge 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of
Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - Rathi L. Srinivas
- Department of Chemical Engineering, Massachusetts Institute of
Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
| | - W. Adam Hill
- Novartis Institutes for Biomedical Research, 250 Massachusetts
Avenue, Cambridge 02139, USA
| | - Patrick S. Doyle
- Department of Chemical Engineering, Massachusetts Institute of
Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
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153
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Jung Y, Lee H, Park TJ, Kim S, Kwon S. Programmable gradational micropatterning of functional materials using maskless lithography controlling absorption. Sci Rep 2015; 5:15629. [PMID: 26490360 PMCID: PMC4615026 DOI: 10.1038/srep15629] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 09/28/2015] [Indexed: 11/09/2022] Open
Abstract
The demand for patterning functional materials precisely on surfaces of stimuli-responsive devices has increased in many research fields. In situ polymerization technology is one of the most convenient ways to place the functional materials on a desired location with micron-scale accuracy. To fabricate stimuli-responsive surfaces, controlling concentration of the functional material is much as important as micropatterning them. However, patterning and controlling concentration of the functional materials simultaneously requires an additional process, such as preparing multiple co-flow microfluidic structures and numbers of solutions with various concentrations. Despite applying these processes, fabricating heterogeneous patterns in large scale (millimeter scale) is still impossible. In this study, we propose an advanced in situ polymerization technique to pattern the surface in micron scale in a concentration-controlled manner. Because the concentration of the functional materials is manipulated by self-assembly on the surface, a complex pattern could be easily fabricated without any additional procedure. The complex pattern is pre-designed with absorption amount of the functional material, which is pre-determined by the duration of UV exposure. We show that the resolution reaches up to 2.5 μm and demonstrate mm-scale objects, maintaining the same resolution. We also fabricated Multi-bit barcoded micro particles verify the flexibility of our system.
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Affiliation(s)
- Yushin Jung
- Institutes of Entrepreneurial BioConvergence, Seoul National University, Seoul 151-742, South Korea.,Department of Electrical and Computer Engineering, Seoul National University, Seoul 151-744, South Korea
| | - Howon Lee
- Institutes of Entrepreneurial BioConvergence, Seoul National University, Seoul 151-742, South Korea
| | - Tae-Joon Park
- Nano Systems Institute, Seoul National University, Seoul 151-744, South Korea
| | - Sungsik Kim
- Institutes of Entrepreneurial BioConvergence, Seoul National University, Seoul 151-742, South Korea.,Interdisciplinary Program for Bioengineering, Seoul National University, Seoul 151-744, South Korea
| | - Sunghoon Kwon
- Institutes of Entrepreneurial BioConvergence, Seoul National University, Seoul 151-742, South Korea.,Department of Electrical and Computer Engineering, Seoul National University, Seoul 151-744, South Korea.,Seoul National University Hospital Biomedical Research Institute, Seoul National University hospital, Seoul 110-744, South Korea
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154
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Cusano AM, Causa F, Moglie RD, Falco N, Scognamiglio PL, Aliberti A, Vecchione R, Battista E, Marasco D, Savarese M, Raucci U, Rega N, Netti PA. Integration of binding peptide selection and multifunctional particles as tool-box for capture of soluble proteins in serum. J R Soc Interface 2015; 11:rsif.2014.0718. [PMID: 25100324 DOI: 10.1098/rsif.2014.0718] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In this paper, we report on a general approach for the detection of a specific tumoural biomarker directly in serum. Such detection is made possible using a protein-binding peptide selected through an improved phage display technique and then conjugated to engineered microparticles (MPs). Protein biomarkers represent an unlimited source of information for non-invasive diagnostic and prognostic tests; MP-based assays are becoming largely used in manipulation of soluble biomarkers, but their direct use in serum is hampered by the complex biomolecular environment. Our technique overcomes the current limitations as it produces a selective MP--engineered with an antifouling layer--that 'captures' the relevant protein staying impervious to the background. Our system succeeds in fishing-out the human tumour necrosis factor alpha directly in serum with a high selectivity degree. Our method could have great impact in soluble protein manipulation and detection for a wide variety of diagnostic applications.
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Affiliation(s)
- Angela Maria Cusano
- Center for Advanced Biomaterials for Health Care@CRIB, Istituto Italiano di Tecnologia, Naples, Italy
| | - Filippo Causa
- Center for Advanced Biomaterials for Health Care@CRIB, Istituto Italiano di Tecnologia, Naples, Italy Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples 'Federico II', Naples, Italy Department of Chemical and Materials Engineering and Industrial Production, University of Naples 'Federico II', Naples, Italy
| | - Raffaella Della Moglie
- Center for Advanced Biomaterials for Health Care@CRIB, Istituto Italiano di Tecnologia, Naples, Italy
| | - Nunzia Falco
- Center for Advanced Biomaterials for Health Care@CRIB, Istituto Italiano di Tecnologia, Naples, Italy
| | | | - Anna Aliberti
- Center for Advanced Biomaterials for Health Care@CRIB, Istituto Italiano di Tecnologia, Naples, Italy
| | - Raffaele Vecchione
- Center for Advanced Biomaterials for Health Care@CRIB, Istituto Italiano di Tecnologia, Naples, Italy
| | - Edmondo Battista
- Center for Advanced Biomaterials for Health Care@CRIB, Istituto Italiano di Tecnologia, Naples, Italy
| | - Daniela Marasco
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples 'Federico II', DFM-Scarl, Naples, Italy
| | - Marika Savarese
- Center for Advanced Biomaterials for Health Care@CRIB, Istituto Italiano di Tecnologia, Naples, Italy Department of Chemical Science, University of Naples 'Federico II', Naples, Italy
| | - Umberto Raucci
- Department of Chemical Science, University of Naples 'Federico II', Naples, Italy
| | - Nadia Rega
- Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples 'Federico II', Naples, Italy Department of Chemical Science, University of Naples 'Federico II', Naples, Italy
| | - Paolo Antonio Netti
- Center for Advanced Biomaterials for Health Care@CRIB, Istituto Italiano di Tecnologia, Naples, Italy Interdisciplinary Research Centre on Biomaterials (CRIB), University of Naples 'Federico II', Naples, Italy Department of Chemical and Materials Engineering and Industrial Production, University of Naples 'Federico II', Naples, Italy
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155
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Sim JY, Lee GH, Kim SH. Microfluidic Design of Magnetoresponsive Photonic Microcylinders with Multicompartments. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:4938-4945. [PMID: 26172959 DOI: 10.1002/smll.201501325] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Revised: 06/13/2015] [Indexed: 06/04/2023]
Abstract
Colloidal photonic structures have been designed to have granular format to use them for paint pigments, encoded carriers, and display pixels. However, conventional approaches only provide spherical or discoid shapes, restricting their applications. Cylindrical granules with fan-shaped compartments in the cross section are appealing for microcarriers with abundant optical codes and active display pigments for color switching. In this work, a stratified laminar flow of concentrated silica particles is employed, formed in a cylindrical microchannel, to produce cylindrical photonic microparticles with multiple compartments. To accomplish this, a microfluidic device is designed to have one cylindrical main channel connected with four branch channels. Four different photocurable suspensions are independently injected through the branches to form quarter-cylindrically compartmentalized streams in the main channel. Local ultraviolet irradiation on the main channel polymerizes the suspension, thereby forming cylindrical microparticles with four compartments. In each compartment, silica particles form ordered array which develops particle size-dependent structural color. Therefore, different colors can be incorporated into single microcylinder by employing different sizes of silica particles. Moreover, one of the compartments can be rendered to be magnetoresponsive by embedding aligned magnetic particles, which enables the remote control of microcylinder orientation and therefore the switching of structural colors.
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Affiliation(s)
- Jae Young Sim
- Department of Chemical Engineering and Biomolecular Engineering, KAIST, Daejeon, 305-701, Korea
| | - Gun Ho Lee
- Department of Chemical Engineering and Biomolecular Engineering, KAIST, Daejeon, 305-701, Korea
| | - Shin-Hyun Kim
- Department of Chemical Engineering and Biomolecular Engineering, KAIST, Daejeon, 305-701, Korea
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156
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Immunomagnetic separation of Salmonella with tailored magnetic micro and nanocarriers. A comparative study. Talanta 2015; 143:198-204. [DOI: 10.1016/j.talanta.2015.05.035] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 05/11/2015] [Accepted: 05/15/2015] [Indexed: 11/19/2022]
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157
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Le Goff GC, Lee J, Gupta A, Hill WA, Doyle PS. High-Throughput Contact Flow Lithography. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2015; 2:1500149. [PMID: 27980910 PMCID: PMC5115321 DOI: 10.1002/advs.201500149] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 05/19/2015] [Indexed: 05/20/2023]
Abstract
High-throughput fabrication of graphically encoded hydrogel microparticles is achieved by combining flow contact lithography in a multichannel microfluidic device and a high capacity 25 mm LED UV source. Production rates of chemically homogeneous particles are improved by two orders of magnitude. Additionally, the custom-built contact lithography instrument provides an affordable solution for patterning complex microstructures on surfaces.
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Affiliation(s)
- Gaelle C Le Goff
- Department of Chemical Engineering Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA; Novartis Institutes for Biomedical Research 250 Massachusetts Avenue Cambridge MA 02139 USA
| | - Jiseok Lee
- Department of Chemical Engineering Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA; School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology Eonyang-eup Ulju-gun Ulsan 689-798 South Korea
| | - Ankur Gupta
- Department of Chemical Engineering Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - William Adam Hill
- Novartis Institutes for Biomedical Research 250 Massachusetts Avenue Cambridge MA 02139 USA
| | - Patrick S Doyle
- Department of Chemical Engineering Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
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158
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Xu W, Yao Y, Klassen JS, Serpe MJ. Magnetic field assisted programming of particle shapes and patterns. SOFT MATTER 2015; 11:7151-7158. [PMID: 26256518 DOI: 10.1039/c5sm01820j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Anisotropic particles have generated an enormous amount of research interest due to their applications for drug delivery, electronic displays and as micromotors. However, up till now, there is no single protocol capable of generating particles of "patchy" composition with a variety of well-defined and predictable shapes. To address this, in this submission we dispersed magnetic nanoparticles (MNPs) in a non-magnetic fluid containing monomer and crosslinker. This solution was added to the surface of Teflon, which was submerged in the solvent 2,2,4-trimethylpentane. Under these conditions a round, stable droplet was formed on the Teflon. Upon exposure to a permanent magnet, the MNPs self-assembled into clusters with a variety shapes and sizes. The shape and size of the clusters depended on the magnetic field strength, which we controlled by systematically varying the distance between the magnet and the droplet. Interestingly, the shape of the liquid droplet was also influenced by the magnetic field. Upon polymerization, the MNP patterns and the droplet shape was preserved. We also show that very complex MNP patterns and particle shapes could be generated by controlling the distance between the drop and both a magnet above and below the droplet. In this case, the resulting patterns depended on whether the magnets were attracting or repelling each other, which was capable of changing the field lines that the MNPs align with. Overall, this approach is capable of generating particles with predictable MNP patterns and particle shapes without the use of any templates or complex synthetic steps. Furthermore, by using a sprayer (or similar approaches, e.g., ink jet printing) this technique can be easily scaled up to produce many complex anisotropic particles in a short amount of time.
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Affiliation(s)
- Wenwen Xu
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
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159
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Kim J, Bae S, Song S, Chung K, Kwon S. Fiber composite slices for multiplexed immunoassays. BIOMICROFLUIDICS 2015; 9:044109. [PMID: 26339310 PMCID: PMC4522008 DOI: 10.1063/1.4927590] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 07/17/2015] [Indexed: 05/11/2023]
Abstract
Fabrication methods for the development of multiplexed immunoassay platforms primarily depend on the individual functionalization of reaction chambers to achieve a heterogeneous reacting substrate composition, which increases the overall manufacturing time and cost. Here, we describe a new type of low-cost fabrication method for a scalable immunoassay platform based on cotton threads. The manufacturing process involves the fabrication of functionalized fibers and the arrangement of these fibers into a bundle; this bundle is then sectioned to make microarray-like particles with a predefined surface architecture. With these sections, composed of heterogeneous thread fragments with different types of antibodies, we demonstrated quantitative and 7-plex immunoassays. We expect that this methodology will prove to be a versatile, low-cost, and highly scalable method for the fabrication of multiplexed bioassay platforms.
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Affiliation(s)
- Jiyun Kim
- Nano Systems Institute, Seoul National University , Seoul 151-744, South Korea
| | | | | | - Keumsim Chung
- QuantaMatrix Inc., Se oul National University , Seoul 151-744, South Korea
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160
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Lawson JL, Jenness NJ, Clark RL. Optomagnetically Controlled Microparticles Manufactured with Glancing Angle Deposition. PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION : MEASUREMENT AND DESCRIPTION OF PARTICLE PROPERTIES AND BEHAVIOR IN POWDERS AND OTHER DISPERSE SYSTEMS 2015; 32:734-742. [PMID: 28919669 PMCID: PMC5596926 DOI: 10.1002/ppsc.201500033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Optical trapping and magnetic trapping are common micro-manipulation techniques for controlling colloids including micro- and nano-particles. Combining these two manipulation strategies allows for a larger range of applied forces and decoupled control of rotation and translation; each of which are beneficial properties for many applications including force spectroscopy and advanced manufacturing. However, optical trapping and magnetic trapping have conflicting material requirements inhibiting the combination of these methodologies. In this paper, anisotropic micron scaled particles capable of being simultaneously controlled by optical and magnetic trapping are synthesized using a glancing angle deposition (GLAD) technique. The anisotropic alignment of dielectric and ferromagnetic materials limits the optical scattering from the metallic components which typically prevents stable optical trapping in three dimensions. Compared to the current state of the art, the benefits of this approach are two-fold. First, the composite structure allows for larger volumes of ferromagnetic material so that larger magnetic moments may be applied without inhibiting the stability of optical trapping. Secondly, the robustness of the synthesis process is greatly improved. The dual optical and magnetic functionality of the synthesized colloids is demonstrated by simultaneously optically translating and magnetically rotating a magnetic GLAD particle using a custom designed opto-magnetic trapping system.
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161
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Takamura T, Ko PJ, Sharma J, Yukino R, Ishizawa S, Sandhu A. Magnetic-particle-sensing based diagnostic protocols and applications. SENSORS 2015; 15:12983-98. [PMID: 26053747 PMCID: PMC4507658 DOI: 10.3390/s150612983] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 05/18/2015] [Accepted: 05/19/2015] [Indexed: 11/16/2022]
Abstract
Magnetic particle-labeled biomaterial detection has attracted much attention in recent years for a number of reasons; easy manipulation by external magnetic fields, easy functionalization of the surface, and large surface-to-volume ratio, to name but a few. In this review, we report on our recent investigations into the detection of nano-sized magnetic particles. First, the detection by Hall magnetic sensor with lock-in amplifier and alternative magnetic field is summarized. Then, our approach to detect sub-200 nm diameter target magnetic particles via relatively large micoro-sized “columnar particles” by optical microscopy is described. Subsequently, we summarize magnetic particle detection based on optical techniques; one method is based on the scattering of the magnetically-assembled nano-sized magnetic bead chain in rotating magnetic fields and the other one is based on the reflection of magnetic target particles and porous silicon. Finally, we report recent works with reference to more familiar industrial products (such as smartphone-based medical diagnosis systems and magnetic removal of unspecific-binded nano-sized particles, or “magnetic washing”).
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Affiliation(s)
- Tsukasa Takamura
- Electronics-Inspired Interdisciplinary Research Institute (EIIRIS), Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi, Aichi 441-8580, Japan.
| | - Pil Ju Ko
- Research Promotion Center, The University of Electro-Communications, 1-5-1 Chofugaoka Chofu, Tokyo 182-8585, Japan.
| | - Jaiyam Sharma
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi, Aichi 441-8580, Japan.
| | - Ryoji Yukino
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi, Aichi 441-8580, Japan.
| | - Shunji Ishizawa
- Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi, Aichi 441-8580, Japan.
| | - Adarsh Sandhu
- Electronics-Inspired Interdisciplinary Research Institute (EIIRIS), Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku, Toyohashi, Aichi 441-8580, Japan.
- Research Promotion Center, The University of Electro-Communications, 1-5-1 Chofugaoka Chofu, Tokyo 182-8585, Japan.
- Department of Engineering Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan.
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162
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Kang H, Jeong S, Koh Y, Geun Cha M, Yang JK, Kyeong S, Kim J, Kwak SY, Chang HJ, Lee H, Jeong C, Kim JH, Jun BH, Kim YK, Hong Jeong D, Lee YS. Direct identification of on-bead peptides using surface-enhanced Raman spectroscopic barcoding system for high-throughput bioanalysis. Sci Rep 2015; 5:10144. [PMID: 26017924 PMCID: PMC4446893 DOI: 10.1038/srep10144] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 03/30/2015] [Indexed: 01/07/2023] Open
Abstract
Recently, preparation and screening of compound libraries remain one of the most challenging tasks in drug discovery, biomarker detection, and biomolecular profiling processes. So far, several distinct encoding/decoding methods such as chemical encoding, graphical encoding, and optical encoding have been reported to identify those libraries. In this paper, a simple and efficient surface-enhanced Raman spectroscopic (SERS) barcoding method using highly sensitive SERS nanoparticles (SERS ID) is presented. The 44 kinds of SERS IDs were able to generate simple codes and could possibly generate more than one million kinds of codes by incorporating combinations of different SERS IDs. The barcoding method exhibited high stability and reliability under bioassay conditions. The SERS ID encoding based screening platform can identify the peptide ligand on the bead and also quantify its binding affinity for specific protein. We believe that our SERS barcoding technology is a promising method in the screening of one-bead-one-compound (OBOC) libraries for drug discovery.
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Affiliation(s)
- Homan Kang
- Interdisciplinary Program in Nano-Science and Technology, Seoul National University, Seoul 151-744, Republic of Korea
| | - Sinyoung Jeong
- Department of Chemistry Education, Seoul National University, Seoul 151-744, Republic of Korea
| | - Yul Koh
- School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-744, Republic of Korea
| | - Myeong Geun Cha
- Department of Chemistry Education, Seoul National University, Seoul 151-744, Republic of Korea
| | - Jin-Kyoung Yang
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - San Kyeong
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Jaehi Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Seon-Yeong Kwak
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Hye-Jin Chang
- Department of Chemistry Education, Seoul National University, Seoul 151-744, Republic of Korea
| | - Hyunmi Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Cheolhwan Jeong
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea
| | - Jong-Ho Kim
- Department of Chemical Engineering, Hanyang University, Ansan, 426-791, Republic of Korea
| | - Bong-Hyun Jun
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Republic of Korea
| | - Yong-Kweon Kim
- School of Electrical Engineering and Computer Science, Seoul National University, Seoul 151-744, Republic of Korea
| | - Dae Hong Jeong
- Interdisciplinary Program in Nano-Science and Technology, Seoul National University, Seoul 151-744, Republic of Korea
| | - Yoon-Sik Lee
- 1] Interdisciplinary Program in Nano-Science and Technology, Seoul National University, Seoul 151-744, Republic of Korea [2] School of Chemical and Biological Engineering, Seoul National University, Seoul 151-744, Republic of Korea
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163
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Liu Y, Liu L, He Y, Zhu L, Ma H. Decoding of Quantum Dots Encoded Microbeads Using a Hyperspectral Fluorescence Imaging Method. Anal Chem 2015; 87:5286-93. [DOI: 10.1021/acs.analchem.5b00398] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yixi Liu
- Department
of Physics, Tsinghua University, Beijing 100084, China
| | - Le Liu
- Institute
of Green Chemistry and Energy, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
| | - Yonghong He
- Department
of Physics, Tsinghua University, Beijing 100084, China
| | - Liang Zhu
- Department
of Physics, Tsinghua University, Beijing 100084, China
| | - Hui Ma
- Department
of Physics, Tsinghua University, Beijing 100084, China
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164
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Abstract
Complex three-dimensional (3D)-shaped particles could play unique roles in biotechnology, structural mechanics and self-assembly. Current methods of fabricating 3D-shaped particles such as 3D printing, injection moulding or photolithography are limited because of low-resolution, low-throughput or complicated/expensive procedures. Here, we present a novel method called optofluidic fabrication for the generation of complex 3D-shaped polymer particles based on two coupled processes: inertial flow shaping and ultraviolet (UV) light polymerization. Pillars within fluidic platforms are used to deterministically deform photosensitive precursor fluid streams. The channels are then illuminated with patterned UV light to polymerize the photosensitive fluid, creating particles with multi-scale 3D geometries. The fundamental advantages of optofluidic fabrication include high-resolution, multi-scalability, dynamic tunability, simple operation and great potential for bulk fabrication with full automation. Through different combinations of pillar configurations, flow rates and UV light patterns, an infinite set of 3D-shaped particles is available, and a variety are demonstrated. The current methods of fabricating three-dimensional particles include photolithography, layer-by-layer printing and several others. Here, Paulsen et al. demonstrate an optofluidic approach, whereby masked ultraviolet light is illuminated on photosensitive fluids whose cross-sections are shaped by fluid inertia.
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165
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The Scanning TMR Microscope for Biosensor Applications. BIOSENSORS-BASEL 2015; 5:172-86. [PMID: 25849347 PMCID: PMC4493544 DOI: 10.3390/bios5020172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 03/13/2015] [Accepted: 03/27/2015] [Indexed: 11/17/2022]
Abstract
We present a novel tunnel magnetoresistance (TMR) scanning microscope set-up capable of quantitatively imaging the magnetic stray field patterns of micron-sized elements in 3D. By incorporating an Anderson loop measurement circuit for impedance matching, we are able to detect magnetoresistance changes of as little as 0.006%/Oe. By 3D rastering a mounted TMR sensor over our magnetic barcodes, we are able to characterise the complex domain structures by displaying the real component, the amplitude and the phase of the sensor’s impedance. The modular design, incorporating a TMR sensor with an optical microscope, renders this set-up a versatile platform for studying and imaging immobilised magnetic carriers and barcodes currently employed in biosensor platforms, magnetotactic bacteria and other complex magnetic domain structures of micron-sized entities. The quantitative nature of the instrument and its ability to produce vector maps of magnetic stray fields has the potential to provide significant advantages over other commonly used scanning magnetometry techniques.
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166
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Bae HJ, Bae S, Park C, Han S, Kim J, Kim LN, Kim K, Song SH, Park W, Kwon S. Biomimetic microfingerprints for anti-counterfeiting strategies. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:2083-9. [PMID: 25656227 DOI: 10.1002/adma.201405483] [Citation(s) in RCA: 137] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 01/02/2015] [Indexed: 05/10/2023]
Abstract
An unclonable, fingerprint-mimicking anti-counterfeiting strategy is presented that encrypts polymeric particles with randomly generated silica film wrinkles. The generated wrinkle codes are as highly unique as human fingerprints and are technically irreproducible. Superior to previous physical unclonable functions, codes are tunable on demand and generable on various geometries. Reliable authentication of real-world products that have these microfingerprints is demonstrated using optical decoding methods.
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Affiliation(s)
- Hyung Jong Bae
- Department of Electrical and Computer Engineering, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 151-744, South Korea; Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 151-744, South Korea; Institute of Entrepreneurial Bio Convergence, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 151-744, South Korea
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167
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Vaidya SV, Couzis A, Maldarelli C. Reduction in aggregation and energy transfer of quantum dots incorporated in polystyrene beads by kinetic entrapment due to cross-linking during polymerization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:3167-79. [PMID: 25674811 DOI: 10.1021/la503251s] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We report the development of barcoded polystyrene microbeads, approximately 50 μm in diameter, which are encoded by incorporating multicolored semiconductor fluorescent nanocrystals (quantum dots or QDs) within the microbeads and using the emission spectrum of the embedded QDs as a spectral label. The polymer/nanocrystal bead composites are formed by polymerizing emulsified liquid droplets of styrene monomer and QDs suspended in an immiscible continuous phase (suspension polymerization). We focus specifically on the effect of divinylbenzene (DVB) added to cross-link the linearly growing styrene polymer chains and the effect of this cross-linking on the state of aggregation of the nanocrystals in the composite. Aggregated states of multicolor QDs give rise to nonradiative resonance energy transfer (RET) which distorts the emission label from a spectrum recorded in a reference solvent in which the nanocrystals are well dispersed and unaggregated. A simple barcode is chosen of a mixture of QDs emitting at 560 (yellow) and 620 nm (red). We find that for linear chain growth (no DVB), the QDs aggregate as is evident from the emission spectrum and the QD distribution as seen from confocal laser scanning microscopy (CLSM) and transmission electron microscopy (TEM) images. Increasing the extent of cross-linking by the addition of DVB is shown to significantly decrease the aggregation and provide a clear label. We suggest that in the absence of cross-linking, linearly growing polymer chains, through enthalpic and entropic effects, drive the nanocrystals into inclusions, while cross-linking kinetically entraps the particle and prevents their aggregation.
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Affiliation(s)
- Shyam V Vaidya
- Department of Chemical Engineering, City College of New York, 160 Convent Avenue, New York, New York 10031, United States
| | - Alex Couzis
- Department of Chemical Engineering, City College of New York, 160 Convent Avenue, New York, New York 10031, United States
| | - Charles Maldarelli
- Department of Chemical Engineering, City College of New York, 160 Convent Avenue, New York, New York 10031, United States
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168
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Volpetti F, Garcia-Cordero J, Maerkl SJ. A microfluidic platform for high-throughput multiplexed protein quantitation. PLoS One 2015; 10:e0117744. [PMID: 25680117 PMCID: PMC4334502 DOI: 10.1371/journal.pone.0117744] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 12/31/2014] [Indexed: 11/18/2022] Open
Abstract
We present a high-throughput microfluidic platform capable of quantitating up to 384 biomarkers in 4 distinct samples by immunoassay. The microfluidic device contains 384 unit cells, which can be individually programmed with pairs of capture and detection antibody. Samples are quantitated in each unit cell by four independent MITOMI detection areas, allowing four samples to be analyzed in parallel for a total of 1,536 assays per device. We show that the device can be pre-assembled and stored for weeks at elevated temperature and we performed proof-of-concept experiments simultaneously quantitating IL-6, IL-1β, TNF-α, PSA, and GFP. Finally, we show that the platform can be used to identify functional antibody combinations by screening 64 antibody combinations requiring up to 384 unique assays per device.
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Affiliation(s)
- Francesca Volpetti
- Institute of Bioengineering, School of Engineering, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland
| | - Jose Garcia-Cordero
- Institute of Bioengineering, School of Engineering, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland
| | - Sebastian J. Maerkl
- Institute of Bioengineering, School of Engineering, Ecole Polytechnique Federale de Lausanne, Lausanne, Switzerland
- * E-mail:
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169
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Lee SS, Kim B, Kim SK, Won JC, Kim YH, Kim SH. Robust microfluidic encapsulation of cholesteric liquid crystals toward photonic ink capsules. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:627-633. [PMID: 25323332 DOI: 10.1002/adma.201403271] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Revised: 08/19/2014] [Indexed: 05/28/2023]
Abstract
Robust photonic microcapsules are created by microfluidic encapsulation of cholesteric liquid crystals with a hydrogel membrane. The membrane encloses the cholesteric core without leakage in water and the core exhibits pronounced structural colors. The photonic ink capsules, which have a precisely controlled bandgap position and size, provide new opportunities in colorimetric micro-thermometers and optoelectric applications.
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Affiliation(s)
- Sang Seok Lee
- Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, Daejeon, 305-701, Korea
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170
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Falconnet D, She J, Tornay R, Leimgruber E, Bernasconi D, Lagopoulos L, Renaud P, Demierre N, van den Bogaard P. Rapid, sensitive and real-time multiplexing platform for the analysis of protein and nucleic-acid biomarkers. Anal Chem 2015; 87:1582-9. [PMID: 25567587 DOI: 10.1021/ac502741c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We describe a multiplexing technology, named Evalution, based on novel digitally encoded microparticles in microfluidic channels. Quantitative multiplexing is becoming increasingly important for research and routine clinical diagnostics, but fast, easy-to-use, flexible and highly reproducible technologies are needed to leverage the advantages of multiplexing. The presented technology has been tailored to ensure (i) short assay times and high reproducibility thanks to reaction-limited binding regime, (ii) dynamic control of assay conditions and real-time binding monitoring allowing optimization of multiple parameters within a single assay run, (iii) compatibility with various immunoassay formats such as coflowing the samples and detection antibodies simultaneously and hence simplifying workflows, (iv) analyte quantification based on initial binding rates leading to increased system dynamic range and (v) high sensitivity via enhanced fluorescence collection. These key features are demonstrated with assays for proteins and nucleic acids showing the versatility of this technology.
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171
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Zhao Y, Cheng Y, Shang L, Wang J, Xie Z, Gu Z. Microfluidic synthesis of barcode particles for multiplex assays. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:151-174. [PMID: 25331055 DOI: 10.1002/smll.201401600] [Citation(s) in RCA: 136] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 08/20/2014] [Indexed: 06/04/2023]
Abstract
The increasing use of high-throughput assays in biomedical applications, including drug discovery and clinical diagnostics, demands effective strategies for multiplexing. One promising strategy is the use of barcode particles that encode information about their specific compositions and enable simple identification. Various encoding mechanisms, including spectroscopic, graphical, electronic, and physical encoding, have been proposed for the provision of sufficient identification codes for the barcode particles. These particles are synthesized in various ways. Microfluidics is an effective approach that has created exciting avenues of scientific research in barcode particle synthesis. The resultant particles have found important application in the detection of multiple biological species as they have properties of high flexibility, fast reaction times, less reagent consumption, and good repeatability. In this paper, research progress in the microfluidic synthesis of barcode particles for multiplex assays is discussed. After introducing the general developing strategies of the barcode particles, the focus is on studies of microfluidics, including their design, fabrication, and application in the generation of barcode particles. Applications of the achieved barcode particles in multiplex assays will be described and emphasized. The prospects for future development of these barcode particles are also presented.
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Affiliation(s)
- Yuanjin Zhao
- State Key Laboratory of Bioelectronics, Southeast University, Nanjing, 210096, China; Laboratory of Environment and Biosafety Research, Institute of Southeast University in Suzhou, Suzhou, 215123, China
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172
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Weis A, Liang F, Gao J, Barnard RT, Corrie S. RNA and DNA Diagnostics on Microspheres: Current and Emerging Methods. RNA TECHNOLOGIES 2015. [DOI: 10.1007/978-3-319-17305-4_10] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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173
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Love DM, Vyas KN, Fernández-Pacheco A, Llandro J, Palfreyman JJ, Mitrelias T, Barnes CHW. A composite element bit design for magnetically encoded microcarriers for future combinatorial chemistry applications. RSC Adv 2015. [DOI: 10.1039/c4ra16991c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A composite element (CE) bit design for magnetically encoded microcarriers provides an increased coercivity range for longer bit codes as well as significant improvements to encoding density, reliability and read-out.
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Affiliation(s)
- David M. Love
- Cavendish Laboratory
- Department of Physics
- University of Cambridge
- Cambridge CB3 0HE
- UK
| | - Kunal N. Vyas
- Cavendish Laboratory
- Department of Physics
- University of Cambridge
- Cambridge CB3 0HE
- UK
| | | | - Justin Llandro
- Cavendish Laboratory
- Department of Physics
- University of Cambridge
- Cambridge CB3 0HE
- UK
| | - Justin J. Palfreyman
- Cavendish Laboratory
- Department of Physics
- University of Cambridge
- Cambridge CB3 0HE
- UK
| | - Thanos Mitrelias
- Cavendish Laboratory
- Department of Physics
- University of Cambridge
- Cambridge CB3 0HE
- UK
| | - Crispin H. W. Barnes
- Cavendish Laboratory
- Department of Physics
- University of Cambridge
- Cambridge CB3 0HE
- UK
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174
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Seo KD, Kim DS, Sánchez S. Fabrication and applications of complex-shaped microparticles via microfluidics. LAB ON A CHIP 2015; 15:3622-6. [PMID: 26272308 DOI: 10.1039/c5lc90091c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Complex-shaped microparticles (MPs) have attracted extensive interest in a myriad of scientific and engineering fields in recent years for their distinct morphology and capability in combining different functions within a single particle. Microfluidic techniques offer an intriguing method for fabricating MPs with excellent monodispersity and complex morphology in parallel while controlling their number and size precisely and independently. To date, there are two notable microfluidics approaches for the synthesis of complex-shaped MPs, namely droplet based, and flow-lithography based microfluidics approaches. It is undoubted that the application of complex-shaped MPs via microfluidic fabrication will hold great promise in a variety of fields including microfabrication, analytical chemistry and biomedicine.
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Affiliation(s)
- K D Seo
- Department of Mechanical Engineering, POSTECH (Pohang University of Science and Technology), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, Korea.
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175
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Kim LN, Kim M, Jung K, Bae HJ, Jang J, Jung Y, Kim J, Kwon S. Shape-encoded silica microparticles for multiplexed bioassays. Chem Commun (Camb) 2015; 51:12130-3. [DOI: 10.1039/c5cc02048d] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Shape-encoded silica microparticles for use in multiplexed bioassays were fabricated by using optofluidic maskless lithography (OFML) and tetraethylorthosilicate (TEOS) polymerization.
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Affiliation(s)
- Lily Nari Kim
- School of Electrical Engineering and Computer Science
- Seoul National University
- Seoul 151-744
- South Korea
| | - Mira Kim
- School of Electrical Engineering and Computer Science
- Seoul National University
- Seoul 151-744
- South Korea
| | - Keumsim Jung
- School of Electrical Engineering and Computer Science
- Seoul National University
- Seoul 151-744
- South Korea
- Quanta Matrix corp
| | - Hyung Jong Bae
- School of Electrical Engineering and Computer Science
- Seoul National University
- Seoul 151-744
- South Korea
| | - Jisung Jang
- School of Electrical Engineering and Computer Science
- Seoul National University
- Seoul 151-744
- South Korea
- Quanta Matrix corp
| | - Yushin Jung
- School of Electrical Engineering and Computer Science
- Seoul National University
- Seoul 151-744
- South Korea
| | - Jiyun Kim
- School of Electrical Engineering and Computer Science
- Seoul National University
- Seoul 151-744
- South Korea
| | - Sunghoon Kwon
- School of Electrical Engineering and Computer Science
- Seoul National University
- Seoul 151-744
- South Korea
- Quanta Matrix corp
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176
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Lee SY, Yang S. Compartment fabrication of magneto-responsive Janus microrod particles. Chem Commun (Camb) 2015; 51:1639-42. [DOI: 10.1039/c4cc07863b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Monodispersed magneto-responsive microrod particles of variable magnetic/non-magnetic ratios and chemical compositions are created by compartment fabrication in a single poly(dimethylsiloxane) (PDMS) mold.
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Affiliation(s)
- Su Yeon Lee
- Department of Materials Science and Engineering
- University of Pennsylvania
- Philadelphia
- USA
| | - Shu Yang
- Department of Materials Science and Engineering
- University of Pennsylvania
- Philadelphia
- USA
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177
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Zhang Y, Sun J, Zou Y, Chen W, Zhang W, Xi JJ, Jiang X. Barcoded microchips for biomolecular assays. Anal Chem 2014; 87:900-6. [PMID: 25513831 DOI: 10.1021/ac5032379] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Multiplexed assay of analytes is of great importance for clinical diagnostics and other analytical applications. Barcode-based bioassays with the ability to encode and decode may realize this goal in a straightforward and consistent manner. We present here a microfluidic barcoded chip containing several sets of microchannels with different widths, imitating the commonly used barcode. A single barcoded microchip can carry out tens of individual protein/nucleic acid assays (encode) and immediately yield all assay results by a portable barcode reader or a smartphone (decode). The applicability of a barcoded microchip is demonstrated by human immunodeficiency virus (HIV) immunoassays for simultaneous detection of three targets (anti-gp41 antibody, anti-gp120 antibody, and anti-gp36 antibody) from six human serum samples. We can also determine seven pathogen-specific oligonucleotides by a single chip containing both positive and negative controls.
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Affiliation(s)
- Yi Zhang
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology , Beijing 100190, China
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178
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Bong KW, Lee J, Doyle PS. Stop flow lithography in perfluoropolyether (PFPE) microfluidic channels. LAB ON A CHIP 2014; 14:4680-7. [PMID: 25316504 DOI: 10.1039/c4lc00877d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Stop Flow Lithography (SFL) is a microfluidic-based particle synthesis method for creating anisotropic multifunctional particles with applications that range from MEMS to biomedical engineering. Polydimethylsiloxane (PDMS) has been typically used to construct SFL devices as the material enables rapid prototyping of channels with complex geometries, optical transparency, and oxygen permeability. However, PDMS is not compatible with most organic solvents which limit the current range of materials that can be synthesized with SFL. Here, we demonstrate that a fluorinated elastomer, called perfluoropolyether (PFPE), can be an alternative oxygen permeable elastomer for SFL microfluidic flow channels. We fabricate PFPE microfluidic devices with soft lithography and synthesize anisotropic multifunctional particles in the devices via the SFL process--this is the first demonstration of SFL with oxygen lubrication layers in a non-PDMS channel. We benchmark the SFL performance of the PFPE devices by comparing them to PDMS devices. We synthesized particles in both PFPE and PDMS devices under the same SFL conditions and found the difference of particle dimensions was less than a micron. PFPE devices can greatly expand the range of precursor materials that can be processed in SFL because the fluorinated devices are chemically resistant to most organic solvents, an inaccessible class of reagents in PDMS-based devices due to swelling.
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Affiliation(s)
- Ki Wan Bong
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, USA.
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179
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Zheng F, Cheng Y, Wang J, Lu J, Zhang B, Zhao Y, Gu Z. Aptamer-functionalized barcode particles for the capture and detection of multiple types of circulating tumor cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:7333-8. [PMID: 25251012 DOI: 10.1002/adma.201403530] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Indexed: 05/21/2023]
Abstract
Aptamer-functionalized barcode particles are employed to capture and detect various types of circulating tumor cells (CTCs). The particles are spherical colloidal crystal clusters, and the reflection properties that arise from their structures are how their codes are evaluated. Aptamer functionalization (with TD05, Sgc8, and Sgd5) make the particles interact with specific CTC types; dendrimers are used to amplify the effect of the aptamers, allowing for increased sensitivity, reliability, and specificity in CTC capture, detection, and subsequent release.
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Affiliation(s)
- Fuyin Zheng
- State Key Laboratory of Bioelectronics, Southeast University, Nanjing, 210096, China
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180
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Roche J, Gianessi E, Kuhn A. Physico-chemical milling for controlled size reduction of metal beads. Phys Chem Chem Phys 2014; 16:21234-6. [PMID: 25195806 DOI: 10.1039/c4cp03279a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report a new physico-chemical method based on bipolar electrochemistry for producing spherical metal beads with a well-controlled size. Applying an electric field to a low conductivity electrolyte containing metal beads leads to a polarization potential across the beads, which triggers their electrodissolution. Upon stirring, their size decreases gradually and results in a final population which is spherical and monodisperse. Furthermore, the spherical character of shapeless particles increased to form isotropic objects. The process is versatile, self-limiting and produces beads of different final diameters depending on the applied potential. Finally, the removed material can be recycled at one of the feeder electrodes.
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Affiliation(s)
- J Roche
- Univ. Bordeaux, ISM, CNRS UMR 5255, ENSCBP, 16 avenue Pey Berland, 33607 Pessac Cedex, France.
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181
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Sun S, Yao H, Zhang F, Zhu J. Multiplexed DNA detection based on positional encoding/decoding with self-assembled DNA nanostructures. Chem Sci 2014; 6:930-934. [PMID: 29560179 PMCID: PMC5811145 DOI: 10.1039/c4sc02696a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 10/15/2014] [Indexed: 01/02/2023] Open
Abstract
A multiplexed DNA detection strategy with fast hybridization kinetics based on positional encoding/decoding with self-assembled DNA nanostructures has been developed.
Current multiplexed analysis methods suffer from either slow reaction kinetics (planar arrays) or complicated encoding/decoding procedures (suspension arrays). We report herein a multiplexed DNA detection strategy that addresses these issues, based on positional encoding/decoding with self-assembled DNA nanostructures. The strategy enables the acquisition of high-resolution, consistent, and quantitative assay results in a single round of a transmission electron microscopy imaging operation. Applications in polymerase chain reaction-free settings and assays of other structurally distinct targets can be anticipated through the implementation of the strategy with miniaturized femtoliter/attoliter dispensing technology and readily accessible DNA conjugate structures.
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Affiliation(s)
- Sha Sun
- Department of Polymer Science and Engineering , School of Chemistry and Chemical Engineering , State Key Laboratory of Coordination Chemistry , Nanjing National Laboratory of Microstructures , Nanjing University , Nanjing 210093 , China .
| | - Huaxin Yao
- Department of Polymer Science and Engineering , School of Chemistry and Chemical Engineering , State Key Laboratory of Coordination Chemistry , Nanjing National Laboratory of Microstructures , Nanjing University , Nanjing 210093 , China .
| | - Feifei Zhang
- Department of Polymer Science and Engineering , School of Chemistry and Chemical Engineering , State Key Laboratory of Coordination Chemistry , Nanjing National Laboratory of Microstructures , Nanjing University , Nanjing 210093 , China .
| | - Jin Zhu
- Department of Polymer Science and Engineering , School of Chemistry and Chemical Engineering , State Key Laboratory of Coordination Chemistry , Nanjing National Laboratory of Microstructures , Nanjing University , Nanjing 210093 , China .
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182
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Sim JY, Choi JH, Lim JM, Cho S, Kim SH, Yang SM. Microfluidic molding of photonic microparticles with engraved elastomeric membranes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:3979-3985. [PMID: 24947445 DOI: 10.1002/smll.201400005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 05/17/2014] [Indexed: 06/03/2023]
Abstract
A microfluidic approach to prepare photonic microparticles by repeated molding of photocurable colloidal suspension is reported. An elastomeric membrane with negative relieves which vertically separates two microfluidic channels is integrated; bottom channel is used for suspension flow, whereas water-filled top channel is used for pneumatic actuation of the membrane. Upon pressurization of the top channel, membrane is deformed to confine the suspension into its negative relieves, which is then polymerized by UV irradiation, making microparticles with mold shape. The microparticles are released from the mold by relieving the pneumatic pressure and flows through the bottom channel. This one cycle of molding, polymerization, and release can be repeatedly performed in microfluidic device of which pneumatic valves are actuated in a programmed manner. The microparticles exhibit structural colors when the suspension contains high concentration of silica nanoparticles; the nanoparticles form regular arrays and the microparticles reflect specific wavelength of light as a photonic crystals. The silica nanoparticles can be selectively removed to make pronounced structural colors. In addition, the microparticles can be further functionalized by embedding magnetic particles in the matrix of the microparticles, enabling the remote control of rotational motion of microparticles.
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Affiliation(s)
- Jae Young Sim
- Department of Chemical and Biomolecular Engineering, KAIST, Daejeon, 305-701, Korea; National Creative Research Initiative Center for Integrated Optofluidic Systems, KAIST, Daejeon, 305-701, Korea
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183
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Jia X, Hu Y, Wang K, Liang R, Li J, Wang J, Zhu J. Uniform core-shell photonic crystal microbeads as microcarriers for optical encoding. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:11883-11889. [PMID: 25233156 DOI: 10.1021/la502858f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We demonstrate a rapid and robust method to fabricate uniform core-shell photonic crystal (PC) microbeads by the microfluidic and centrifugation-redispersion technique. Colored crystalline colloidal arrays (CCAs) were first prepared through centrifugation-redispersion approach by self-assembly of polystyrene-poly(N-isopropylacrylamide) (PS-PNIPAm) core/shell nanoparticles (NPs). Different from the conventional NPs (e.g., charged PS or PNIPAm NPs), PS-PNIPAm NPs could easily self-assemble into well-ordered CCAs by only one purification step without laborious pretreatment (e.g., dialysis or ion exchange) or slow solvent-evaporation process. The CCAs is then encapsulated into a transparent polymer shell with functional groups (e.g., copolymer of ETPTA and butyl acrylate (BA)), triggering the formation of core-shell PC microbeads which can be used as optical encoding microcarriers. Importantly, this technique allows us to produce core-shell PC microbeads in a rapid and robust way, and the optical reflections of the PC microbeads appear highly stable to various external stimuli (e.g., temperature, pH value, and ionic strength) relying on the features of the CCAs core and protection of the polymer shell. Moreover, various probe biomolecules (e.g., proteins, antibodies, and so on) can be easily linked on the surface of the core-shell PC microbeads owing to the hydrophilic modification induced by the hydrolysis of BA on the microbead surface, enabling the multiplex biomolecular detection.
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Affiliation(s)
- Xiaolu Jia
- Key Laboratory of Large-Format Battery Materials and Systems of the Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, P. R. China
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184
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Li J, Wang H, Dong S, Zhu P, Diao G, Yang Z. Quantum-dot-tagged photonic crystal beads for multiplex detection of tumor markers. Chem Commun (Camb) 2014; 50:14589-92. [DOI: 10.1039/c4cc07019d] [Citation(s) in RCA: 30] [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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185
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Lu J, Zheng F, Cheng Y, Ding H, Zhao Y, Gu Z. Hybrid inverse opals for regulating cell adhesion and orientation. NANOSCALE 2014; 6:10650-10656. [PMID: 25088946 DOI: 10.1039/c4nr02626h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Cell adhesion and alignment are two important considerations in tissue engineering applications as they can regulate the subsequent cell proliferation activity and differentiation program. Although many effects have been applied to regulate the adhesion or alignment of cells by using physical and chemical methods, it is still a challenge to regulate these cell behaviors simultaneously. Here, we present novel substrates with tunable nanoscale patterned structures for regulating the adhesion and alignment of cells. The substrates with different degrees of pattern orientation were achieved by customizing the amount of stretching applied to polymer inverse opal films. Cells cultured on these substrates showed an adjustable morphology and alignment. Moreover, soft hydrogels, which have poor plasticity and are difficult to cast into patterned structures, were applied to infiltrate the inverse opal structure. We demonstrated that the adhesion ratio of cells could be regulated by these hybrid substrates, as well as adjusting the cell morphology and alignment. These features of functional inverse opal substrates make them suitable for important applications in tissue engineering.
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Affiliation(s)
- Jie Lu
- State Key Laboratory of Bioelectronics, Southeast University, Nanjing, 210096, China.
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186
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Lee HS, Kim JH, Lee JS, Sim JY, Seo JY, Oh YK, Yang SM, Kim SH. Magnetoresponsive discoidal photonic crystals toward active color pigments. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5801-7. [PMID: 24866690 DOI: 10.1002/adma.201401155] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 04/30/2014] [Indexed: 05/27/2023]
Abstract
Photonic microdisks with a multilayered structure are designed from photocurable suspensions by step-by-step photolithography. In each step of photolithography, either a colloidal photonic crystal or a magnetic-particle-laden layer is stacked over the windows of a photomask. Sequential photolithography enables the creation of multilayered photonic microdisks that have brilliant structural colors that can be switched by an external magnetic field.
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Affiliation(s)
- Hye Soo Lee
- Department of Chemical and Biomolecular, Engineering and KINC, KAIST, Daejeon, 305-701, Korea
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187
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Abstract
Bacteria are omnipotent and they can be found everywhere. The study of bacterial pathogens has been happening from olden days to prevent epidemics, food spoilage, losses in agricultural production, and loss of lives. Modern techniques in DNA based species identification are considered. So, there is a need to acquire simple and quick identification technique. Hence, this review article covers the efficacy of DNA barcoding of bacteria. Routine DNA barcoding involves the production of PCR amplicons from particular regions to sequence them and these sequence data are used to identify or “barcode” that organism to make a distinction from other species.
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188
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Abstract
Microfluidics has experienced massive growth in the past two decades, and especially with advances in rapid prototyping researchers have explored a multitude of channel structures, fluid and particle mixtures, and integration with electrical and optical systems towards solving problems in healthcare, biological and chemical analysis, materials synthesis, and other emerging areas that can benefit from the scale, automation, or the unique physics of these systems. Inertial microfluidics, which relies on the unconventional use of fluid inertia in microfluidic platforms, is one of the emerging fields that make use of unique physical phenomena that are accessible in microscale patterned channels. Channel shapes that focus, concentrate, order, separate, transfer, and mix particles and fluids have been demonstrated, however physical underpinnings guiding these channel designs have been limited and much of the development has been based on experimentally-derived intuition. Here we aim to provide a deeper understanding of mechanisms and underlying physics in these systems which can lead to more effective and reliable designs with less iteration. To place the inertial effects into context we also discuss related fluid-induced forces present in particulate flows including forces due to non-Newtonian fluids, particle asymmetry, and particle deformability. We then highlight the inverse situation and describe the effect of the suspended particles acting on the fluid in a channel flow. Finally, we discuss the importance of structured channels, i.e. channels with boundary conditions that vary in the streamwise direction, and their potential as a means to achieve unprecedented three-dimensional control over fluid and particles in microchannels. Ultimately, we hope that an improved fundamental and quantitative understanding of inertial fluid dynamic effects can lead to unprecedented capabilities to program fluid and particle flow towards automation of biomedicine, materials synthesis, and chemical process control.
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Affiliation(s)
- Hamed Amini
- Department of Bioengineering, University of California, 420 Westwood Plaza, 5121 Engineering V, P.O. Box 951600, Los Angeles, CA 90095, USA.
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189
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Kang DH, Jung HS, Ahn N, Yang SM, Seo S, Suh KY, Chang PS, Jeon NL, Kim J, Kim K. Janus-compartmental alginate microbeads having polydiacetylene liposomes and magnetic nanoparticles for visual lead(II) detection. ACS APPLIED MATERIALS & INTERFACES 2014; 6:10631-10637. [PMID: 24926923 DOI: 10.1021/am502319m] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Janus-compartmental alginate microbeads having two divided phases of sensory polydiacetylene (PDA) liposomes and magnetic nanoparticles were fabricated for facile sensory applications. The sensory liposomes are composed of PDA for label-free signal generation and 1,2-dipalmitoyl-sn-glycero-3-galloyl (DPGG) lipids whose galloyl headgroup has specific interactions with lead(II). The second phase having magnetic nanoparticles is designed for convenient handling of the microbeads, such as washing, solvent exchange, stirring, and detection, by applying magnetic field. Selective and convenient colorimetric detection of lead(II) and efficient removal of lead(II) by alginate matrix at the same time are demonstrated.
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Affiliation(s)
- Do Hyun Kang
- Department of Mechanical and Aerospace Engineering, WCU Program for Multiscale Mechanical Design, ‡Institute of Advanced Machinery and Design, Department of Mechanical and Aerospace Engineering, §Department of Agricultural Biotechnology, Center for Food and Bioconvergence, and Research Institute for Agriculture and Life Sciences, Seoul National University , Seoul, 151-742, Republic of Korea
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190
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Diaz-Montes J, Xie Y, Rodero I, Zola J, Ganapathysubramanian B, Parashar M. Federated Computing for the Masses--Aggregating Resources to Tackle Large-Scale Engineering Problems. Comput Sci Eng 2014. [DOI: 10.1109/mcse.2013.134] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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191
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Lee IH, Lee SH, Keum CM, Kim SU, Lee SD. Combinatorial color arrays based on optical micro-resonators in monolithic architecture. OPTICS EXPRESS 2014; 22:15320-15327. [PMID: 24977623 DOI: 10.1364/oe.22.015320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We demonstrate two types of combinatorial color arrays based on the Fabry-Perot (FP) micro-resonators in monolithic architecture. Optical micro-resonators corresponding to color elements are constructed using a soluble dielectric material between two transreflective layers by transfer-printing in either a pattern-by-pattern or a pattern-on-pattern fashion. The color palette depends primarily on the thickness and the refractive index of a dielectric material embedded in the micro-resonator. A self-defined lateral gap between two adjacent color elements provides the functionality of light-blocking by the underlying background layer. A prototype of a liquid crystal display incorporated with our combinatorial color array is also demonstrated. This monolithic integration of different FP micro-resonators leads to a versatile platform to build up a new class of color arrays for a variety of visual applications including displays and coloration devices.
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192
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Lu Y, Lu J, Zhao J, Cusido J, Raymo FM, Yuan J, Yang S, Leif RC, Huo Y, Piper JA, Paul Robinson J, Goldys EM, Jin D. On-the-fly decoding luminescence lifetimes in the microsecond region for lanthanide-encoded suspension arrays. Nat Commun 2014; 5:3741. [PMID: 24796249 PMCID: PMC4024748 DOI: 10.1038/ncomms4741] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Accepted: 03/27/2014] [Indexed: 12/23/2022] Open
Abstract
Significant multiplexing capacity of optical time-domain coding has been recently demonstrated by tuning luminescence lifetimes of the upconversion nanoparticles called 'τ-Dots'. It provides a large dynamic range of lifetimes from microseconds to milliseconds, which allows creating large libraries of nanotags/microcarriers. However, a robust approach is required to rapidly and accurately measure the luminescence lifetimes from the relatively slow-decaying signals. Here we show a fast algorithm suitable for the microsecond region with precision closely approaching the theoretical limit and compatible with the rapid scanning cytometry technique. We exploit this approach to further extend optical time-domain multiplexing to the downconversion luminescence, using luminescence microspheres wherein lifetimes are tuned through luminescence resonance energy transfer. We demonstrate real-time discrimination of these microspheres in the rapid scanning cytometry, and apply them to the multiplexed probing of pathogen DNA strands. Our results indicate that tunable luminescence lifetimes have considerable potential in high-throughput analytical sciences.
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Affiliation(s)
- Yiqing Lu
- Advanced Cytometry Laboratories, ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, Sydney, New South Wales 2109, Australia
| | - Jie Lu
- Advanced Cytometry Laboratories, ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, Sydney, New South Wales 2109, Australia
| | - Jiangbo Zhao
- Advanced Cytometry Laboratories, ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, Sydney, New South Wales 2109, Australia
| | - Janet Cusido
- Laboratory for Molecular Photonics, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, USA
| | - Françisco M Raymo
- Laboratory for Molecular Photonics, University of Miami, 1301 Memorial Drive, Coral Gables, Florida 33146-0431, USA
| | - Jingli Yuan
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian 116024, China
| | - Sean Yang
- Newport Instruments, 3345 Hopi Place, San Diego, California 92117-3516, USA
| | - Robert C. Leif
- Newport Instruments, 3345 Hopi Place, San Diego, California 92117-3516, USA
| | - Yujing Huo
- Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
| | - James A. Piper
- Advanced Cytometry Laboratories, ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, Sydney, New South Wales 2109, Australia
| | - J Paul Robinson
- Purdue University Cytometry Laboratories, Bindley Bioscience Center, Purdue University, West Lafayette, Indiana 47907, USA
| | - Ewa M. Goldys
- Advanced Cytometry Laboratories, ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, Sydney, New South Wales 2109, Australia
| | - Dayong Jin
- Advanced Cytometry Laboratories, ARC Centre of Excellence for Nanoscale BioPhotonics (CNBP), Macquarie University, Sydney, New South Wales 2109, Australia
- Purdue University Cytometry Laboratories, Bindley Bioscience Center, Purdue University, West Lafayette, Indiana 47907, USA
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193
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Lee J, Bisso PW, Srinivas RL, Kim JJ, Swiston AJ, Doyle PS. Universal process-inert encoding architecture for polymer microparticles. NATURE MATERIALS 2014; 13:524-9. [PMID: 24728464 DOI: 10.1038/nmat3938] [Citation(s) in RCA: 223] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 03/04/2014] [Indexed: 05/20/2023]
Abstract
Polymer microparticles with unique, decodable identities are versatile information carriers with a small footprint. Widespread incorporation into industrial processes, however, is limited by a trade-off between encoding density, scalability and decoding robustness in diverse physicochemical environments. Here, we report an encoding strategy that combines spatial patterning with rare-earth upconversion nanocrystals, single-wavelength near-infrared excitation and portable CCD (charge-coupled device)-based decoding to distinguish particles synthesized by means of flow lithography. This architecture exhibits large, exponentially scalable encoding capacities (>10(6) particles), an ultralow decoding false-alarm rate (<10(-9)), the ability to manipulate particles by applying magnetic fields, and pronounced insensitivity to both particle chemistry and harsh processing conditions. We demonstrate quantitative agreement between observed and predicted decoding for a range of practical applications with orthogonal requirements, including covert multiparticle barcoding of pharmaceutical packaging (refractive-index matching), multiplexed microRNA detection (biocompatibility) and embedded labelling of high-temperature-cast objects (temperature resistance).
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Affiliation(s)
- Jiseok Lee
- 1] Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2]
| | - Paul W Bisso
- 1] Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA [2] Massachusetts Institute of Technology Lincoln Laboratory, Lexington, Massachusetts 02420, USA [3]
| | - Rathi L Srinivas
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Jae Jung Kim
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Albert J Swiston
- Massachusetts Institute of Technology Lincoln Laboratory, Lexington, Massachusetts 02420, USA
| | - Patrick S Doyle
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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194
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Rödiger S, Liebsch C, Schmidt C, Lehmann W, Resch-Genger U, Schedler U, Schierack P. Nucleic acid detection based on the use of microbeads: a review. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1243-4] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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195
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Sun XT, Liu M, Xu ZR. Microfluidic fabrication of multifunctional particles and their analytical applications. Talanta 2014; 121:163-77. [DOI: 10.1016/j.talanta.2013.12.060] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 12/20/2013] [Accepted: 12/25/2013] [Indexed: 12/21/2022]
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196
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Eun Chung S, Kim J, Yoon Oh D, Song Y, Hoon Lee S, Min S, Kwon S. One-step pipetting and assembly of encoded chemical-laden microparticles for high-throughput multiplexed bioassays. Nat Commun 2014; 5:3468. [DOI: 10.1038/ncomms4468] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Accepted: 02/18/2014] [Indexed: 01/27/2023] Open
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197
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Luo W, Ma H, Mou F, Zhu M, Yan J, Guan J. Steric-repulsion-based magnetically responsive photonic crystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:1058-1064. [PMID: 24282106 DOI: 10.1002/adma.201304134] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 09/16/2013] [Indexed: 06/02/2023]
Abstract
The first steric-repulsion-based magnetically responsive photonic crystals (MRPCs) is constructed by synthesizing uniform superparamagnetic polyvinylpyrrolidone-coated Fe3 O4 colloidal nanocrystal clusters. The color tunable range of the MRPCs can not only cover almost the entire visible specztrum in solvents of diverse polarities, but also is insusceptible to ionic strength or pH values, facilitating the practical applications of MRPCs.
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Affiliation(s)
- Wei Luo
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
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198
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Liu W, Shang L, Zheng F, Lu J, Qian J, Zhao Y, Gu Z. Photonic crystal encoded microcarriers for biomaterial evaluation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:88-93. [PMID: 23861358 DOI: 10.1002/smll.201301253] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2013] [Revised: 06/18/2013] [Indexed: 05/10/2023]
Abstract
Photonic crystal encoded biomaterials microcarriers made from silica-hybrid photonic crystal beads are reported. The characteristic reflection peak originating from the physical periodic structure is used as the code of the microcarriers. They are stable during cell adhesion and culture on their surface. Based on this method, Different biomaterials are incorporated into different PCBs and used as encoded microcarriers for the multiplex evaluation of the interaction of cells and materials in a single culture experiment. These encoded microcarriers are ideal for multiplex bioevaluation of biomaterials or drug applications.
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Affiliation(s)
- Wei Liu
- Key Laboratory of Bioelectronics, Southeast University, Nanjing 210096, China
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199
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Roche J, Loget G, Zigah D, Fattah Z, Goudeau B, Arbault S, Bouffier L, Kuhn A. Straight-forward synthesis of ringed particles. Chem Sci 2014. [DOI: 10.1039/c3sc53329h] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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200
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Uchida Y, Iwai Y, Akita T, Mitome T, Suzuki K, Tamura R, Nishiyama N. Magnetically transportable core–shell emulsion droplets with an antioxidative all-organic paramagnetic liquid shell. J Mater Chem B 2014; 2:4130-4133. [DOI: 10.1039/c4tb00546e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nitroxide radical liquid microcapsules as an all-organic flexible antioxidative magnetic carrier for nanoliter cargoes have been successfully fabricated.
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Affiliation(s)
- Y. Uchida
- Graduate School of Engineering Science
- Osaka University
- Toyonaka, Japan
- Japan Science and Technology Agency
- Saitama 332-0012, Japan
| | - Y. Iwai
- Graduate School of Engineering Science
- Osaka University
- Toyonaka, Japan
| | - T. Akita
- Graduate School of Engineering Science
- Osaka University
- Toyonaka, Japan
| | - T. Mitome
- Graduate School of Engineering Science
- Osaka University
- Toyonaka, Japan
| | - K. Suzuki
- Graduate School of Environmental and Human Studies
- Kyoto University
- Kyoto 606-8501, Japan
| | - R. Tamura
- Graduate School of Environmental and Human Studies
- Kyoto University
- Kyoto 606-8501, Japan
| | - N. Nishiyama
- Graduate School of Engineering Science
- Osaka University
- Toyonaka, Japan
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