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Recent advances in photonic crystal-based sensors. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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2
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Yeo HJ, Yoon SY, Jo DY, Kim HM, Kwak J, Kim SP, Kim MJ, Yang H. Effective Blue Light-Absorbing AuAg Nanoparticles in InP Quantum Dots-Based Color Conversion. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8455. [PMID: 36499950 PMCID: PMC9736556 DOI: 10.3390/ma15238455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/20/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
In typical color-by-blue mode-based quantum dot (QD) display devices, only part of the blue excitation light is absorbed by QD emitters, thus it is accompanied by the leakage of blue light through the devices. To address this issue, we offer, for the first time, the applicability of AuAg alloy nanoparticles (NPs) as effective blue light absorbers in InP QD-based color-by-blue platforms. For this, high-quality fluorescent green and red InP QDs with a double shell scheme of ZnSe/ZnS were synthesized and embedded in a transparent polymer film. Separately, a series of Au/Ag ratio-varied AuAg NPs with tunable plasmonic absorption peaks were synthesized. Among them, AuAg NPs possessing the most appropriate absorption peak with respect to spectral overlap with blue emission are chosen for the subsequent preparation of AuAg NP polymeric films with varied NP concentrations. A stack of AuAg NP polymeric film on top of InP QD film is then placed remotely on a blue light-emitting diode, successfully resulting in systematically progressive suppression of blue light leakage with increasing AuAg NP concentration. Furthermore, the beneficial function of the AuAg NP polymeric overlayer in mitigating undesirable QD excitation upon exposure to ambient lights was further examined.
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Affiliation(s)
- Hyo-Jin Yeo
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Republic of Korea
| | - Suk-Young Yoon
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Republic of Korea
| | - Dae-Yeon Jo
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Republic of Korea
| | - Hyun-Min Kim
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Republic of Korea
| | - Jeonghun Kwak
- Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung-Phil Kim
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Myung-Joon Kim
- Department of Big Data Application, Hannam University, Daejeon 34430, Republic of Korea
| | - Heesun Yang
- Department of Materials Science and Engineering, Hongik University, Seoul 04066, Republic of Korea
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Arruda LM, Moreira IP, Sanivada UK, Carvalho H, Fangueiro R. Development of Piezoresistive Sensors Based on Graphene Nanoplatelets Screen-Printed on Woven and Knitted Fabrics: Optimisation of Active Layer Formulation and Transversal/Longitudinal Textile Direction. MATERIALS 2022; 15:ma15155185. [PMID: 35897616 PMCID: PMC9369725 DOI: 10.3390/ma15155185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 12/05/2022]
Abstract
Although the force/pressure applied onto a textile substrate through a uniaxial compression is constant and independent of the yarn direction, it should be noted that such mechanical action causes a geometric change in the substrate, which can be identified by the reduction in its lateral thickness. Therefore, the objective of this study was to investigate the influence of the fabric orientation on both knitted and woven pressure sensors, in order to generate knowledge for a better design process during textile piezoresistive sensor development. For this purpose, these distinct textile structures were doped with different concentrations of graphene nanoplatelets (GNPs), using the screen-printing technique. The chemical and physical properties of these screen-printed fabrics were analysed using Field Emission Scanning Electron Microscopy, Ground State Diffuse Reflectance and Raman Spectroscopy. Samples were subjected to tests determining linear electrical surface resistance and piezoresistive behaviour. In the results, a higher presence of conductive material was found in woven structures. For the doped samples, the electrical resistance varied between 105 Ω and 101 Ω, for the GNPs’ percentage increase. The lowest resistance value was observed for the woven fabric with 15% GNPs (3.67 ± 8.17 × 101 Ω). The samples showed different electrical behaviour according to the fabric orientation. Overall, greater sensitivity in the longitudinal direction and a lower coefficient of variation CV% of the measurement was identified in the transversal direction, coursewise for knitted and weftwise for woven fabrics. The woven fabric doped with 5% GNPs assembled in the weftwise direction was shown to be the most indicated for a piezoresistive sensor, due to its most uniform response and most accurate measure of mechanical stress.
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Affiliation(s)
- Luisa M. Arruda
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal; (I.P.M.); (U.K.S.); (H.C.); (R.F.)
- Fibrenamics, Institute of Innovation on Fibre-Based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
- Correspondence:
| | - Inês P. Moreira
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal; (I.P.M.); (U.K.S.); (H.C.); (R.F.)
- Fibrenamics, Institute of Innovation on Fibre-Based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
| | - Usha Kiran Sanivada
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal; (I.P.M.); (U.K.S.); (H.C.); (R.F.)
- Fibrenamics, Institute of Innovation on Fibre-Based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
| | - Helder Carvalho
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal; (I.P.M.); (U.K.S.); (H.C.); (R.F.)
| | - Raul Fangueiro
- Centre for Textile Science and Technology (2C2T), University of Minho, 4800-058 Guimaraes, Portugal; (I.P.M.); (U.K.S.); (H.C.); (R.F.)
- Fibrenamics, Institute of Innovation on Fibre-Based Materials and Composites, University of Minho, 4800-058 Guimaraes, Portugal
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Ritchie AW, Cox HJ, Gonabadi HI, Bull SJ, Badyal JPS. Tunable High Refractive Index Polymer Hybrid and Polymer-Inorganic Nanocomposite Coatings. ACS APPLIED MATERIALS & INTERFACES 2021; 13:33477-33484. [PMID: 34254516 PMCID: PMC8397253 DOI: 10.1021/acsami.1c07372] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
Atomized spray plasma deposition (ASPD) provides a single-step, low-temperature, and dry approach for the preparation of high refractive index hybrid polymer or polymer-inorganic nanocomposite coatings. Refractive indices as high as 1.936 at 635 nm wavelength have been obtained for ASPD 4-bromostyrene/toluene-TiO2 nanocomposite layers containing low titania loadings. Thin films with any desired refractive index up to 1.936 can be easily deposited onto a variety of substrates by varying the precursor mixture composition. ASPD overcomes disadvantages commonly associated with alternative fabrication methods for depositing high refractive index coatings (elevated temperatures, wet processes, UV curing steps, and much greater inorganic loadings).
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Affiliation(s)
- Angus W. Ritchie
- Department
of Chemistry, Durham University, Durham DH1 3LE, England, U.K.
| | - Harrison J. Cox
- Department
of Chemistry, Durham University, Durham DH1 3LE, England, U.K.
| | - Hassan I. Gonabadi
- School
of Engineering, Newcastle University, Newcastle-upon-Tyne NE1
7RU, England, U.K.
| | - Steve J. Bull
- School
of Engineering, Newcastle University, Newcastle-upon-Tyne NE1
7RU, England, U.K.
| | - Jas Pal S. Badyal
- Department
of Chemistry, Durham University, Durham DH1 3LE, England, U.K.
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Schölch S, Schäfer JL, Meckel T, Brandstetter T, Biesalski M, Rühe J. Diazo-Based Copolymers for the Wet Strength Improvement of Paper Based on Thermally Induced CH-Insertion Cross-Linking. Biomacromolecules 2021; 22:2864-2873. [PMID: 34126012 DOI: 10.1021/acs.biomac.1c00249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We present an alternative to commonly used, but from an environmental point of view, problematic wet strength agents, which are usually added to paper to prevent a loss of mechanical stability and finally disintegrate when they get into contact with water. To this end, diazoester-containing copolymers are generated, which are coated onto paper and by heating to 110-160 °C for short periods of time become activated and form carbene intermediates, which undergo a CH-insertion cross-linking reaction. The process leads to a simultaneous cross-linking of the polymer and its attachment to the cellulose substrate. The immobilization process of copolymers consisting of a hydrophilic matrix based on N,N-dimethylacrylamide and a diazoester-based comonomer to a cellulose model surface and to laboratory-engineered, fibrous paper substrates is investigated as a function of time, temperature, and cross-linker composition. The distribution of the polymer in the fiber network is studied using confocal fluorescence microscopy. Finally, the tensile properties of modified wet and dry eucalyptus sulfate papers are measured to demonstrate the strong effect of the thermally cross-linked copolymers on the wet strength of paper substrates. Initial experiments show that the tensile indices of the modified and wetted paper samples are up to 50 times higher compared to the values measured for unmodified samples. When dry and wet papers coated with the above-described wetting agents are compared, relative wet strengths of over 30% are observed.
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Affiliation(s)
- Simon Schölch
- Department of Microsystems Engineering (IMTEK), Laboratory for Chemistry & Physics of Interfaces, Albert-Ludwigs-Universität Freiburg, Georges-Köhler-Allee 103, Freiburg 79110, Germany.,Freiburg Institute for Interactive Materials and Bioinspired Technologies (FIT), Albert-Ludwigs-Universität Freiburg, Georges-Köhler-Allee 105, Freiburg 79110, Germany
| | - Jan-Lukas Schäfer
- Makromolekulare Chemie und Papierchemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 8, Darmstadt 64287, Germany
| | - Tobias Meckel
- Makromolekulare Chemie und Papierchemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 8, Darmstadt 64287, Germany
| | - Thomas Brandstetter
- Department of Microsystems Engineering (IMTEK), Laboratory for Chemistry & Physics of Interfaces, Albert-Ludwigs-Universität Freiburg, Georges-Köhler-Allee 103, Freiburg 79110, Germany
| | - Markus Biesalski
- Makromolekulare Chemie und Papierchemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 8, Darmstadt 64287, Germany
| | - Jürgen Rühe
- Department of Microsystems Engineering (IMTEK), Laboratory for Chemistry & Physics of Interfaces, Albert-Ludwigs-Universität Freiburg, Georges-Köhler-Allee 103, Freiburg 79110, Germany.,Freiburg Institute for Interactive Materials and Bioinspired Technologies (FIT), Albert-Ludwigs-Universität Freiburg, Georges-Köhler-Allee 105, Freiburg 79110, Germany
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Syu C, Lin Y, Yeh Y, Don T. Preparation of transparent nanocomposites from UV‐ and thermo‐curable epoxyacrylate and graphene oxide for the application of corrosion protection coatings. POLYM INT 2019. [DOI: 10.1002/pi.5891] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Cian‐Fan Syu
- Department of Chemical and Materials EngineeringTamkang University New Taipei City Taiwan
| | - Yen‐Ting Lin
- Department of Chemical EngineeringNational Taiwan University Taipei Taiwan
| | - Yih‐Chang Yeh
- Department of Chemical and Materials EngineeringTamkang University New Taipei City Taiwan
| | - Trong‐Ming Don
- Department of Chemical and Materials EngineeringTamkang University New Taipei City Taiwan
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Magnesium hydroxide nanodispersion for polypropylene nanocomposites with high transparency and excellent fire-retardant properties. Polym Degrad Stab 2017. [DOI: 10.1016/j.polymdegradstab.2017.10.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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PDMAA Hydrogel Coated U-Bend Humidity Sensor Suited for Mass-Production. SENSORS 2017; 17:s17030517. [PMID: 28273849 PMCID: PMC5375803 DOI: 10.3390/s17030517] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 02/28/2017] [Accepted: 03/02/2017] [Indexed: 11/17/2022]
Abstract
We present a full-polymer respiratory monitoring device suited for application in environments with strong magnetic fields (e.g., during an MRI measurement). The sensor is based on the well-known evanescent field method and consists of a 1 mm plastic optical fiber with a bent region where the cladding is removed and the fiber is coated with poly-dimethylacrylamide (PDMAA). The combination of materials allows for a mass-production of the device by spray-coating and enables integration in disposable medical devices like oxygen masks, which we demonstrate here. We also present results of the application of an autocorrelation-based algorithm for respiratory frequency determination that is relevant for real applications of the device.
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Macdonald EK, Lacey JC, Ogura I, Shaver MP. Aromatic polyphosphonates as high refractive index polymers. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2016.12.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhang F, Ma J, Xu Q, Zhou J, Simion D, Carmen G, Wang J, Li Y. Hollow Casein-Based Polymeric Nanospheres for Opaque Coatings. ACS APPLIED MATERIALS & INTERFACES 2016; 8:11739-11748. [PMID: 27090208 DOI: 10.1021/acsami.6b00611] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Casein-based hollow polymeric sphere were fabricated through emulsifier-free polymerization coupled with alkali swelling approach. Hollow structure and nanoscale size of casein-based polymeric spheres were verified by TEM, AFM, SEM, and UV-vis spectra. The as-obtained hollow spheres were proved exhibiting superior opaque characteristic. Through adjusting the structural parameters, for example, MAA usages and MAA content in seed to core, sphere film showed tunable visible-light transmittance and antiultraviolet property. The formation mechanism of casein-based hollow sphere has been discussed in depth. Worth mentioning, the resultant hollow polymeric sphere can easily form films itself at room temperature, which would open a new possibility of designing opaque coatings in several fields, such as leather, packaging, paper making, biomedical, and special indoor coating applications.
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Affiliation(s)
- Fan Zhang
- College of Resource and Environment, Shaanxi University of Science and Technology , Xi'an 710021, Shaanxi Province PR China
| | - Jianzhong Ma
- College of Resource and Environment, Shaanxi University of Science and Technology , Xi'an 710021, Shaanxi Province PR China
- Shaanxi Research Institute of Agricultural Products Processing Technology , Xi'an 710021, Shaanxi Province PR China
| | - Qunna Xu
- College of Resource and Environment, Shaanxi University of Science and Technology , Xi'an 710021, Shaanxi Province PR China
- Shaanxi Research Institute of Agricultural Products Processing Technology , Xi'an 710021, Shaanxi Province PR China
| | - Jianhua Zhou
- College of Resource and Environment, Shaanxi University of Science and Technology , Xi'an 710021, Shaanxi Province PR China
- Shaanxi Research Institute of Agricultural Products Processing Technology , Xi'an 710021, Shaanxi Province PR China
| | - Demetra Simion
- R&D National institute for Textile and Leather-Division Leather and Footwear Research Institute , Bucharest 031215, Romania
| | - Gaidău Carmen
- R&D National institute for Textile and Leather-Division Leather and Footwear Research Institute , Bucharest 031215, Romania
| | - John Wang
- Department of Materials Science and Engineering, National University of Singapore , Singapore 117574, Singapore
| | - Yunqi Li
- Key Laboratory of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun, 130022, PR China
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11
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Zhang G, Chen M, Zhang J, He B, Yang H, Yang B. Effective increase in the refractive index of novel transparent silicone hybrid films by introduction of functionalized silicon nanoparticles. RSC Adv 2015. [DOI: 10.1039/c5ra09668e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The refractive index of novel transparent silicone hybrid films can be effectively enhanced by introduction of functionalized silicon nanoparticles via a facile strategy.
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Affiliation(s)
- Guoyan Zhang
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing 100871
- P. R. China
| | - Mei Chen
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing 100871
- P. R. China
| | - Jibin Zhang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
| | - Baofeng He
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing 100871
- P. R. China
| | - Huai Yang
- Department of Materials Science and Engineering
- College of Engineering
- Peking University
- Beijing 100871
- P. R. China
| | - Bai Yang
- State Key Laboratory of Supramolecular Structure and Materials
- College of Chemistry
- Jilin University
- Changchun
- P. R. China
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Affiliation(s)
- Emily K. Macdonald
- University of Edinburgh, School of Chemistry; Joseph Black Building; David Brewster Road Edinburgh UK
| | - Michael P. Shaver
- University of Edinburgh, School of Chemistry; Joseph Black Building; David Brewster Road Edinburgh UK
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DESIGN AND FABRICATION OF HIGH REFRACTIVE INDEX POLYMER-INORGANIC OPTICAL HYBIRD MATERIALS AND THEIR PRACTICAL APPLICATIONS. ACTA POLYM SIN 2013. [DOI: 10.3724/sp.j.1105.2013.12412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Ma C, Jiang Y, Yang X, Wang C, Li H, Dong F, Yang B, Yu K, Lin Q. Centrifugation-induced water-tunable photonic colloidal crystals with narrow diffraction bandwidth and highly sensitive detection of SCN-. ACS APPLIED MATERIALS & INTERFACES 2013; 5:1990-6. [PMID: 23448168 DOI: 10.1021/am302804b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Novel opal hydrogels with water-tunable photonic bandgap (PBG) exhibiting responses to external stimuli were self-assembled from polystyrene-co-poly(N,N-dimethylacrylamide) (PS-co-PDMAA) microspheres. The polymeric microspheres with narrow size distribution were successfully prepared in water, consisting of two regions. The inner region is rich in PS which is hard and hydrophobic; the outer region is rich in PDMAA which is soft and hydrophilic. The self-assembly of the PS-co-PDMAA hydrogel microspheres is ready induced by centrifugation and resulted in highly ordered three-dimensional (3D) photonic colloidal crystals (PCCs). With an increase of the amount of water, the PBG of the opal hydrogels shifted from the visible to near-infrared region of the electromagnetic spectrum. The maximum shift of diffraction peak positions could be larger than 500 nm with narrow full width at half maximum (FWHM) in the range of 20 to 40 nm only. The change in color was visible to the naked eye. The remarkable sensitivity to water of the lattice spacing of the opal hydrogels was repeatable after centrifugation. These observations are attributed to a reproducible degree of hydration of the hydrophilic outer region of the polymeric microspheres. Furthermore, the diffraction of the opal hydrogels was particularly sensitive to the presence of thiocyanate (SCN(-)) ions. The interaction between SCN(-) ions and DMAA repeat units is argued to block hydrogen bonds between DMAA and water molecules. Our PS-co-PDMAA opal hydrogels could be a practical system for diffraction-based detections.
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Affiliation(s)
- Cheng Ma
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, PR China
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Zhang G, Zhang J, Yang B. Fabrication of polymerizable ZnS nanoparticles in N,N′-dimethylacrylamide and the resulting high refractive index optical materials. Polym Chem 2013. [DOI: 10.1039/c3py00458a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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