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Latest Advances in Highly Efficient Dye-Based Photoinitiating Systems for Radical Polymerization. Polymers (Basel) 2023; 15:polym15051148. [PMID: 36904388 PMCID: PMC10007623 DOI: 10.3390/polym15051148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/18/2023] [Accepted: 02/21/2023] [Indexed: 03/03/2023] Open
Abstract
Light-activated polymerization is one of the most important and powerful strategies for fabrication of various types of advanced polymer materials. Because of many advantages, such as economy, efficiency, energy saving and being environmentally friendly, etc., photopolymerization is commonly used in different fields of science and technology. Generally, the initiation of polymerization reactions requires not only light energy but also the presence of a suitable photoinitiator (PI) in the photocurable composition. In recent years, dye-based photoinitiating systems have revolutionized and conquered the global market of innovative PIs. Since then, numerous photoinitiators for radical polymerization containing different organic dyes as light absorbers have been proposed. However, despite the large number of initiators designed, this topic is still relevant today. The interest towards dye-based photoinitiating systems continues to gain in importance, which is related to the need for new initiators capable of effectively initiating chain reactions under mild conditions. In this paper we present the most important information about photoinitiated radical polymerization. We describe the main directions for the application of this technique in various areas. Attention is mainly focused on the review of high-performance radical photoinitiators containing different sensitizers. Moreover, we present our latest achievements in the field of modern dye-based photoinitiating systems for the radical polymerization of acrylates.
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Setoura K, Ito S. Optical manipulation in conjunction with photochemical/photothermal responses of materials. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C: PHOTOCHEMISTRY REVIEWS 2022. [DOI: 10.1016/j.jphotochemrev.2022.100536] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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3
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Takao R, Ushiro K, Kusano H, Yuyama K, Shoji T, Linklater DP, Ivanova E, Juodkazis S, Tsuboi Y. Fluorescence Colour Control in Perylene‐Labeled Polymer Chains Trapped by Nanotextured Silicon. Angew Chem Int Ed Engl 2022; 61:e202117227. [DOI: 10.1002/anie.202117227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Indexed: 12/12/2022]
Affiliation(s)
- Ryota Takao
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
| | - Kenta Ushiro
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
| | - Hazuki Kusano
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
| | - Ken‐ichi Yuyama
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
| | - Tatsuya Shoji
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
- Department of Chemistry Kanagawa University 2946 Tsuchiya Hiratsuka 259-1293 Japan
| | - Denver P. Linklater
- College of STEM School of Science RMIT University Melbourne VIC 3000 Australia
| | - Elena Ivanova
- College of STEM School of Science RMIT University Melbourne VIC 3000 Australia
| | - Saulius Juodkazis
- Optical Sciences Center and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM) Swinburne University of Technology John Street Hawthorn VIC 3122 Australia
- World Research Hub Initiative (WRHI) School of Materials and Chemical Technology Tokyo Institute of Technology 2-12-1, Ookayama, Meguro-ku Tokyo 152-8550 Japan
| | - Yasuyuki Tsuboi
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
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4
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Takao R, Ushiro K, Kusano H, Yuyama K, Shoji T, Linklater DP, Ivanova E, Juodkazis S, Tsuboi Y. Fluorescence Colour Control in Perylene‐Labeled Polymer Chains Trapped by Nanotextured Silicon. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202117227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ryota Takao
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
| | - Kenta Ushiro
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
| | - Hazuki Kusano
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
| | - Ken‐ichi Yuyama
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
| | - Tatsuya Shoji
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
- Department of Chemistry Kanagawa University 2946 Tsuchiya Hiratsuka 259-1293 Japan
| | - Denver P. Linklater
- College of STEM School of Science RMIT University Melbourne VIC 3000 Australia
| | - Elena Ivanova
- College of STEM School of Science RMIT University Melbourne VIC 3000 Australia
| | - Saulius Juodkazis
- Optical Sciences Center and ARC Training Centre in Surface Engineering for Advanced Materials (SEAM) Swinburne University of Technology John Street Hawthorn VIC 3122 Australia
- World Research Hub Initiative (WRHI) School of Materials and Chemical Technology Tokyo Institute of Technology 2-12-1, Ookayama, Meguro-ku Tokyo 152-8550 Japan
| | - Yasuyuki Tsuboi
- Department of Chemistry Osaka City University 3-3-138 Sugimoto Sumiyoshi Osaka 558-8585 Japan
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Tang H, Kishi T, Yano T. In Situ Assembling of Glass Microspheres and Bonding Force Analysis by the Ultraviolet-Near-Infrared Dual-Beam Optical Tweezer System. ACS OMEGA 2021; 6:11869-11877. [PMID: 34056341 PMCID: PMC8154000 DOI: 10.1021/acsomega.1c00109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 04/15/2021] [Indexed: 06/12/2023]
Abstract
Microresonators show great potential as interlayer routing solutions for multilayered three-dimensional (3D) photonic communication networks. New techniques are needed for the convenient and in situ manipulation and immobilization of glass microspheres into functional structures. Herein, near-infrared (NIR) and ultraviolet (UV) lasers were used as optical tweezers to precisely arrange silica microspheres and UV-initiated immobilization in a 3D space. The NIR laser was used to trap targeted microspheres, and the UV laser was focused to immobilize the trapped microspheres in 3-methacryloxypropyltrimethoxysilane (MOPS) in ∼6 s. Optical force spectroscopy was performed using the optical tweezers to measure individual bond strength. Next, functional triangular pedestals were designed to flexibly control the gap space for vertical router applications in 3D photonic networks. Thus, the designed UV-NIR dual-beam optical tweezer system can be used to assemble arbitrary functional 3D structures, making it a valuable tool for microfabrication, photonics, and optical communication applications.
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Abstract
When an intense 1,064-nm continuous-wave laser is tightly focused at solution surfaces, it exerts an optical force on molecules, polymers, and nanoparticles (NPs). Initially, molecules and NPs are gathered into a single assembly inside the focus, and the laser is scattered and propagated through the assembly. The expanded laser further traps them at the edge of the assembly, producing a single assembly much larger than the focus along the surface. Amino acids and inorganic ionic compounds undergo crystallization and crystal growth, polystyrene NPs form periodic arrays and disklike structures with concentric circles or hexagonal packing, and Au NPs demonstrate assembling and swarming, in which the NPs fluctuate like a group of bees. These phenomena that depend on laser polarization are called optically evolved assembling at solution surfaces, and their dynamics and mechanisms are elucidated in this review. As a promising application in materials science, the optical trapping assembly of lead halide perovskites, supramolecules, and aggregation-induced emission enhancement-active molecules is demonstrated and future directions for fundamental study are discussed.
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Affiliation(s)
- Hiroshi Masuhara
- Department of Applied Chemistry and Center for Emergent Functional Matter Science, National Chiao Tung University, Hsinchu 30010, Taiwan;
| | - Ken-Ichi Yuyama
- Department of Chemistry, Osaka City University, Osaka 558-8585, Japan;
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7
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Jui-Kai Chen J, Chiang WY, Kudo T, Usman A, Masuhara H. Nanoparticle Assembling Dynamics Induced by Pulsed Optical Force. CHEM REC 2021; 21:1473-1488. [PMID: 33661570 DOI: 10.1002/tcr.202100005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/23/2021] [Accepted: 02/24/2021] [Indexed: 11/06/2022]
Abstract
Femtosecond (fs) laser trapping dynamics is summarized for silica, hydrophobically modified silica, and polystyrene nanoparticles (NPs) in aqueous solution, highlighting their distinct optical trapping dynamics under CW laser. Mutually repulsive silica nanoparticles are tightly confined under fs laser compared to CW laser trapping and, upon increasing laser power, they are ejected from the focus as an assembly. Hydrophobically modified silica and polystyrene (PS) NPs are sequentially ejected just like a stream or ablated, giving bubbles. The ejection and bubbling take place with the direction perpendicular to laser polarization and its direction is randomly switched from one to the other. These characteristic features are interpreted from the viewpoint of single assembly formation of NPs at an asymmetric position in the optical potential. Temporal change in optical forces map is prepared for a single PS NP by calculating scattering, gradient, and temporal forces. The relative contribution of the forces changes with the volume increase of the assembly and, when the pushing force along the trapping pulse propagation overcome the gradient in the focal plane, the assembly undergoes the ejection. Further fs multiphoton absorption is induced for the larger assembly leading to bubble generation. The assembling, ejection, and bubbling dynamics of NPs are characteristic features of pulsed optical force and are considered as a new platform for developing new material fabrication method.
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Affiliation(s)
- Jim Jui-Kai Chen
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Rd., Hsinchu, 30010, Taiwan
| | - Wei-Yi Chiang
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Rd., Hsinchu, 30010, Taiwan.,Department of Chemistry, Rice University, 6100 Main St., Space Science and Technology Building, Houston, TX 77005, USA
| | - Tetsuhiro Kudo
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Rd., Hsinchu, 30010, Taiwan
| | - Anwar Usman
- Department of Chemistry, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE1410, Negara Brunei Darussalam
| | - Hiroshi Masuhara
- Department of Applied Chemistry, National Chiao Tung University, 1001, Ta Hsueh Rd., Hsinchu, 30010, Taiwan.,Center for Emergent Functional Matter Science, National Chiao Tung University, 1001 Ta Hsueh Rd., Hsinchu, 30010, Taiwan
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A universal method for depositing patterned materials in situ. Nat Commun 2020; 11:5334. [PMID: 33087744 PMCID: PMC7578796 DOI: 10.1038/s41467-020-19210-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 09/29/2020] [Indexed: 11/08/2022] Open
Abstract
Current techniques of patterned material deposition require separate steps for patterning and material deposition. The complexity and harsh working conditions post serious limitations for fabrication. Here, we introduce a single-step and easy-to-adapt method that can deposit materials in-situ. Its methodology is based on the semiconductor nanoparticle assisted photon-induced chemical reduction and optical trapping. This universal mechanism can be used for depositing a large selection of materials including metals, insulators and magnets, with quality on par with current technologies. Patterning with several materials together with optical-diffraction-limited resolution and accuracy can be achieved from macroscopic to microscopic scale. Furthermore, the setup is naturally compatible with optical microscopy based measurements, thus sample characterisation and material deposition can be realised in-situ. Various devices fabricated with this method in 2D or 3D show it is ready for deployment in practical applications. This method will provide a distinct tool in material technology.
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9
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Xu Y, Zhou J, Smith TA. Time-resolved emission microscopy of light-induced aggregation of luminescent polymers. Methods Appl Fluoresc 2019; 8:014006. [PMID: 31747653 DOI: 10.1088/2050-6120/ab5976] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Photon pressure has been used to induce the aggregation from solution of a series of photoluminescent conjugated polyelectrolytes containing tetraphenylethene units. These polymers show steady-state and time-resolved emission properties that are dependent on the local chromophore environment that can be influenced by the degree of intra- and inter-molecular interactions, which enables the photoaggregation process to be monitored by time-resolved fluorescence imaging techniques. Structural differences in the polymer lead to variations in the photo-induced aggregation behaviour.
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Affiliation(s)
- Yang Xu
- ARC Centre of Excellence in Exciton Science, School of Chemistry, University of Melbourne, 3010 Victoria, Australia
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10
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Yuyama KI, Islam MJ, Takahashi K, Nakamura T, Biju V. Crystallization of Methylammonium Lead Halide Perovskites by Optical Trapping. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806079] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ken-ichi Yuyama
- Research Institute for Electronic Science and Graduate School of Environmental Science; Hokkaido University; N20, W10 Sapporo Hokkaido 001-0020 Japan
| | - Md Jahidul Islam
- Research Institute for Electronic Science and Graduate School of Environmental Science; Hokkaido University; N20, W10 Sapporo Hokkaido 001-0020 Japan
| | - Kiyonori Takahashi
- Research Institute for Electronic Science and Graduate School of Environmental Science; Hokkaido University; N20, W10 Sapporo Hokkaido 001-0020 Japan
| | - Takayoshi Nakamura
- Research Institute for Electronic Science and Graduate School of Environmental Science; Hokkaido University; N20, W10 Sapporo Hokkaido 001-0020 Japan
| | - Vasudevanpillai Biju
- Research Institute for Electronic Science and Graduate School of Environmental Science; Hokkaido University; N20, W10 Sapporo Hokkaido 001-0020 Japan
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11
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Crystallization of Methylammonium Lead Halide Perovskites by Optical Trapping. Angew Chem Int Ed Engl 2018; 57:13424-13428. [DOI: 10.1002/anie.201806079] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 07/08/2018] [Indexed: 11/07/2022]
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12
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Kwak R, Park HH, Ko H, Seong M, Kwak MK, Jeong HE. Partially Cured Photopolymer with Gradient Bingham Plastic Behaviors as a Versatile Deformable Material. ACS Macro Lett 2017; 6:561-565. [PMID: 35610879 DOI: 10.1021/acsmacrolett.7b00233] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We present rheological and mechanical behaviors of a partially cured photopolymer. When an ultraviolet (UV)-curable resin is exposed to UV light in atmospheric conditions, a partially cured layer is formed on the top of the resin owing to inhibitory effects of oxygen. Interestingly, such a partially cured resin behaves like a Bingham plastic with a yield stress, being a rigid solid at low shear stress and a viscous liquid at high stress. Unlike typical Bingham plastic materials, however, deformation rate saturation is observed with an increase in applied stress, which is attributed to the gradient in the degree of photopolymerization of the resin (termed "gradient Bingham plastic"). This gradient Bingham plastic can be utilized for the robust fabrication of diverse 3D, multiscale structures.
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Affiliation(s)
- Rhokyun Kwak
- Center
for BioMicrosystems, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Hyun-Ha Park
- Department
of Mechanical Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Hangil Ko
- Department
of Mechanical Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Minho Seong
- Department
of Mechanical Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Moon Kyu Kwak
- Department
of Mechanical Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Hoon Eui Jeong
- Department
of Mechanical Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
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Miniewicz A, Bartkiewicz S, Orlikowska H, Dradrach K. Marangoni effect visualized in two-dimensions Optical tweezers for gas bubbles. Sci Rep 2016; 6:34787. [PMID: 27713512 PMCID: PMC5054428 DOI: 10.1038/srep34787] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 09/19/2016] [Indexed: 12/19/2022] Open
Abstract
In the report we demonstrate how, using laser light, effectively trap gas bubbles and transport them through a liquid phase to a desired destination by shifting the laser beam position. The physics underlying the effect is complex but quite general as it comes from the limited to two-dimension, well-known, Marangoni effect. The experimental microscope-based system consists of a thin layer of liquid placed between two glass plates containing a dye dissolved in a solvent and a laser light beam that is strongly absorbed by the dye. This point-like heat source locally changes surface tension of nearby liquid-air interface. Because of temperature gradients a photo-triggered Marangoni flows are induced leading to self-amplification of the effect and formation of large-scale whirls. The interface is bending toward beam position allowing formation of a gas bubble upon suitable beam steering. Using various techniques (employing luminescent particles or liquid crystals), we visualize liquid flows propelled by the tangential to interface forces. This helped us to understand the physics of the phenomenon and analyze accompanying effects leading to gas bubble trapping. The manipulation of sessile droplets moving on the glass surface induced via controlled with laser light interface bending (i.e. "droplet catapult") is demonstrated as well.
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Affiliation(s)
- A Miniewicz
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - S Bartkiewicz
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - H Orlikowska
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
| | - K Dradrach
- Advanced Materials Engineering and Modelling Group, Faculty of Chemistry, Wroclaw University of Science and Technology, 50-370 Wroclaw, Poland
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Lu W, Chen H, Liu S, Zi J, Lin Z. Extremely strong bipolar optical interactions in paired graphene nanoribbons. Phys Chem Chem Phys 2016; 18:8561-9. [DOI: 10.1039/c5cp06581j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Extremely strong bipolar optical forces are demonstrated in a pair of coupled graphene nanoribbons, due to the remarkable confinement and enhancement of optical fields, and analytical formulae are derived.
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Affiliation(s)
- Wanli Lu
- Department of Physics
- China University of Mining and Technology
- Xuzhou
- China
| | - Huajin Chen
- State Key Laboratory of Surface Physics and Department of Physics
- Fudan University
- Shanghai 200433
- China
- Key Laboratory of Micro and Nano Photonic Structures
| | - Shiyang Liu
- State Key Laboratory of Surface Physics and Department of Physics
- Fudan University
- Shanghai 200433
- China
- Institute of Information Optics
| | - Jian Zi
- State Key Laboratory of Surface Physics and Department of Physics
- Fudan University
- Shanghai 200433
- China
- Key Laboratory of Micro and Nano Photonic Structures
| | - Zhifang Lin
- State Key Laboratory of Surface Physics and Department of Physics
- Fudan University
- Shanghai 200433
- China
- Key Laboratory of Micro and Nano Photonic Structures
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Yoshikawa H, Imura S, Tamiya E. A new methodology for optical biosensing with drop-casting fabrication of sensor chips and irradiation/detection of a single laser beam. RSC Adv 2015. [DOI: 10.1039/c5ra03754a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The mechanism of glucose sensing based on the laser-induced morphology change.
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Affiliation(s)
- H. Yoshikawa
- Department of Applied Physics
- Osaka University
- Osaka 565-0871
- Japan
| | - S. Imura
- Department of Applied Physics
- Osaka University
- Osaka 565-0871
- Japan
| | - E. Tamiya
- Department of Applied Physics
- Osaka University
- Osaka 565-0871
- Japan
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Bartkiewicz S, Miniewicz A. Whirl-enhanced continuous wave laser trapping of particles. Phys Chem Chem Phys 2014; 17:1077-83. [PMID: 25412568 DOI: 10.1039/c4cp04008b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tightly focused laser beams can trap micro- and nanoparticles suspended in liquids in their focal spots enabling different functionalities including 3D manipulations and assembling. Here, we report on remarkably strong liquid-liquid phase separation and crystallization experiments in para-nitroaniline dissolved in 1,4-dioxane. For optical trapping of para-nitroaniline we used low-power, weakly focused light beam from continuous-wave laser partially absorbed by the solute. The experiments were performed in solution deposited on glass with an upper free-surface and solution contained between two glass plates. The usual gradient force field and scattering force solely are insufficient to properly describe the observed particle gathering effects extending far beyond the optical trap potential. The concept of whirl-enhanced and temperature assisted optical trapping is postulated. The relative simplicity of the used geometry for trapping will broaden the understanding of the light-matter interaction and promises the widespread application of the observed effect in optically controlled crystallization.
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Affiliation(s)
- S Bartkiewicz
- Institute of Physical and Theoretical Chemistry, Department of Chemistry, Wroclaw University of Technology, Wybrzeze Wyspianskiego 27, 50-370 Wroclaw, Poland.
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17
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Ito S, Yamauchi H, Tamura M, Hidaka S, Hattori H, Hamada T, Nishida K, Tokonami S, Itoh T, Miyasaka H, Iida T. Selective optical assembly of highly uniform nanoparticles by doughnut-shaped beams. Sci Rep 2013; 3:3047. [PMID: 24157739 PMCID: PMC6505715 DOI: 10.1038/srep03047] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 10/08/2013] [Indexed: 11/09/2022] Open
Abstract
A highly efficient natural light-harvesting antenna has a ring-like structure consisting of dye molecules whose absorption band changes through selective evolutionary processes driven by external stimuli, i.e., sunlight depending on its territory and thermal fluctuations. Inspired by this fact, here, we experimentally and theoretically demonstrate the selective assembling of ring-like arrangements of many silver nanorods with particular shapes and orientations onto a substrate by the light-induced force of doughnut beams with different colours (wavelengths) and polarizations in conjunction with thermal fluctuations at room temperature. Furthermore, the majority of nanorods are electromagnetically coupled to form a prominent red-shifted collective mode of localized surface plasmons resonant with the wavelength of the irradiated light, where a spectral broadening also appears for the efficient broadband optical response. The discovered principle is a promising route for "bio-inspired selective optical assembly" of various nanomaterials that can be used in the wide field of nanotechnology.
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Affiliation(s)
- Syoji Ito
- 1] Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan [2] Center for Quantum Materials Science under Extreme Conditions, Osaka University, Toyonaka, Osaka 560-8531, Japan [3] PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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18
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Yuyama KI, Sugiyama T, Masuhara H. Laser Trapping and Crystallization Dynamics of l-Phenylalanine at Solution Surface. J Phys Chem Lett 2013; 4:2436-2440. [PMID: 26704424 DOI: 10.1021/jz401122v] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present laser trapping behavior of l-phenylalanine (l-Phe) at a surface of its unsaturated aqueous solution by a focused continuous-wave (CW) near-infrared (NIR) laser beam. Upon the irradiation into the solution surface, laser trapping of the liquid-like clusters is induced concurrently with local laser heating, forming an anhydrous plate-like crystal at the focal spot. The following laser irradiation into a central part of the plate-like crystal leads to laser trapping at the crystal surface not only for l-Phe molecules/clusters but also for polystyrene (PS) particles. The particles are closely packed at crystal edges despite that the crystal surface is not illuminated by the laser directly. The molecules/clusters are also gathered and adsorbed to the crystal surface, leading to crystal growth. The trapping dynamics and mechanism are discussed in view of optical potential formed at the crystal surface by light propagation inside the crystal.
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Affiliation(s)
- Ken-Ichi Yuyama
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University , Hsinchu 30010, Taiwan
| | - Teruki Sugiyama
- Instrument Technology Research Center, National Applied Research Laboratories , Hsinchu 30076, Taiwan
| | - Hiroshi Masuhara
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University , Hsinchu 30010, Taiwan
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19
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Usman A, Chiang WY, Uwada T, Masuhara H. Polarization and droplet size effects in the laser-trapping-induced reconfiguration in individual nematic liquid crystal microdroplets. J Phys Chem B 2013; 117:4536-40. [PMID: 23259728 DOI: 10.1021/jp308596h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We experimentally demonstrate reordering throughout the inside of an individual bipolar nematic liquid-crystalline microdroplet optically trapped by a highly focused laser beam, when the laser powers are above a definite threshold. The threshold depends on the droplet size and laser polarization. A physical interpretation of the results is presented by considering the nonlocal orientations of the nematic liquid-crystal molecules in the droplets with the dimensions on the order of the focal spot diameter or larger. On the basis of the finite size approximation, we show that the dependence of threshold power on the droplet size is calculated to be in qualitative agreement with the experimental data.
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Affiliation(s)
- Anwar Usman
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan.
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20
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Kudo T, Ishihara H. Resonance optical manipulation of nano-objects based on nonlinear optical response. Phys Chem Chem Phys 2013; 15:14595-610. [DOI: 10.1039/c3cp51969d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Optical trapping with continuous-wave lasers has been a fascinating field in the optical manipulation. It has become a powerful tool for manipulating micrometer-sized objects, and has been widely applied in physics, chemistry, biology, material, and colloidal science. Replacing the continuous-wave- with pulsed-mode laser in optical trapping has already revealed some novel phenomena, including the stable trap, modifiable trapping positions, and controllable directional optical ejections of particles in nanometer scales. Due to two distinctive features; impulsive peak powers and relaxation time between consecutive pulses, the optical trapping with the laser pulses has been demonstrated to have some advantages over conventional continuous-wave lasers, particularly when the particles are within Rayleigh approximation. This would open unprecedented opportunities in both fundamental science and application. This Review summarizes recent advances in the optical trapping with laser pulses and discusses the electromagnetic formulations and physical interpretations of the new phenomena. Its aim is rather to show how beautiful and promising this field will be, and to encourage the in-depth study of this field.
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Affiliation(s)
- Anwar Usman
- Tohoku University (Japan), Universiti Sains Malaysia, Max-Born-Insitut für Kurzzeitspektroskopie im Forschungsverbund Berlin, Osaka University, and Έcole Normale Supérieure de Chimie Paris
| | - Wei-Yi Chiang
- Department of Applied Chemistry, National Chiao Tung University
| | - Hiroshi Masuhara
- Tohoku University (1966), Osaka University (1971). Osaka University, Department of Applied Chemistry and Institute of Molecular Science of the National Chiao Tung University in Taiwan
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Sugiyama T, Yuyama KI, Masuhara H. Laser trapping chemistry: from polymer assembly to amino acid crystallization. Acc Chem Res 2012; 45:1946-54. [PMID: 23094993 DOI: 10.1021/ar300161g] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Laser trapping has served as a useful tool in physics and biology, but, before our work, chemists had not paid much attention to this technique because molecules are too small to be trapped in solution at room temperature. In late 1980s, we demonstrated laser trapping of micrometer-sized particles, developed various methodologies for their manipulation, ablation, and patterning in solution, and elucidated their dynamics and mechanism. In the 1990s, we started laser trapping studies on polymers, micelles, dendrimers, and gold, as well as polymer nanoparticles. Many groups also reported laser trapping studies of nanoclusters, DNA, colloidal suspensions, etc. Following these research streams, we have explored new molecular phenomena induced by laser trapping. Gradient force leading to trapping, mass transfer by local heating, and molecular reorientation following laser polarization are intimately coupled with molecular cluster and aggregate formation due to their intermolecular interactions, which depend on whether the trapping position is at the interface/surface or in solution. In this Account, we summarize our systematic studies on laser trapping chemistry and present some new advances and our future perspectives. We describe the laser trapping of nanoparticles, polymers, and amino acid clusters in solution by focusing a continuous wave 1064 nm laser beam on the molecules of interest and consider their dynamics and mechanism. In dilute solution, nanoparticles with weak mutual interactions are individually trapped at the focal point, while laser trapping of nanoparticles in concentrated solution assembles and confines numerous particles at the focal spot. The assembly of polymers during their laser trapping extends out from the focal point because of the interpolymer interactions, heat transfer, and solvent flow. When the trapping laser is focused at an interface between a thin heavy water solution film of glycine and a glass substrate, the assembled molecules nucleate and evolve to a liquid-liquid phase separation, or they will crystallize if the trapping laser is focused on the solution surface. Laser trapping can induce spatiotemporally the liquid and solid nucleation of glycine, and the dense liquid droplet or crystal formed can grow to a bulk scale. We can control the polymorph of the formed glycine crystal selectively by tuning trapping laser polarization and power. These results provide a new approach to elucidate dynamics and mechanism of crystallization and are the fundamental basis for studying not only enantioselective crystallization but also confined polymerization, trapping dynamics by ultrashort laser pulses, and resonance effect in laser trapping.
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Affiliation(s)
- Teruki Sugiyama
- Instrument Technology Research Center, National Applied Research Laboratories, Hsinchu 30076, Taiwan
| | - Ken-ichi Yuyama
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - Hiroshi Masuhara
- Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsinchu 30010, Taiwan
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23
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Kudo T, Ishihara H. Proposed nonlinear resonance laser technique for manipulating nanoparticles. PHYSICAL REVIEW LETTERS 2012; 109:087402. [PMID: 23002774 DOI: 10.1103/physrevlett.109.087402] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 12/28/2011] [Indexed: 06/01/2023]
Abstract
We propose nonlinear resonant laser manipulation, a technique that drastically enhances the number of degrees of freedom when manipulating nano-objects. Considering the high laser intensity required to trap single molecules, we calculate the radiation force exerted on a molecule in a focused laser beam by solving the density matrix equations using the nonperturbative method. The results coherently elucidate certain recently reported puzzling phenomena that contradict the conventional understanding of laser trapping. Further, we demonstrate unconventional forms of laser manipulations using "stimulated recoil force" and "subwavelength laser manipulation."
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Affiliation(s)
- Tetsuhiro Kudo
- Department of Physics and Electronics, Osaka Prefecture University, Sakai, Osaka, Japan.
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