1
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Yao Y, Zhao YS, Guan L. Dimension Evolution of Self-Assembled Organic Microcrystal for Laser and Polarization-Rotation Function. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307661. [PMID: 38317524 DOI: 10.1002/smll.202307661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 01/22/2024] [Indexed: 02/07/2024]
Abstract
Multidimensional integrated micro/nanostructures are vitally important for the implementation of versatile photonic functionalities, whereas current material structures still suffer undesired surface defects and contaminations in either multistep micro/nanofabrications or extreme synthetic conditions. Herein, the dimension evolution of organic self-assembled structures 2D microrings and 3D microhelixes for multidimensional photonic devices is realized via a protic/aprotic solvent-directed molecular assembly method based on a multiaxial confined-assisted growth mechanism. The 2D microrings with consummate circle boundaries and molecular-smooth surfaces function as high-quality whispering-gallery-mode microcavities for dual-wavelength energy-influence-dependent switchable lasing. Moreover, the 3D microhelixes with smooth surfaces and natural twistable characteristics act as active photon-transport materials and polarization rotators. These results will broaden the horizon of constructing multidimensional microstructures for integrated photonic circuits.
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Affiliation(s)
- Yinan Yao
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350000, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yong Sheng Zhao
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese, Academy of Sciences, Beijing, 100190, China
| | - Lunhui Guan
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350000, China
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2
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Ranjan AD, Bhowmick S, Gupta A, Mallick AI, Banerjee A. Biologically Active Micropatterns of Biomolecules and Living Matter Using Microbubble Lithography. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2401127. [PMID: 38884187 DOI: 10.1002/smll.202401127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 05/17/2024] [Indexed: 06/18/2024]
Abstract
In situ patterning of biomolecules and living organisms while retaining their biological activity is extremely challenging, primarily because such patterning typically involves thermal stresses that could be substantially higher than the physiological thermal or stress tolerance level. Top-down patterning approaches are especially prone to these issues, while bottom-up approaches suffer from a lack of control in developing defined structures and the time required for patterning. A microbubble generated and manipulated by optical tweezers (microbubble lithography) is used to self-assemble and pattern living organisms in continuous microscopic structures in real-time, where the material thus patterned remains biologically active due to their ability to withstand elevated temperatures for short exposures. Successful patterns of microorganisms (Escherichia coli, Lactococcus. lactis and the Type A influenza virus) are demonstrated, as well as reporter proteins such as green fluorescent protein (GFP) on functionalized substrates with high signal-to-noise ratio and selectivity. Together, the data presented herein may open up fascinating possibilities in rapid in situ parallelized diagnostics of multiple pathogens and bioelectronics.
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Affiliation(s)
- Anand Dev Ranjan
- Department of Physical Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Sucharita Bhowmick
- Department of Biological Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Arnab Gupta
- Department of Biological Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Amirul Islam Mallick
- Department of Biological Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
| | - Ayan Banerjee
- Department of Physical Sciences, IISER Kolkata, Mohanpur, West Bengal, 741246, India
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3
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Ragisha CM, Habeeb NM, Grace VL, Varanakkottu SN. Moving Meniscus-Assisted Template-Free Optothermofluidic Nanoparticle Patterning and Its Application in Optothermoconvective Particle Trapping. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:12276-12287. [PMID: 38828930 DOI: 10.1021/acs.langmuir.4c01442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Moving meniscus-assisted vertical lifting is a commonly employed particle assembly technique to realize large-area particle patterning for the easy fabrication of colloidal photonic crystals and sensors. Though great success has been achieved for large-area patterning, inscribing desired patterns over the target substrate with precise control over the morphology remains a challenge. The target substrates need to be functionalized (physically or chemically) to realize desired patterns, which increases the complexity and limits their applicability to specific particle-liquid combinations. We demonstrate a new approach for the precise patterning of gold nanoparticles (Au NPs, diameter ∼60 nm) over solid substrates by the synergy of light-induced Marangoni flow and vertical lifting process (moving meniscus), without the requirement of photomasks or templates. The core idea relies on the particle accumulation due to light-induced Marangoni flow near the liquid meniscus in contact with a solid surface (due to plasmonic absorption of the particles) and the controlled lifting of the substrate. We present both the simulation and experimental results of the developed patterning technique. Various patterns such as continuous lines, intermittent lines with varying lengths, patterns with continuously varying widths, cross patterns, etc. are successfully inscribed. Dynamic control over the three-dimensional morphology of the deposited patterns is achieved by varying the lifting velocity, laser irradiation time, and lifting direction during the inscription process. Finally, we show the applicability of the developed plasmonically active surface for the large-area parallel manipulation of nonabsorbing microparticles based on optothermoconvective flow. The major advantage of the developed method compared to the existing light-controlled patterning techniques is its ability to inscribe patterns over large distances (up to several centimeters). We expect that the results presented in this paper will benefit different applications requiring precise particle patterning, such as optical elements, sensors, plasmonic substrates, microfluidic master templates, and electronic circuits.
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Affiliation(s)
- Chetteente Meethal Ragisha
- Optofluidics and Interface Science Laboratory, Department of Physics, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
| | - Nihal Muhammed Habeeb
- Optofluidics and Interface Science Laboratory, Department of Physics, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
| | - Vijayan Lija Grace
- Optofluidics and Interface Science Laboratory, Department of Physics, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
| | - Subramanyan Namboodiri Varanakkottu
- Optofluidics and Interface Science Laboratory, Department of Physics, National Institute of Technology Calicut, Kozhikode, Kerala 673601, India
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4
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Herber M, Jiménez Amaya A, Giese N, Bangalore Rajeeva B, Zheng Y, Hill EH. Bubble Printing of Layered Silicates: Surface Chemistry Effects and Picomolar Förster Resonance Energy Transfer Sensing. ACS APPLIED MATERIALS & INTERFACES 2023; 15:55022-55029. [PMID: 37967152 DOI: 10.1021/acsami.3c09760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
The assembly of nanoparticles on surfaces in defined patterns has long been achieved via template-assisted methods that involve long deposition and drying steps and the need for molds or masks to obtain the desired patterns. Control over deposition of materials on surfaces via laser-directed microbubbles is a nascent technique that holds promise for rapid fabrication of devices down to the micrometer scale. However, the influence of surface chemistry on the resulting assembly using such approaches has so far not been studied. Herein, the printing of layered silicate nanoclays using a laser-directed microbubble was established. Significant differences in the macroscale structure of the printed patterns were observed for hydrophilic, pristine layered silicates compared to hydrophobic, modified layered silicates, which provided the first example of how the surface chemistry of such nanoscale objects results in changes in assembly with this approach. Furthermore, the ability of layered silicates to adsorb molecules at the interface was retained, which allowed the fabrication of proof-of-concept sensors based on Förster resonance energy transfer (FRET) from quantum dots embedded in the assemblies to bound dye molecules. The detection limit for Rhodamine 800 sensing via FRET was found to be on the order of 10-12 M, suggesting signal enhancement due to favorable interactions between the dye and nanoclay. This work sets the stage for future advances in the control of hierarchical assembly of nanoparticles by modification of surface chemistry while also demonstrating a quick and versatile approach to achieve ultrasensitive molecular sensors.
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Affiliation(s)
- Marcel Herber
- Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
- The Hamburg Center for Ultrafast Imaging (CUI), Luruper Chausee 149, 22761 Hamburg, Germany
| | - Ana Jiménez Amaya
- Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
| | - Nicklas Giese
- Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
| | - Bharath Bangalore Rajeeva
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Yuebing Zheng
- Materials Science & Engineering Program and Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Eric H Hill
- Institute of Physical Chemistry, University of Hamburg, Grindelallee 117, 20146 Hamburg, Germany
- The Hamburg Center for Ultrafast Imaging (CUI), Luruper Chausee 149, 22761 Hamburg, Germany
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5
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Dey R, Kundu A, Das B, Banerjee A. Experimental verification of arcsine laws in mesoscopic nonequilibrium systems. Phys Rev E 2022; 106:054113. [PMID: 36559344 DOI: 10.1103/physreve.106.054113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 10/04/2022] [Indexed: 06/17/2023]
Abstract
A large number of processes in the mesoscopic world occur out of equilibrium, where the time evolution of a system becomes immensely important since it is driven principally by dissipative effects. Nonequilibrium steady states (NESS) represent a crucial category in such systems, where relaxation timescales are comparable to the operational timescales. In this study, we employ a model NESS stochastic system, which is comprised of a colloidal microparticle optically trapped in a viscous fluid, externally driven by a temporally correlated noise, and show that time-integrated observables such as the entropic current, the work done on the system or the work dissipated by it, follow the three Lévy arcsine laws [A. C. Barato et al., Phys. Rev. Lett. 121, 090601 (2018)0031-900710.1103/PhysRevLett.121.090601], in the large time limit. We discover that cumulative distributions converge faster to arcsine distributions when it is near equilibrium and the rate of entropy production is small, because in that case the entropic current has weaker temporal autocorrelation. We study this phenomenon by changing the strength of the added noise as well as by perturbing our system with a flow field produced by a microbubble at close proximity to the trapped particle. We confirm our experimental findings with theoretical simulations of the systems. Our work provides an interesting insight into the NESS statistics of the meso-regime, where stochastic fluctuations play a pivotal role.
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Affiliation(s)
- Raunak Dey
- Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, Mohanpur, West Bengal 741246, India and School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
| | - Avijit Kundu
- Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, Mohanpur, West Bengal 741246, India
| | - Biswajit Das
- Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, Mohanpur, West Bengal 741246, India
| | - Ayan Banerjee
- Department of Physical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur Campus, Mohanpur, West Bengal 741246, India
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6
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Wang X, Zhang C, Chen F, Xiang J, Wang S, Liu Z, Ding T. Optically Triggered Nanoscale Plasmonic Dynamite. ACS NANO 2022; 16:13667-13673. [PMID: 35920563 DOI: 10.1021/acsnano.2c02402] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photons as energy carriers are clean and abundant, which can be conveniently applied for nanoactuation but the response is usually slow with very low energy efficiency/density. Here, we underpin the concept of robust nanoscale plasmonic dynamite by incorporating fullerene (C60). The Au@C60 core-shell nanoparticles can be triggered to explode in nanoscale with synergy of plasmon-enhanced photochemical and photothermal effects. It is suggested that a sensible amount of CO2 was generated and pressurized in nanometric volume in an extremely short time scale (∼ns), which triggers the nanoexplosion, rendering the ejection of Au NPs at the speed over 300 m/s. The ejection generates extremely large local forces (∼1 μN) with thermomechanical energy efficiency up to ∼30%, which is demonstrated as a powerful nanoengine for controlled mobilization of micro-objects on solid surfaces. Such nanoscale plasmonic dynamite is highly exploitable for different types of nanomachines, which provides a powerful energy source for nanoactuation and nanomigration.
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Affiliation(s)
- Xujie Wang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Chi Zhang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Fangqi Chen
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Junxiang Xiang
- Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, China
| | - Shuangshuang Wang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
| | - Ze Liu
- Department of Engineering Mechanics, School of Civil Engineering, Wuhan University, Wuhan, Hubei 430072, China
- State Key Laboratory of Water Resources & Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
| | - Tao Ding
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan, 430072, China
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7
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Kollipara PS, Mahendra R, Li J, Zheng Y. Bubble-pen lithography: Fundamentals and applications: Nanoscience: Special Issue Dedicated to Professor Paul S. Weiss. AGGREGATE (HOBOKEN, N.J.) 2022; 3:e189. [PMID: 37441005 PMCID: PMC10338034 DOI: 10.1002/agt2.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/15/2023]
Abstract
Developing on-chip functional devices requires reliable fabrication methods with high resolution for miniaturization, desired components for enhanced performance, and high throughput for fast prototyping and mass production. Recently, laser-based bubble-pen lithography (BPL) has been developed to enable sub-micron linewidths, in situ synthesis of custom materials, and on-demand patterning for various functional components and devices. BPL exploits Marangoni convection induced by a laser-controlled microbubble to attract, accumulate, and immobilize particles, ions, and molecules onto different substrates. Recent years have witnessed tremendous progress in theory, engineering, and application of BPL, which motivated us to write this review. First, an overview of experimental demonstrations and theoretical understandings of BPL is presented. Next, we discuss the advantages of BPL and its diverse applications in quantum dot displays, biological and chemical sensing, clinical diagnosis, nanoalloy synthesis, and microrobotics. We conclude this review with our perspective on the challenges and future directions of BPL.
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Affiliation(s)
| | - Ritvik Mahendra
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas, USA
| | - Jingang Li
- Material Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas, USA
| | - Yuebing Zheng
- Walker Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas, USA
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Austin, Texas, USA
- Material Science and Engineering Program, Texas Materials Institute, The University of Texas at Austin, Austin, Texas, USA
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8
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Review of Bubble Applications in Microrobotics: Propulsion, Manipulation, and Assembly. MICROMACHINES 2022; 13:mi13071068. [PMID: 35888885 PMCID: PMC9324494 DOI: 10.3390/mi13071068] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/30/2022] [Accepted: 07/01/2022] [Indexed: 02/01/2023]
Abstract
In recent years, microbubbles have been widely used in the field of microrobots due to their unique properties. Microbubbles can be easily produced and used as power sources or tools of microrobots, and the bubbles can even serve as microrobots themselves. As a power source, bubbles can propel microrobots to swim in liquid under low-Reynolds-number conditions. As a manipulation tool, microbubbles can act as the micromanipulators of microrobots, allowing them to operate upon particles, cells, and organisms. As a microrobot, microbubbles can operate and assemble complex microparts in two- or three-dimensional spaces. This review provides a comprehensive overview of bubble applications in microrobotics including propulsion, micromanipulation, and microassembly. First, we introduce the diverse bubble generation and control methods. Then, we review and discuss how bubbles can play a role in microrobotics via three functions: propulsion, manipulation, and assembly. Finally, by highlighting the advantages and current challenges of this progress, we discuss the prospects of microbubbles in microrobotics.
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9
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Guo J, Wang Y, Zhang H, Zhao Y. Conductive Materials with Elaborate Micro/Nanostructures for Bioelectronics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2110024. [PMID: 35081264 DOI: 10.1002/adma.202110024] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/21/2022] [Indexed: 06/14/2023]
Abstract
Bioelectronics, an emerging field with the mutual penetration of biological systems and electronic sciences, allows the quantitative analysis of complicated biosignals together with the dynamic regulation of fateful biological functions. In this area, the development of conductive materials with elaborate micro/nanostructures has been of great significance to the improvement of high-performance bioelectronic devices. Thus, here, a comprehensive and up-to-date summary of relevant research studies on the fabrication and properties of conductive materials with micro/nanostructures and their promising applications and future opportunities in bioelectronic applications is presented. In addition, a critical analysis of the current opportunities and challenges regarding the future developments of conductive materials with elaborate micro/nanostructures for bioelectronic applications is also presented.
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Affiliation(s)
- Jiahui Guo
- Department of Rheumatology and Immunology, Institute of Translational Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yu Wang
- Department of Rheumatology and Immunology, Institute of Translational Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Hui Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
| | - Yuanjin Zhao
- Department of Rheumatology and Immunology, Institute of Translational Medicine, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang, 325001, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Science, Beijing, 100101, China
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10
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Jin HM, Lee SE, Kim S, Kim JY, Han Y, Kim BH. Directed high‐χ block copolymer
self‐assembly
by laser writing on silicon substrate. J Appl Polym Sci 2022. [DOI: 10.1002/app.52291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hyeong Min Jin
- Department of Organic Materials Engineering Chungnam National University Daejeon Republic of Korea
- Neutron Science Center Korea Atomic Energy Research Institute (KAERI) Daejeon Republic of Korea
| | - Su Eon Lee
- Department of Robotics and Mechatronics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea
| | - Simon Kim
- Department of Robotics and Mechatronics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea
| | - Ju Young Kim
- Reality Devices Research Division Electronics and Telecommunications Research Institute (ETRI) Daejeon Republic of Korea
| | - Young‐Soo Han
- Neutron Science Center Korea Atomic Energy Research Institute (KAERI) Daejeon Republic of Korea
| | - Bong Hoon Kim
- Department of Robotics and Mechatronics Engineering Daegu Gyeongbuk Institute of Science and Technology (DGIST) Daegu Republic of Korea
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11
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Liang S, Xia H. Programmable fabrication of a miniaturized photodetector with thermal stability via femtosecond laser direct writing. OPTICS LETTERS 2021; 46:6075-6078. [PMID: 34913928 DOI: 10.1364/ol.446556] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 11/11/2021] [Indexed: 06/14/2023]
Abstract
With the ever-increasing sophistication of integration of electronic devices, the problem of heat accumulation has become ever more serious. Here, a miniaturized photodetector with thermal stability was fabricated by combining the excellent characteristics of femtosecond laser direct writing (FsLDW) and silicon (Si). The sensing part of the photodetector is a Si microwire composed of Si nanoparticles and the sensing area is only 300 μm2. As a result, the photodetector can work stably at a temperature as high as 100°C and the response speed of the photodetector becomes notably faster at high temperatures. Furthermore, an image sensor was successfully fabricated by integrating 16 photodetectors and the image sensor can also work stably at high temperatures. This work demonstrates the potential for application of photodetectors based on Si microwires prepared by FsLDW under harsh conditions.
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12
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Sharma V, Tiwari S, Paul D, Sahu R, Chikkadi V, Kumar GVP. Optothermal pulling, trapping, and assembly of colloids using nanowire plasmons. SOFT MATTER 2021; 17:10903-10909. [PMID: 34807220 DOI: 10.1039/d1sm01365c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Optical excitation of colloids can be harnessed to realize soft matter systems that are out of equilibrium. In this paper, we present our experimental studies on the dynamics of silica colloids in the vicinity of a silver nanowire propagating surface plasmon polaritons (SPPs). Due to the optothermal interaction, the colloids are directionally pulled towards the excitation point of the nanowire. Having reached this point, they are spatio-temporally trapped around the excitation location. By increasing the concentration of colloids in the system, we observe multi-particle assembly around the nanowire. This process is thermophoretically driven and assisted by the SPPs. Furthermore, we find such an assembly to be sensitive to the excitation polarization at the input of the nanowire. Numerically-simulated temperature distribution around an illuminated nanowire corroborates sensitivity to the excitation polarization. Our study will find relevance in exploration of SPP-assisted optothermal pulling, trapping and assembly of colloids, and can serve as a test-bed of plasmon-driven active matter.
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Affiliation(s)
- Vandana Sharma
- Department of Physics, Indian Institute of Science Education and Research, Pune - 411008, India.
| | - Sunny Tiwari
- Department of Physics, Indian Institute of Science Education and Research, Pune - 411008, India.
| | - Diptabrata Paul
- Department of Physics, Indian Institute of Science Education and Research, Pune - 411008, India.
| | - Ratimanasee Sahu
- Department of Physics, Indian Institute of Science Education and Research, Pune - 411008, India.
| | - Vijayakumar Chikkadi
- Department of Physics, Indian Institute of Science Education and Research, Pune - 411008, India.
| | - G V Pavan Kumar
- Department of Physics, Indian Institute of Science Education and Research, Pune - 411008, India.
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13
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Zhang Q, Li R, Lee E, Luo T. Optically Driven Gold Nanoparticles Seed Surface Bubble Nucleation in Plasmonic Suspension. NANO LETTERS 2021; 21:5485-5492. [PMID: 33939430 DOI: 10.1021/acs.nanolett.0c04913] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Photothermal surface bubbles play important roles in applications like microfluidics and biosensing, but their formation on transparent substrates immersed in a plasmonic nanoparticle (NP) suspension has an unknown origin. Here, we reveal NPs deposited on the transparent substrate by optical forces are responsible for the nucleation of such photothermal surface bubbles. We show the surface bubble formation is always preceded by the optically driven NPs moving toward and deposited to the surface. Interestingly, such optically driven motion can happen both along and against the photon stream. The laser power density thresholds to form a surface bubble drastically differ depending on if the surface is forward- or backward-facing the light propagation direction. We attributed this to different optical power densities needed to enable optical pulling and pushing of NPs in the suspension, as optical pulling requires higher light intensity to excite supercavitation around NPs to enable proper optical configuration.
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Affiliation(s)
- Qiushi Zhang
- Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Ruiyang Li
- Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Eungkyu Lee
- Department of Electronic Engineering, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea
| | - Tengfei Luo
- Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Center for Sustainable Energy of Notre Dame (ND Energy), University of Notre Dame, Notre Dame, Indiana 46556, United States
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