1
|
Fan L, Tang X, Zhang S, Wu L, Zhao T, Ding X, Wu H, Yao J. Structural and chemical study of complex silver patterns additively manufactured by multi-photon reduction. NANOTECHNOLOGY 2024; 35:365301. [PMID: 38749414 DOI: 10.1088/1361-6528/ad4bee] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 05/15/2024] [Indexed: 06/22/2024]
Abstract
Multi-photon reduction (MPR) based on femtosecond laser makes rapid prototyping and molding in micro-nano scale feasible, but is limited in material selectivity due to lack of the understanding of the reaction mechanism in MPR process. In this paper, additively manufacturing of complex silver-based patterns through MPR is demonstrated. The effects of laser parameters, including laser pulse energies and scanning speeds, on the structural and chemical characteristics of the printed structures are systematically investigated. The results show that the geometric size of printed cubes deviates from the designed size further by increasing laser pulse energy or decreasing scanning speed. The reaction mechanism of MPR is revealed by studying the elemental composition and chemical structures of printed cubes. The evolution of Raman spectra upon the laser processing parameters suggests that the MPR process mainly includes two processes: reduction and decomposition. In the MPR process, silver ions are reduced and grow into particles by accepting the electrons from ethonal molecules; meanwhile carboxyl groups in polyvinylpyrrolidone are decomposed and form amorphous carbon that is attached on the surface of silver particles. The conductivity of silver wires fabricated by MPR reaches 2 × 105S m-1and stays relatively constant as varying their cross section area, suggesting excellent electrical conduction. The understanding of the MPR process would accelerate the development of MPR technology and the implementation of MPR in micro-electromechanical systems could therefore be envisioned.
Collapse
Affiliation(s)
- Lisha Fan
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Collaborative Innovation Center of High-end Laser Manufacturing Equipment, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
| | - Xianwei Tang
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Collaborative Innovation Center of High-end Laser Manufacturing Equipment, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
| | - Shuowen Zhang
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Collaborative Innovation Center of High-end Laser Manufacturing Equipment, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
| | - Ling Wu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Collaborative Innovation Center of High-end Laser Manufacturing Equipment, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
| | - Tianzhen Zhao
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Collaborative Innovation Center of High-end Laser Manufacturing Equipment, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
| | - Xiaoyu Ding
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Collaborative Innovation Center of High-end Laser Manufacturing Equipment, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
| | - Huaping Wu
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
| | - Jianhua Yao
- College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
- Collaborative Innovation Center of High-end Laser Manufacturing Equipment, Zhejiang University of Technology, Hangzhou 310023, People's Republic of China
| |
Collapse
|
2
|
Tiwari A, Lee SJ, Garg DK, Shin S, Thokchom AK. Characterizing the Microparticles Deposition Structure and its Photonic Nature in Surfactant-Laden Evaporating Colloidal Sessile Droplets. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8711-8720. [PMID: 38608175 DOI: 10.1021/acs.langmuir.4c00596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Abstract
This work presents a simple method to create photonic microstructures via the natural evaporation of surfactant-laden colloidal sessile droplets on a flat substrate. In the absence of dissolved surfactant, the evaporating colloidal droplet forms a well-known coffee ring deposition. In contrast, the presence of surfactant leads to the formation of multiple ring structures due to the repetitive pinning-depinning behavior of the droplet contact line (CL). It is found that the multiring structure shows vibrant iridescent structural colors while the coffee ring lacks a photonic nature. This difference in the structural color for the presence and absence of the surfactant is found to be dependent on the arrangement of the particles in the deposition structure. The particle arrangement in the multirings is monolayered and well-ordered. The ordering of the particles is strongly influenced by the particle dynamics, contact angle (CA), and CL dynamics of the evaporating colloidal solution droplet. Furthermore, the iridescent nature of the multiring deposition is demonstrated and explained. The dependence of the multiring deposition structure on the concentration of the dissolved surfactant and the suspended particles is also studied. The findings demonstrate that an intermediate surfactant concentration is desirable for the formation of a multiring structure. Further, the pinning-depinning CL dynamics that causes the formation of the multiring deposition structure is discussed. Finally, we demonstrate the applicability of the approach to smaller droplet volumes.
Collapse
Affiliation(s)
- Appurva Tiwari
- Soft Matter Lab, Department of Chemical Engineering, Shiv Nadar Institution of Eminence Deemed to be University, Greater Noida 201314, India
| | - Seong Jae Lee
- Department of Polymer Engineering, The University of Suwon, Hwaseong, Gyeonggi 18323, South Korea
| | - Dhiraj Kumar Garg
- Intencity Lab, Department of Chemical Engineering, Shiv Nadar Institution of Eminence Deemed to be University, Greater Noida 201314, India
| | - Sehyun Shin
- Department of Mechanical Engineering, Korea University, Anam Dong, Seoul 02841, South Korea
| | - Ashish Kumar Thokchom
- Soft Matter Lab, Department of Chemical Engineering, Shiv Nadar Institution of Eminence Deemed to be University, Greater Noida 201314, India
| |
Collapse
|
3
|
Chen S, Li Q, Tian D, Ke P, Yang X, Wu Q, Chen J, Hu C, Ji H. Assembly of long silver nanowires into highly aligned structure to achieve uniform "Hot Spots" for Surface-enhanced Raman scattering detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2022; 273:121030. [PMID: 35189488 DOI: 10.1016/j.saa.2022.121030] [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: 10/24/2021] [Revised: 02/08/2022] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
Silver nanowires (AgNWs) as a promising surface-enhanced Raman spectroscopy (SERS) substrate could be used in the analytical science due to its high sensitivity. However, it is difficult for the randomly-distributed silver nanowires to offer uniform "hot spots" to achieve the SERS signal reproducibility of small molecules detection. Herein, the evaporation-induced aggregation had been used to assemble long silver nanowires into highly aligned structure to achieve uniform "hot spots" for SERS detection. The normal glass slide with well-aligned silver nanowires could act as a high sensitivity and excellent reproducibility SERS substrate to provide a versatile platform for detecting analytes. Rhodamine 6G (R6G) is used to evaluate the sensitivity and reproducibility of these AgNWs SERS substrates. Even the low concentration of the R6G was 10-10 mol/L, the SERS features of R6G could be still observed clearly, and the uniform distribution of enhancement factor (EF) was higher than 0.8 × 104 accounting for about 75 % in the observed mapping area. Moreover, the relative standard deviation (RSD) of SERS intensity at the band of 610 cm-1 was used to estimate the signal reproducibility, and the calculated RSD value of aligned AgNWs substrate was about 3.6%, which was much higher than that of the randomly distributed AgNWs (26.8%) because of the highly aligned structure of silver nanowires with abundant and uniform inherent "hot spots". In addition, potential SERS detection of other small molecule, e.g. melamine was also demonstrated in the micromolar range.
Collapse
Affiliation(s)
- Shaoyun Chen
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, China
| | - Qi Li
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, China
| | - Du Tian
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, China
| | - Pai Ke
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, China
| | - Xinxin Yang
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, China
| | - Qingyun Wu
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, China
| | - Jian Chen
- Instrumental Analysis and Research Center, Sun Yat-sen University, Guangzhou 510275, China
| | - Chenglong Hu
- Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education, School of Optoelectronic Materials and Technology, Jianghan University, Wuhan 430056, China.
| | - Hongbing Ji
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China.
| |
Collapse
|
4
|
Naz G, Asghar H, Ramzan M, Arshad M, Ahmed R, Tahir MB, Haq BU, Baig N, Jalil J. High-yield synthesis of silver nanowires for transparent conducting PET films. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2021; 12:624-632. [PMID: 34285865 PMCID: PMC8261274 DOI: 10.3762/bjnano.12.51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Silver nanowires (AgNWs) with ultrahigh purity and high yield were successfully synthesized by employing a modified facile polyol method using PVP as a capping and stabilizing agent. The reaction was carried out at a moderate temperature of 160 °C under mild stirring for about 3 h. The prepared AgNWs exhibited parallel alignment on a large scale and were characterized by UV-vis spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), and PL spectroscopy. The luminescent AgNWs exhibited red emission, which was accredited to deep holes. The SEM results confirmed the formation of AgNWs of 3.3 to 4.7 µm in length with an average diameter of about 86 nm, that is, the aspect ratio values of the AgNWs exceeded 45. An ink consisting of hydroxyethyl cellulose (HEC) and AgNWs was transferred to polyethylene terephthalate (PET) films by simple mechanical pressing. The PET films retained transparency and flexibility after the ink coating. The maximum transmittance value of as-prepared PET films in the visible region was estimated to be about 92.5% with a sheet resistance value of ca. 20 Ω/sq. This makes the films a potential substitute to commonly used expensive indium tin oxide (ITO) in the field of flexible optoelectronics.
Collapse
Affiliation(s)
- Gul Naz
- Institute of Physics, Faculty of Science, The Islamia University of Bahawalpur, Baghdad-ul-Jadid Campus, Bahawalpur 63100, Pakistan
| | - Hafsa Asghar
- Institute of Physics, Faculty of Science, The Islamia University of Bahawalpur, Baghdad-ul-Jadid Campus, Bahawalpur 63100, Pakistan
| | - Muhammad Ramzan
- Institute of Physics, Faculty of Science, The Islamia University of Bahawalpur, Baghdad-ul-Jadid Campus, Bahawalpur 63100, Pakistan
| | - Muhammad Arshad
- Nanosciences and Nanotechnology Department, National Centre for Physics, Quaid-i-Azam University Islamabad, Pakistan
| | - Rashid Ahmed
- Centre for High Energy Physics, The University of Punjab, Lahore, Pakistan
| | - Muhammad Bilal Tahir
- Department of Physics, Khawaja Fareed University of Engineering and Information Technology, Rahim Yar Khan, Pakistan
| | - Bakhtiar Ul Haq
- Advanced Functional Materials & Optoelectronics Laboratory (AFMOL), Department of Physics, Faculty of Science, King Khalid University, Abha 9004, Saudi Arabia
| | - Nadeem Baig
- Center of Research Excellent in Desalination & Water Treatment, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Junaid Jalil
- Institute of Physics, Faculty of Science, The Islamia University of Bahawalpur, Baghdad-ul-Jadid Campus, Bahawalpur 63100, Pakistan
| |
Collapse
|
5
|
Bai S, Serien D, Ma Y, Obata K, Sugioka K. Attomolar Sensing Based on Liquid Interface-Assisted Surface-Enhanced Raman Scattering in Microfluidic Chip by Femtosecond Laser Processing. ACS APPLIED MATERIALS & INTERFACES 2020; 12:42328-42338. [PMID: 32799517 DOI: 10.1021/acsami.0c11322] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Surface-enhanced Raman scattering (SERS) is a multidisciplinary trace analysis technique based on plasmonic effects. The development of SERS microfluidic chips has been exploited extensively in recent times impacting on applications in diverse fields. However, despite much progress, the excitation of label-free molecules is extremely challenging when analyte concentrations are lower than 1 nM because of the blinking SERS effect. In this paper, a novel analytical strategy which can achieve detection limits at an attomolar level is proposed. This performance improvement is due to the use of a glass microfluidic chip that features an analyte air-solution interface which forms on the SERS substrate in the microfluidic channel, whereby the analyte molecules aggregate locally at the interface during the measurement, hence the term liquid interface-assisted SERS (LI-SERS). The microfluidic chips are fabricated using hybrid femtosecond (fs) laser processing consisting of fs laser-assisted chemical etching, selective metallization, and metal surface nanostructuring. The novel LI-SERS technique can achieve an analytical enhancement factor of 1.5 × 1014, providing a detection limit below 10-17 M (<10 aM). The mechanism for the extraordinary enhancement afforded by LI-SERS is attributed to Marangoni convection induced by the photothermal effect.
Collapse
Affiliation(s)
- Shi Bai
- Advanced Laser Processing Research Team, RIKEN Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Daniela Serien
- Advanced Laser Processing Research Team, RIKEN Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Ying Ma
- School of Mechanical Engineering & Automation, Beihang University, No. 37 Xueyuan Road, Haidian District, Beijing 100191, China
| | - Kotaro Obata
- Advanced Laser Processing Research Team, RIKEN Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Koji Sugioka
- Advanced Laser Processing Research Team, RIKEN Center for Advanced Photonics, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| |
Collapse
|
6
|
Juneja S, Bhattacharya J. Coffee ring effect assisted improved S. aureus screening on a physically restrained gold nanoflower enriched SERS substrate. Colloids Surf B Biointerfaces 2019; 182:110349. [DOI: 10.1016/j.colsurfb.2019.110349] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 07/05/2019] [Accepted: 07/06/2019] [Indexed: 12/29/2022]
|
7
|
Rekha CR, Sameera S, Nayar VU, Gopchandran KG. Simultaneous detection of different probe molecules using silver nanowires as SERS substrates. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 213:150-158. [PMID: 30685553 DOI: 10.1016/j.saa.2019.01.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 12/05/2018] [Accepted: 01/15/2019] [Indexed: 06/09/2023]
Abstract
Metallic silver nanowires with high yield were synthesized using a modified seed mediated approach at room temperature. Ribbon-like nanostructures were obtained when the concentration of NaOH was lower and further increase of NaOH transformed it into long nanowires. These nanowires possess high aspect ratio, with length and diameter ~6.5 μm and 17 nm respectively. The surface enhanced Raman scattering activity of these nanowires was tested with three different probe molecules viz., crystal violet, malachite green and nile blue chloride using visible (514.4 nm) and near-infrared (784.8 nm) excitation lines. The minimum detection limits for crystal violet and nile blue chloride molecules were found to be down to 10-7 M with good linear responses, as evidenced by values of correlation coefficients, indicating their potential for a variety of applications such as sensing. Principal component analysis was performed with the surface enhanced Raman spectra in order to discriminate the dye molecules and their mixture, simultaneously. The first two principal components, which provided 69.80 and 27.93% of the total data variance, could be conveniently represented as a two dimensional PCA score plot. The score plot showed clear clustering of probe molecules and their mixture. The relative contribution of wavenumbers to each of the two principal components was identified by plotting the PCA loading matrix. These results further promote possibilities of quantification of multiplexed SERS detection and analysis.
Collapse
Affiliation(s)
- C R Rekha
- Department of Optoelectronics, University of Kerala, Kariavattom, Thiruvananthapuram, Kerala 695581, India
| | - S Sameera
- Department of Optoelectronics, University of Kerala, Kariavattom, Thiruvananthapuram, Kerala 695581, India
| | - V U Nayar
- Department of Optoelectronics, University of Kerala, Kariavattom, Thiruvananthapuram, Kerala 695581, India
| | - K G Gopchandran
- Department of Optoelectronics, University of Kerala, Kariavattom, Thiruvananthapuram, Kerala 695581, India.
| |
Collapse
|
8
|
Li Y, Yuan X, Yang H, Chao Y, Guo S, Wang C. One-Step Synthesis of Silver Nanowires with Ultra-Long Length and Thin Diameter to Make Flexible Transparent Conductive Films. MATERIALS 2019; 12:ma12030401. [PMID: 30696028 PMCID: PMC6384764 DOI: 10.3390/ma12030401] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/22/2019] [Accepted: 01/24/2019] [Indexed: 12/17/2022]
Abstract
High aspect ratio silver nanowires (AgNWs) with ultra-long length and thin diameter were synthesized through bromine ion (Br−)-assisted one-step synthesis method. The bromine ions were used as pivotal passivating agent. When the molar ratio of Br−/Cl− was 1:4, the average diameter of AgNWs was as low as ~40 nm, the average length was as high as ~120 μm, and the aspect ratio reached 2500. Networks of AgNWs were fabricated using as-prepared high-quality AgNWs as conducting material and hydroxyethyl cellulose (HEC) as the adhesive polymer. As a result, a low sheet resistance down to ~3.5 Ω sq−1 was achieved with a concomitant transmittance of 88.20% and a haze of 4.12%. The ultra-low sheet resistance of conductive film was attributed to the long and thin AgNWs being able to form a more effective network. The adhesion of the AgNWs to the substrate was 0/5B (ISO/ASTM). The insights given in this paper provide the key guidelines for bromine ion-assisted synthesis of long and thin AgNWs, and further designing low-resistance AgNW-based conductive film for optoelectronic devices.
Collapse
Affiliation(s)
- Yuxiu Li
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China.
| | - Ximin Yuan
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China.
| | - Hongwei Yang
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China.
| | - Yunxiu Chao
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China.
| | - Shuailong Guo
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China.
| | - Chuan Wang
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming 650106, China.
| |
Collapse
|
9
|
Šubr M, Procházka M. Polarization- and Angular-Resolved Optical Response of Molecules on Anisotropic Plasmonic Nanostructures. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E418. [PMID: 29890758 PMCID: PMC6027211 DOI: 10.3390/nano8060418] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 05/28/2018] [Accepted: 06/07/2018] [Indexed: 11/17/2022]
Abstract
A sometimes overlooked degree of freedom in the design of many spectroscopic (mainly Raman) experiments involve the choice of experimental geometry and polarization arrangement used. Although these aspects usually play a rather minor role, their neglect may result in a misinterpretation of the experimental results. It is well known that polarization- and/or angular- resolved spectroscopic experiments allow one to classify the symmetry of the vibrations involved or the molecular orientation with respect to a smooth surface. However, very low detection limits in surface-enhancing spectroscopic techniques are often accompanied by a complete or partial loss of this detailed information. In this review, we will try to elucidate the extent to which this approach can be generalized for molecules adsorbed on plasmonic nanostructures. We will provide a detailed summary of the state-of-the-art experimental findings for a range of plasmonic platforms used in the last ~ 15 years. Possible implications on the design of plasmon-based molecular sensors for maximum signal enhancement will also be discussed.
Collapse
Affiliation(s)
- Martin Šubr
- Faculty of Mathematics and Physics, Institute of Physics, Charles University, 121 16 Prague 2, Czech Republic.
| | - Marek Procházka
- Faculty of Mathematics and Physics, Institute of Physics, Charles University, 121 16 Prague 2, Czech Republic.
| |
Collapse
|
10
|
Mampallil D, Eral HB. A review on suppression and utilization of the coffee-ring effect. Adv Colloid Interface Sci 2018; 252:38-54. [PMID: 29310771 DOI: 10.1016/j.cis.2017.12.008] [Citation(s) in RCA: 250] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 11/29/2017] [Accepted: 12/14/2017] [Indexed: 01/22/2023]
Abstract
Evaporation of sessile droplets containing non-volatile solutes dispersed in a volatile solvent leaves behind ring-like solid stains. As the volatile species evaporates, pinning of the contact line gives rise to capillary flows that transport non-volatile solutes to the contact line. This phenomenon, called the coffee-ring effect, compromises the overall performance of industrially relevant manufacturing processes involving evaporation such as printing, biochemical analysis, manufacturing of nano-structured materials through colloidal and macromolecular patterning. Various approaches have been developed to suppress this phenomenon, which is otherwise difficult to avoid. The coffee-ring effect has also been leveraged to prepare new materials through convection induced assembly. This review underlines not only the strategies developed to suppress the coffee-ring effect but also sheds light on approaches to arrive at novel processes and materials. Working principles and applicability of these strategies are discussed together with a critical comparison.
Collapse
Affiliation(s)
- Dileep Mampallil
- Indian Institute of Science Education & Research Tirupati, Mangalam P. O., Tirupati-517507, India.
| | - Huseyin Burak Eral
- Process & Energy Department, 3ME Faculty, TU Delft, Leeghwaterstraat 39, 2628CB Delft, The Netherlands.
| |
Collapse
|
11
|
Li Y, Guo S, Yang H, Chao Y, Jiang S, Wang C. One-step synthesis of ultra-long silver nanowires of over 100 μm and their application in flexible transparent conductive films. RSC Adv 2018; 8:8057-8063. [PMID: 35542033 PMCID: PMC9078500 DOI: 10.1039/c7ra13683h] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 01/28/2018] [Indexed: 11/21/2022] Open
Abstract
Silver nanowires (AgNWs) >100 μm and even 160 μm in length have been synthesized using a facile and rationally designed solvothermal method by heating preservation at 150 °C. The length of the as-synthesized AgNWs is over 4–5 times longer than those previously reported, while the diameter range is from 40 nm to 85 nm. A transparent conducting film (TCF) was fabricated using hydroxyethyl cellulose (HEC) as the adhesive polymer, and it achieved exceptional and stable optoelectronic properties. Its low sheet resistance of ∼19 Ω sq−1 (on polyethylene terephthalate, PET) and high optical transmittance of ∼88% are superior to that of expensive indium tin oxide (ITO) films. More significantly, the AgNW network demonstrates excellent adhesion to PET substrates. This study indicates that ultra-long silver nanowires can serve as an alternative to ITO, which also demonstrates its potential application in flexible electronic devices. Ultra-long silver nanowires (100–160 μm) were applied in flexible transparent conductive films showing low sheet resistance and high optical transmittance.![]()
Collapse
Affiliation(s)
- Yuxiu Li
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- 650106 Kunming
- People's Republic of China
| | - Shuailong Guo
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- 650106 Kunming
- People's Republic of China
| | - Hongwei Yang
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- 650106 Kunming
- People's Republic of China
| | - Yunxiu Chao
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- 650106 Kunming
- People's Republic of China
| | - Shaozhuang Jiang
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- 650106 Kunming
- People's Republic of China
| | - Chuan Wang
- State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals
- Kunming Institute of Precious Metals
- 650106 Kunming
- People's Republic of China
| |
Collapse
|
12
|
Šubr M, Petr M, Kylián O, Štěpánek J, Veis M, Procházka M. Anisotropic Optical Response of Silver Nanorod Arrays: Surface Enhanced Raman Scattering Polarization and Angular Dependences Confronted with Ellipsometric Parameters. Sci Rep 2017; 7:4293. [PMID: 28655920 PMCID: PMC5487367 DOI: 10.1038/s41598-017-04565-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 05/17/2017] [Indexed: 11/08/2022] Open
Abstract
Silver nanorod arrays prepared by oblique angle deposition (AgOADs) represent versatile, simple and inexpensive substrates for high sensitivity surface enhanced Raman scattering (SERS) applications. Their anisotropic nature suggests that their optical responses such as the SERS signal, the depolarization ratio, reflectivity and ellipsometric parameters critically depend on the states of polarization, nanorod angular arrangement and specific illumination-observation geometry. SERS polarization and angular dependences of AgOADs were measured using methylene blue (MB) molecule. Our study constitutes, to our knowledge, the most detailed investigation of such characteristics of plasmonic nanostructures to date. This is due to the 90°-scattering geometry used in which two out of three Euler angles determining the nanorod spatial orientation and four polarization combinations can be varied simultaneously. We attributed the anisotropic optical response to anisotropic (pseudo)refractive index caused by different periodicity of our structures in different directions since the plasmonic properties were found rather isotropic. For the first time we demonstrate very good correspondence between SERS intensities and ellipsometric parameters for all measured configurations as compared on the basis of the surface selection rules. Obtained results enable quantitative analysis of MB Raman tensor elements, indicating that the molecules adsorb predominantly with the symmetry axis perpendicular to the surface.
Collapse
Affiliation(s)
- Martin Šubr
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16, Prague, Czech Republic.
| | - Martin Petr
- Charles University, Faculty of Mathematics and Physics, Department of Macromolecular Physics, V Holešovičkách 2, 180 00, Prague, Czech Republic
| | - Ondřej Kylián
- Charles University, Faculty of Mathematics and Physics, Department of Macromolecular Physics, V Holešovičkách 2, 180 00, Prague, Czech Republic
| | - Josef Štěpánek
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16, Prague, Czech Republic
| | - Martin Veis
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16, Prague, Czech Republic
| | - Marek Procházka
- Charles University, Faculty of Mathematics and Physics, Institute of Physics, Ke Karlovu 5, 121 16, Prague, Czech Republic.
| |
Collapse
|
13
|
Chen H, Chen S, Guan Y, Yan H, Jin R, Zhang H, Li D, Zhong J, Li L. An efficient polymer for producing electrospun transparent conducting films through simple procedures and a mild post-process. RSC Adv 2017. [DOI: 10.1039/c7ra08520f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
By using PEO (Mw = 50 000), good electrospun transparent conducting films are prepared using simple procedures and a mild post-process.
Collapse
Affiliation(s)
- Hui Chen
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- School of Optoelectronic Information
- University of Electronic Science and Technology of China (UESTC)
- Chengdu 610054
- P. R. China
| | - Shanyong Chen
- Research Institute for New Materials Technology
- Chongqing University of Arts and Sciences
- Yongchuan 402160
- P. R. China
| | - Youwei Guan
- Research Institute for New Materials Technology
- Chongqing University of Arts and Sciences
- Yongchuan 402160
- P. R. China
| | - Hengqing Yan
- Research Institute for New Materials Technology
- Chongqing University of Arts and Sciences
- Yongchuan 402160
- P. R. China
| | - Rong Jin
- Research Institute for New Materials Technology
- Chongqing University of Arts and Sciences
- Yongchuan 402160
- P. R. China
| | - Huai Zhang
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- School of Optoelectronic Information
- University of Electronic Science and Technology of China (UESTC)
- Chengdu 610054
- P. R. China
| | - De Li
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- School of Optoelectronic Information
- University of Electronic Science and Technology of China (UESTC)
- Chengdu 610054
- P. R. China
| | - Jian Zhong
- State Key Laboratory of Electronic Thin Films and Integrated Devices
- School of Optoelectronic Information
- University of Electronic Science and Technology of China (UESTC)
- Chengdu 610054
- P. R. China
| | - Lu Li
- Research Institute for New Materials Technology
- Chongqing University of Arts and Sciences
- Yongchuan 402160
- P. R. China
| |
Collapse
|
14
|
Fang F, Li YQ, Huang GW, Xiao HM, Feng QP, Hu N, Fu SY. Electrical anisotropy and multidimensional pressure sensor of aligned Fe3O4@silver nanowire/polyaniline composite films under an extremely low magnetic field. RSC Adv 2017. [DOI: 10.1039/c6ra25128e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The PDMS sealed aligned Ag nanowire/PANI composite film as a multi-dimensional pressure sensor.
Collapse
Affiliation(s)
- Fang Fang
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
- University of Chinese Academy of Sciences
| | - Yuan-Qing Li
- College of Aerospace Engineering
- Chongqing University
- Chongqing 400044
- China
| | - Gui-Wen Huang
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Hong-Mei Xiao
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Qing-Ping Feng
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Ning Hu
- College of Aerospace Engineering
- Chongqing University
- Chongqing 400044
- China
| | - Shao-Yun Fu
- Technical Institute of Physics and Chemistry
- Chinese Academy of Sciences
- Beijing 100190
- China
- College of Aerospace Engineering
| |
Collapse
|
15
|
Zhou W, Bai S, Ma Y, Ma D, Hou T, Shi X, Hu A. Laser-Direct Writing of Silver Metal Electrodes on Transparent Flexible Substrates with High-Bonding Strength. ACS APPLIED MATERIALS & INTERFACES 2016; 8:24887-92. [PMID: 27560607 DOI: 10.1021/acsami.6b07696] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We demonstrate a novel approach to rapidly fabricate conductive silver electrodes on transparent flexible substrates with high-bonding strength by laser-direct writing. A new type of silver ink composed of silver nitrate, sodium citrate, and polyvinylpyrrolidone (PVP) was prepared in this work. The role of PVP was elucidated for improving the quality of silver electrodes. Silver nanoparticles and sintered microstructures were simultaneously synthesized and patterned on a substrate using a focused 405 nm continuous wave laser. The writing was completed through the transparent flexible substrate with a programmed 2D scanning sample stage. Silver electrodes fabricated by this approach exhibit a remarkable bonding strength, which can withstand an adhesive tape test at least 50 times. After a 1500 time bending test, the resistance only increased 5.2%. With laser-induced in-situ synthesis, sintering, and simultaneous patterning of silver nanoparticles, this technology is promising for the facile fabrication of conducting electronic devices on flexible substrates.
Collapse
Affiliation(s)
- Weiping Zhou
- Institute of Laser Engineering, Beijing University of Technology , 100 Pingle Yuan, Chaoyang District, Beijing 100124, China
| | - Shi Bai
- Institute of Laser Engineering, Beijing University of Technology , 100 Pingle Yuan, Chaoyang District, Beijing 100124, China
| | - Ying Ma
- Institute of Laser Engineering, Beijing University of Technology , 100 Pingle Yuan, Chaoyang District, Beijing 100124, China
| | - Delong Ma
- Institute of Laser Engineering, Beijing University of Technology , 100 Pingle Yuan, Chaoyang District, Beijing 100124, China
| | - Tingxiu Hou
- Institute of Laser Engineering, Beijing University of Technology , 100 Pingle Yuan, Chaoyang District, Beijing 100124, China
| | - Xiaomin Shi
- Institute of Laser Engineering, Beijing University of Technology , 100 Pingle Yuan, Chaoyang District, Beijing 100124, China
| | - Anming Hu
- Institute of Laser Engineering, Beijing University of Technology , 100 Pingle Yuan, Chaoyang District, Beijing 100124, China
- Department of Mechanical, Aerospace and Biomedical Engineering, University of Tennessee, Knoxville , 1512 Middle Drive, Knoxville, Tennessee 37996, United States
| |
Collapse
|
16
|
Hu H, Wang Z, Ye Q, He J, Nie X, He G, Song C, Shang W, Wu J, Tao P, Deng T. Substrateless Welding of Self-Assembled Silver Nanowires at Air/Water Interface. ACS APPLIED MATERIALS & INTERFACES 2016; 8:20483-20490. [PMID: 27437907 DOI: 10.1021/acsami.6b06334] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Integrating connected silver nanowire networks with flexible polymers has appeared as a popular way to prepare flexible electronics. To reduce the contact resistance and enhance the connectivity between silver nanowires, various welding techniques have been developed. Herein, rather than welding on solid supporting substrates, which often requires complicated transferring operations and also may pose damage to heat-sensitive substrates, we report an alternative approach to prepare easily transferrable conductive networks through welding of self-assembled silver nanowires at the air/water interface using plasmonic heating. The intriguing welding behavior of partially aligned silver nanowires was analyzed with combined experimental observation and theoretical modeling. The underlying water not only physically supports the assembled silver nanowires but also buffers potential overheating during the welding process, thereby enabling effective welding within a broad range of illumination power density and illumination duration. The welded networks could be directly integrated with PDMS substrates to prepare high-performance stable flexible heaters that are stretchable, bendable, and can be easily patterned to explore selective heating applications.
Collapse
Affiliation(s)
- Hang Hu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Zhongyong Wang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Qinxian Ye
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Jiaqing He
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Xiao Nie
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Gufeng He
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P.R. China
| | - Chengyi Song
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Wen Shang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Jianbo Wu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Peng Tao
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Tao Deng
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| |
Collapse
|
17
|
Lee M, Mun C, Kim DH, Chang SC, Park SG. Analyte-concentrating 3D hybrid plasmonic nanostructures for use in highly sensitive chemical sensors. RSC Adv 2016. [DOI: 10.1039/c6ra20962a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
This paper characterizes the analyte-concentrating effects of 3D porous Ag hybrid nanostructures to develop ultrasensitive SERS-based toxin sensors.
Collapse
Affiliation(s)
- MinKyoung Lee
- Advanced Functional Thin Films Department
- Korea Institute of Materials Science (KIMS)
- Changwon
- Korea
- Institute of BioPhysio Sensor Technology
| | - ChaeWon Mun
- Advanced Functional Thin Films Department
- Korea Institute of Materials Science (KIMS)
- Changwon
- Korea
| | - Dong-Ho Kim
- Advanced Functional Thin Films Department
- Korea Institute of Materials Science (KIMS)
- Changwon
- Korea
| | - Seung-Cheol Chang
- Institute of BioPhysio Sensor Technology
- Graduate Department of Molecular Science Technology
- Pusan National University
- Busan 46241
- Korea
| | - Sung-Gyu Park
- Advanced Functional Thin Films Department
- Korea Institute of Materials Science (KIMS)
- Changwon
- Korea
| |
Collapse
|
18
|
Peng P, Hu A, Gerlich AP, Zou G, Liu L, Zhou YN. Joining of Silver Nanomaterials at Low Temperatures: Processes, Properties, and Applications. ACS APPLIED MATERIALS & INTERFACES 2015; 7:12597-12618. [PMID: 26005792 DOI: 10.1021/acsami.5b02134] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A review is provided, which first considers low-temperature diffusion bonding with silver nanomaterials as filler materials via thermal sintering for microelectronic applications, and then other recent innovations in low-temperature joining are discussed. The theoretical background and transition of applications from micro to nanoparticle (NP) pastes based on joining using silver filler materials and nanojoining mechanisms are elucidated. The mechanical and electrical properties of sintered silver nanomaterial joints at low temperatures are discussed in terms of the key influencing factors, such as porosity and coverage of substrates, parameters for the sintering processes, and the size and shape of nanomaterials. Further, the use of sintered silver nanomaterials for printable electronics and as robust surface-enhanced Raman spectroscopy substrates by exploiting their optical properties is also considered. Other low-temperature nanojoining strategies such as optical welding of silver nanowires (NWs) through a plasmonic heating effect by visible light irradiation, ultrafast laser nanojoining, and ion-activated joining of silver NPs using ionic solvents are also summarized. In addition, pressure-driven joining of silver NWs with large plastic deformation and self-joining of gold or silver NWs via oriented attachment of clean and activated surfaces are summarized. Finally, at the end of this review, the future outlook for joining applications with silver nanomaterials is explored.
Collapse
Affiliation(s)
| | - Anming Hu
- §Mechanical, Aerospace and Biomedical Engineering Department, University of Tennessee, 1512 Middle Drive, Knoxville, Tennessee 37996-2210, United States
| | | | - Guisheng Zou
- ∥Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Lei Liu
- ∥Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | - Y Norman Zhou
- ∥Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| |
Collapse
|