51
|
Fortuni B, Fujita Y, Ricci M, Inose T, Aubert R, Lu G, Hutchison JA, Hofkens J, Latterini L, Uji-i H. A novel method for in situ synthesis of SERS-active gold nanostars on polydimethylsiloxane film. Chem Commun (Camb) 2017; 53:5121-5124. [DOI: 10.1039/c7cc01776f] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A one-step method to form gold nanostars on a polydimethylsiloxane film is proposed for highly-sensitive SERS substrates.
Collapse
Affiliation(s)
- B. Fortuni
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200G-F
- Belgium
| | - Y. Fujita
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200G-F
- Belgium
| | - M. Ricci
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200G-F
- Belgium
| | - T. Inose
- RIES, Hokkaido University, N20W10
- Kita-Ward Sapporo
- Japan
| | - R. Aubert
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200G-F
- Belgium
| | - G. Lu
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200G-F
- Belgium
| | - J. A. Hutchison
- Université de Strasbourg & CNRS UMR 7006
- Strasbourg
- France
- School of Chemistry and Bio21 Institute, University of Melbourne
- Victoria
| | - J. Hofkens
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200G-F
- Belgium
- RIES, Hokkaido University, N20W10
- Kita-Ward Sapporo
- Japan
| | - L. Latterini
- Department of Chemistry
- Biology and Biotechnology
- University of Perugia
- Perugia
- Italy
| | - H. Uji-i
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven, Celestijnenlaan 200G-F
- Belgium
- RIES, Hokkaido University, N20W10
- Kita-Ward Sapporo
- Japan
| |
Collapse
|
52
|
Reguera J, Langer J, Jiménez de Aberasturi D, Liz-Marzán LM. Anisotropic metal nanoparticles for surface enhanced Raman scattering. Chem Soc Rev 2017; 46:3866-3885. [DOI: 10.1039/c7cs00158d] [Citation(s) in RCA: 344] [Impact Index Per Article: 49.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Anisotropy in plasmonic metal nanoparticles plays a major role in the enhancement of the Raman scattering of adsorbed molecules.
Collapse
Affiliation(s)
- Javier Reguera
- CIC biomaGUNE
- 20014 Donostia-San Sebastián
- Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine
- Ciber-BBN
| | - Judith Langer
- CIC biomaGUNE
- 20014 Donostia-San Sebastián
- Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine
- Ciber-BBN
| | - Dorleta Jiménez de Aberasturi
- CIC biomaGUNE
- 20014 Donostia-San Sebastián
- Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine
- Ciber-BBN
| | - Luis M. Liz-Marzán
- CIC biomaGUNE
- 20014 Donostia-San Sebastián
- Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine
- Ciber-BBN
| |
Collapse
|
53
|
Yuan H, Liu J, Lu Y, Wang Z, Wei G, Wu T, Ye G, Chen J, Zhang S, Zhang X. Nano Endoscopy with Plasmon-Enhanced Fluorescence for Sensitive Sensing Inside Ultrasmall Volume Samples. Anal Chem 2016; 89:1045-1048. [PMID: 28194985 DOI: 10.1021/acs.analchem.6b03876] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Plasmon-enhanced fluorescence (PEF) generally requires the samples settled on a metal substrate and the effective enhancement distance is less than 100 nm, which limit its application in intracellular sensing. Herein, we report a nano endoscopy with PEF effect for sensing analytes inside the extremely small volume samples. The nano endoscopy was fabricated by assembling single nanoporous gold nanowire (PGNW) on the tip of a tungsten needle. It was accurately manipulated to insert into a micro droplet, and an effective sensing was realized at micrometre scale with submicrometer resolution. By taking lysozyme as a model sensing target, a 23-fold improvement of sensitivity was obtained, comparing with that of smooth gold nanowire (SGNW). These results indicated that the nano endoscopy can realize a high spatial resolution sensing, showing its potential application in intracellular sensing.
Collapse
Affiliation(s)
- Hang Yuan
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University , Beijing 100084, P. R. China
| | - Jie Liu
- Department of Chemistry, Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Tsinghua University , Beijing 100084, P. R. China
| | - Yuexiang Lu
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University , Beijing 100084, P. R. China
| | - Zhe Wang
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University , Beijing 100084, P. R. China
| | - Guoyu Wei
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University , Beijing 100084, P. R. China
| | - Tianhao Wu
- Department of Chemistry, Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Tsinghua University , Beijing 100084, P. R. China
| | | | - Jing Chen
- Institute of Nuclear and New Energy Technology, Collaborative Innovation Center of Advanced Nuclear Energy Technology, Tsinghua University , Beijing 100084, P. R. China
| | - Sichun Zhang
- Department of Chemistry, Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Tsinghua University , Beijing 100084, P. R. China
| | - Xinrong Zhang
- Department of Chemistry, Beijing Key Laboratory for Microanalytical Methods and Instrumentation, Tsinghua University , Beijing 100084, P. R. China
| |
Collapse
|
54
|
Darvishzadeh-Varcheie M, Guclu C, Ragan R, Boyraz O, Capolino F. Electric field enhancement with plasmonic colloidal nanoantennas excited by a silicon nitride waveguide. OPTICS EXPRESS 2016; 24:28337-28352. [PMID: 27958544 DOI: 10.1364/oe.24.028337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We investigate the feasibility of CMOS-compatible optical structures to develop novel integrated spectroscopy systems. We show that local field enhancement is achievable utilizing dimers of plasmonic nanospheres that can be assembled from colloidal solutions on top of a CMOS-compatible optical waveguide. The resonant dimer nanoantennas are excited by modes guided in the integrated silicon nitride waveguide. Simulations show that 100-fold electric field enhancement builds up in the dimer gap as compared to the waveguide evanescent field amplitude at the same location. We investigate how the field enhancement depends on dimer location, orientation, distance and excited waveguide mode.
Collapse
|
55
|
Ma X, Zhu Y, Kim S, Liu Q, Byrley P, Wei Y, Zhang J, Jiang K, Fan S, Yan R, Liu M. Sharp-Tip Silver Nanowires Mounted on Cantilevers for High-Aspect-Ratio High-Resolution Imaging. NANO LETTERS 2016; 16:6896-6902. [PMID: 27739683 DOI: 10.1021/acs.nanolett.6b02802] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Despite many efforts to fabricate high-aspect-ratio atomic force microscopy (HAR-AFM) probes for high-fidelity, high-resolution topographical imaging of three-dimensional (3D) nanostructured surfaces, current HAR probes still suffer from unsatisfactory performance, low wear-resistivity, and extravagant prices. The primary objective of this work is to demonstrate a novel design of a high-resolution (HR) HAR AFM probe, which is fabricated through a reliable, cost-efficient benchtop process to precisely implant a single ultrasharp metallic nanowire on a standard AFM cantilever probe. The force-displacement curve indicated that the HAR-HR probe is robust against buckling and bending up to 150 nN. The probes were tested on polymer trenches, showing a much better image fidelity when compared with standard silicon tips. The lateral resolution, when scanning a rough metal thin film and single-walled carbon nanotubes (SW-CNTs), was found to be better than 8 nm. Finally, stable imaging quality in tapping mode was demonstrated for at least 15 continuous scans indicating high resistance to wear. These results demonstrate a reliable benchtop fabrication technique toward metallic HAR-HR AFM probes with performance parallel or exceeding that of commercial HAR probes, yet at a fraction of their cost.
Collapse
Affiliation(s)
| | | | | | | | | | - Yang Wei
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University , Beijing 100084, People's Republic of China
| | - Jin Zhang
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University , Beijing 100084, People's Republic of China
| | - Kaili Jiang
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University , Beijing 100084, People's Republic of China
| | - Shoushan Fan
- State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics and Tsinghua-Foxconn Nanotechnology Research Center, Tsinghua University , Beijing 100084, People's Republic of China
| | | | | |
Collapse
|
56
|
Kumar A, Kim S, Nam JM. Plasmonically Engineered Nanoprobes for Biomedical Applications. J Am Chem Soc 2016; 138:14509-14525. [PMID: 27723324 DOI: 10.1021/jacs.6b09451] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The localized surface plasmon resonance of metal nanoparticles is the collective oscillation of electrons on particle surface, induced by incident light, and is a particle composition-, morphology-, and coupling-dependent property. Plasmonic engineering deals with highly precise formation of the targeted nanostructures with targeted plasmonic properties (e.g., electromagnetic field distribution and enhancement) via controlled synthetic, assembling, and atomic/molecular tuning strategies. These plasmonically engineered nanoprobes (PENs) have a variety of unique and beneficial physical, chemical, and biological properties, including optical signal enhancement, catalytic, and local temperature-tuning photothermal properties. In particular, for biomedical applications, there are many useful properties from PENs including LSPR-based sensing, surface-enhanced Raman scattering, metal-enhanced fluorescence, dark-field light-scattering, metal-mediated fluorescence resonance energy transfer, photothermal effect, photodynamic effect, photoacoustic effect, and plasmon-induced circular dichroism. These properties can be utilized for the development of new biotechnologies and biosensing, bioimaging, therapeutic, and theranostic applications in medicine. This Perspective introduces the concept of plasmonic engineering in designing and synthesizing PENs for biomedical applications, gives recent examples of biomedically functional PENs, and discusses the issues and future prospects of PENs for practical applications in bioscience, biotechnology, and medicine.
Collapse
Affiliation(s)
- Amit Kumar
- Department of Chemistry, Seoul National University , Seoul 151-747, South Korea
| | - Sungi Kim
- Department of Chemistry, Seoul National University , Seoul 151-747, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University , Seoul 151-747, South Korea
| |
Collapse
|
57
|
Liu J, Yin D, Wang S, Chen HY, Liu Z. Probing Low-Copy-Number Proteins in a Single Living Cell. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608237] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jia Liu
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; 163 Xianlin Avenue Nanjing 210023 China
| | - Danyang Yin
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; 163 Xianlin Avenue Nanjing 210023 China
| | - Shuangshou Wang
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; 163 Xianlin Avenue Nanjing 210023 China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; 163 Xianlin Avenue Nanjing 210023 China
| | - Zhen Liu
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; 163 Xianlin Avenue Nanjing 210023 China
| |
Collapse
|
58
|
Liu J, Yin D, Wang S, Chen HY, Liu Z. Probing Low-Copy-Number Proteins in a Single Living Cell. Angew Chem Int Ed Engl 2016; 55:13215-13218. [DOI: 10.1002/anie.201608237] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Jia Liu
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; 163 Xianlin Avenue Nanjing 210023 China
| | - Danyang Yin
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; 163 Xianlin Avenue Nanjing 210023 China
| | - Shuangshou Wang
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; 163 Xianlin Avenue Nanjing 210023 China
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; 163 Xianlin Avenue Nanjing 210023 China
| | - Zhen Liu
- State Key Laboratory of Analytical Chemistry for Life Science; School of Chemistry and Chemical Engineering; Nanjing University; 163 Xianlin Avenue Nanjing 210023 China
| |
Collapse
|
59
|
Abstract
Analysis of individual cells at the subcellular level is important for understanding diseases and accelerating drug discovery. Nanoscale endoscopes allow minimally invasive probing of individual cell interiors. Several such instruments have been presented previously, but they are either too complex to fabricate or require sophisticated external detectors because of low signal collection efficiency. Here we present a nanoendoscope that can locally excite fluorescence in labelled cell organelles and collect the emitted signal for spectral analysis. Finite Difference Time Domain (FDTD) simulations have shown that with an optimized nanoendoscope taper profile, the light emission and collection was localized within ~100 nm. This allows signal detection to be used for nano-photonic sensing of the proximity of fluorophores. Upon insertion into the individual organelles of living cells, the nanoendoscope was fabricated and resultant fluorescent signals collected. This included the signal collection from the nucleus of Acridine orange labelled human fibroblast cells, the nucleus of Hoechst stained live liver cells and the mitochondria of MitoTracker Red labelled MDA-MB-231 cells. The endoscope was also inserted into a live organism, the yellow fluorescent protein producing nematode Caenorhabditis elegans, and a fluorescent signal was collected. To our knowledge this is the first demonstration of in vivo, local fluorescence signal collection on the sub-organelle level.
Collapse
|
60
|
Yu J, Liao F, Gu F, Zeng H. Frequency-resolved optical gating measurement of ultrashort pulses by using single nanowire. Sci Rep 2016; 6:33181. [PMID: 27609521 PMCID: PMC5016840 DOI: 10.1038/srep33181] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 08/19/2016] [Indexed: 01/30/2023] Open
Abstract
The use of ultrashort pulses for fundamental studies and applications has been increasing rapidly in the past decades. Along with the development of ultrashort lasers, exploring new pulse diagnositic approaches with higher signal-to-noise ratio have attracted great scientific and technological interests. In this work, we demonstrate a simple technique of ultrashort pulses characterization with a single semiconductor nanowire. By performing a frequency-resolved optical gating method with a ZnO nanowire coupled to tapered optical microfibers, the phase and amplitude of a pulse series are extracted. The generated signals from the transverse frequency conversion process can be spatially distinguished from the input, so the signal-to-noise ratio is improved and permits lower energy pulses to be identified. Besides, since the nanometer scale of the nonlinear medium provides relaxed phase-matching constraints, a measurement of 300-nm-wide supercontinuum pulses is achieved. This system is highly compatible with standard optical fiber systems, and shows a great potential for applications such as on-chip optical communication.
Collapse
Affiliation(s)
- Jiaxin Yu
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Feng Liao
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Fuxing Gu
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, Shanghai 200093, P. R. China
| | - Heping Zeng
- Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System (Ministry of Education), University of Shanghai for Science and Technology, Shanghai 200093, P. R. China.,State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200062, P. R. China
| |
Collapse
|
61
|
Active modulation of visible light with graphene-loaded ultrathin metal plasmonic antennas. Sci Rep 2016; 6:32144. [PMID: 27561789 PMCID: PMC4999885 DOI: 10.1038/srep32144] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 08/03/2016] [Indexed: 12/17/2022] Open
Abstract
Electro-optical modulation of visible and near-infrared light is important for a wide variety of applications, ranging from communications to sensing and smart windows. However, currently available approaches result in rather bulky devices, suffer from low integrability, and can hardly operate at the low power consumption levels and fast switching rates required by microelectronic drivers. Here we show that planar nanostructures patterned in ultrathin metal-graphene hybrid films sustain highly tunable plasmons in the visible and near-infrared spectral regions. Strong variations in the reflection and absorption of incident light take place when the plasmons are tuned on- and off-resonance with respect to externally incident light. As a result, a remarkable modulation depth (i.e., the maximum relative variation with/without graphene doping) exceeding 90% in transmission and even more dramatic in reflection (>600%) is predicted for graphene-loaded silver films of 1–5 nm thickness and currently attainable lateral dimensions. These new structures hold great potential for fast low-power electro-optical modulation.
Collapse
|
62
|
Oroval M, Coronado-Puchau M, Langer J, Sanz-Ortiz MN, Ribes Á, Aznar E, Coll C, Marcos MD, Sancenón F, Liz-Marzán LM, Martínez-Máñez R. Surface Enhanced Raman Scattering and Gated Materials for Sensing Applications: The Ultrasensitive Detection of Mycoplasma and Cocaine. Chemistry 2016; 22:13488-95. [PMID: 27505065 DOI: 10.1002/chem.201602457] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Indexed: 01/03/2023]
Abstract
We present herein a novel combination of gated mesoporous silica nanoparticles (MSNs) and surface-enhanced Raman scattering (SERS) for sensing applications. As a proof-of-concept, we show the design of a system comprising MSNs loaded with crystal violet (CV), a molecule with high Raman cross section acting as SERS reporter, and capped with either a suitable DNA sequence for the detection of Mycoplasma genomic DNA or with an aptamer that selectively coordinates cocaine. In both cases the presence of the corresponding target analyte in solution (i.e., genomic DNA or cocaine) resulted in the release of CV. CV delivery was detected by SERS upon adsorption on gold nanotriangles (AuNTs), which display an efficient electromagnetic field enhancement and a high colloidal stability. By using this novel procedure a limit of detection of at least 30 copies DNA per μL was determined for the detection of Mycoplasma genomic DNA, whereas cocaine was detected at concentrations as low as 10 nm.
Collapse
Affiliation(s)
- Mar Oroval
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Unidad Mixta Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022, Valencia, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Marc Coronado-Puchau
- Bionanoplasmonics Laboratory, CIC biomaGUNE, Paseo de Miramón 182, 20009, Donostia-San Sebastián, Spain
| | - Judith Langer
- Bionanoplasmonics Laboratory, CIC biomaGUNE, Paseo de Miramón 182, 20009, Donostia-San Sebastián, Spain
| | - Marta Norah Sanz-Ortiz
- Bionanoplasmonics Laboratory, CIC biomaGUNE, Paseo de Miramón 182, 20009, Donostia-San Sebastián, Spain
| | - Ángela Ribes
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Unidad Mixta Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022, Valencia, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Elena Aznar
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Unidad Mixta Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022, Valencia, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Carmen Coll
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Unidad Mixta Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022, Valencia, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - María Dolores Marcos
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Unidad Mixta Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022, Valencia, Spain.,Departmento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022, València, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Félix Sancenón
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Unidad Mixta Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022, Valencia, Spain.,Departmento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022, València, Spain.,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain
| | - Luis M Liz-Marzán
- Bionanoplasmonics Laboratory, CIC biomaGUNE, Paseo de Miramón 182, 20009, Donostia-San Sebastián, Spain. .,Ikerbasque, Basque Foundation for Science, 48013, Bilbao, Spain. .,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain.
| | - Ramón Martínez-Máñez
- Instituto Interuniversitario de Investigación de Reconocimiento Molecular y Desarrollo Tecnológico, Unidad Mixta Universitat Politècnica de València, Universitat de València, Camino de Vera s/n, 46022, Valencia, Spain. .,Departmento de Química, Universitat Politècnica de València, Camino de Vera s/n, 46022, València, Spain. .,CIBER de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Spain.
| |
Collapse
|
63
|
Ruditskiy A, Xia Y. Toward the Synthesis of Sub-15 nm Ag Nanocubes with Sharp Corners and Edges: The Roles of Heterogeneous Nucleation and Surface Capping. J Am Chem Soc 2016; 138:3161-7. [DOI: 10.1021/jacs.5b13163] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aleksey Ruditskiy
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Younan Xia
- School
of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- The
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| |
Collapse
|
64
|
Su L, Yuan H, Lu G, Rocha S, Orrit M, Hofkens J, Uji-i H. Super-resolution
Localization and Defocused Fluorescence
Microscopy on Resonantly Coupled Single-Molecule, Single-Nanorod Hybrids. ACS NANO 2016; 10:2455-66. [PMID: 26815168 PMCID: PMC4849802 DOI: 10.1021/acsnano.5b07294] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 01/27/2016] [Indexed: 05/26/2023]
Abstract
![]()
Optical antennas made of metallic
nanostructures dramatically enhance
single-molecule fluorescence to boost the detection sensitivity. Moreover,
emission properties detected at the optical far field are dictated
by the antenna. Here we study the emission from molecule–antenna
hybrids by means of super-resolution localization and defocused imaging.
Whereas gold nanorods make single-crystal violet molecules in the
tip’s vicinity visible in fluorescence, super-resolution localization
on the enhanced molecular fluorescence reveals geometrical centers
of the nanorod antenna instead. Furthermore, emission angular distributions
of dyes linked to the nanorod surface resemble that of nanorods in
defocused imaging. The experimental observations are consistent with
numerical calculations using the finite-difference time-domain method.
Collapse
Affiliation(s)
- Liang Su
- Department
of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Haifeng Yuan
- Department
of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Gang Lu
- Department
of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Susana Rocha
- Department
of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Michel Orrit
- LION,
Huygens-Kamerlingh Onnes Laboratory, Leiden
University, Niels Bohrweg
2, 2300RA Leiden, The Netherlands
| | - Johan Hofkens
- Department
of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
- Nano-Science
Center, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Hiroshi Uji-i
- Department
of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
- Research
Institute for Electronic Science, Hokkaido
University, N20W10, Kita-Ward, 001-0020 Sapporo, Japan
| |
Collapse
|
65
|
Zhang Z, Fang Y, Wang W, Chen L, Sun M. Propagating Surface Plasmon Polaritons: Towards Applications for Remote-Excitation Surface Catalytic Reactions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2016; 3:1500215. [PMID: 27774380 PMCID: PMC5061028 DOI: 10.1002/advs.201500215] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 07/10/2015] [Indexed: 05/28/2023]
Abstract
Plasmonics is a well-established field, exploiting the interaction of light and metals at the nanoscale; with the help of surface plasmon polaritons, remote-excitation can also be observed by using silver or gold plasmonic waveguides. Recently, plasmonic catalysis was established as a new exciting platform for heterogeneous catalytic reactions. Recent reports present remote-excitation surface catalytic reactions as a route to enhance the rate of chemical reactions, and offer a pathway to control surface catalytic reactions. In this review, we focus on recent advanced reports on silver plasmonic waveguide for remote-excitation surface catalytic reactions. First, the synthesis methods and characterization techniques of sivelr nanowire plasmonic waveguides are summarized, and the properties and physical mechanisms of plasmonic waveguides are presented in detail. Then, the applications of plasmonic waveguides including remote excitation fluorescence and SERS are introduced, and we focus on the field of remote-excitation surface catalytic reactions. Finally, forecasts are made for possible future applications for the remote-excitation surface catalysis by plasmonic waveguides in living cells.
Collapse
Affiliation(s)
- Zhenglong Zhang
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P.R. China; Leibniz Institute of Photonic Technology Albert-Einstein-Str. 907745 Jena Germany
| | - Yurui Fang
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P.R. China; Division of Bionanophotonics Department of Applied Physics Chalmers University of Technology Gothenburg SE-412 96 Sweden
| | - Wenhui Wang
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P.R. China; School of Science Xi'an Jiaotong University Xi'an 710049 China
| | - Li Chen
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P.R. China; Material Science and Engineering University of California San Diego CA 92093 USA
| | - Mengtao Sun
- Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 P.R. China
| |
Collapse
|
66
|
Messina GC, Dipalo M, La Rocca R, Zilio P, Caprettini V, Proietti Zaccaria R, Toma A, Tantussi F, Berdondini L, De Angelis F. Spatially, Temporally, and Quantitatively Controlled Delivery of Broad Range of Molecules into Selected Cells through Plasmonic Nanotubes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:7145-9. [PMID: 26445223 DOI: 10.1002/adma.201503252] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 08/27/2015] [Indexed: 05/24/2023]
Abstract
A Universal plasmonic/microfluidic platform for spatial and temporal controlled intracellular delivery is described. The system can inject/transfect the desired amount of molecules with an efficacy close to 100%. Moreover, it is highly scalable from single cells to large ensembles without administering the molecules to an extracellular bath. The latter enables quantitative control over the amount of injected molecules.
Collapse
Affiliation(s)
| | - Michele Dipalo
- Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genova, Italy
| | - Rosanna La Rocca
- Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genova, Italy
| | | | | | | | - Andrea Toma
- Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genova, Italy
| | | | - Luca Berdondini
- Istituto Italiano di Tecnologia, Via Morego 30, 16163, Genova, Italy
| | | |
Collapse
|
67
|
La Rocca R, Messina GC, Dipalo M, Shalabaeva V, De Angelis F. Out-of-Plane Plasmonic Antennas for Raman Analysis in Living Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:4632-7. [PMID: 26114644 DOI: 10.1002/smll.201500891] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 05/18/2015] [Indexed: 05/25/2023]
Abstract
Out-of-plane plasmonic nanoantennas protruding from the substrate are exploited to perform very sensitive surface enhanced Raman scattering analysis of living cells. Cells cultured on three-dimensional surfaces exhibit tight adhesion with nanoantenna tips where the plasmonic hot-spot resides. This fact provides observable cell adhesion sites combined with high plasmonic enhancement, resulting in an ideal system for Raman investigation of cell membranes.
Collapse
Affiliation(s)
- Rosanna La Rocca
- Istituto Italiano di Tecnologia, via Morego 30, 16163, Genoa, Italy
| | | | - Michele Dipalo
- Istituto Italiano di Tecnologia, via Morego 30, 16163, Genoa, Italy
| | | | | |
Collapse
|
68
|
Mayer M, Scarabelli L, March K, Altantzis T, Tebbe M, Kociak M, Bals S, García
de Abajo FJ, Fery A, Liz-Marzán LM. Controlled Living Nanowire Growth: Precise Control over the Morphology and Optical Properties of AgAuAg Bimetallic Nanowires. NANO LETTERS 2015; 15:5427-37. [PMID: 26134470 PMCID: PMC4538453 DOI: 10.1021/acs.nanolett.5b01833] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Inspired by the concept of living polymerization reaction, we are able to produce silver-gold-silver nanowires with a precise control over their total length and plasmonic properties by establishing a constant silver deposition rate on the tips of penta-twinned gold nanorods used as seed cores. Consequently, the length of the wires increases linearly in time. Starting with ∼210 nm × 32 nm gold cores, we produce nanowire lengths up to several microns in a highly controlled manner, with a small self-limited increase in thickness of ∼4 nm, corresponding to aspect ratios above 100, whereas the low polydispersity of the product allows us to detect up to nine distinguishable plasmonic resonances in a single colloidal solution. We analyze the spatial distribution and the nature of the plasmons by electron energy loss spectroscopy and obtain excellent agreement between measurements and electromagnetic simulations, clearly demonstrating that the presence of the gold core plays a marginal role, except for relatively short wires or high-energy modes.
Collapse
Affiliation(s)
- Martin Mayer
- Physical Chemistry II, University
of Bayreuth, Universitätsstraße
30, 95440 Bayreuth, Germany
| | | | - Katia March
- Laboratoire de Physique des Solides CNRS/UMR8502, University Paris-Sud, Bâtiment 510, Orsay 91405, France
| | - Thomas Altantzis
- EMAT, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - Moritz Tebbe
- Physical Chemistry II, University
of Bayreuth, Universitätsstraße
30, 95440 Bayreuth, Germany
| | - Mathieu Kociak
- Laboratoire de Physique des Solides CNRS/UMR8502, University Paris-Sud, Bâtiment 510, Orsay 91405, France
| | - Sara Bals
- EMAT, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium
| | - F. Javier García
de Abajo
- ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860 Castelldefels (Barcelona), Spain
- ICREA-Institució Catalana de Recerca i Estudis
Avançats, Passeig
Lluís Companys, 23, 08010 Barcelona, Spain
| | - Andreas Fery
- Physical Chemistry II, University
of Bayreuth, Universitätsstraße
30, 95440 Bayreuth, Germany
| | - Luis M. Liz-Marzán
- CIC biomaGUNE, Paseo de Miramón 182, 20009 Donostia—San Sebastián, Spain
- Ikerbasque, Basque Foundation
for Science, 48013 Bilbao, Spain
- E-mail:
| |
Collapse
|
69
|
Li YJ, Xiong X, Zou CL, Ren XF, Zhao YS. One-Dimensional Dielectric/Metallic Hybrid Materials for Photonic Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:3728-3743. [PMID: 25963844 DOI: 10.1002/smll.201500199] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/08/2015] [Indexed: 06/04/2023]
Abstract
Explorations of 1D nanostructures have led to great progress in the area of nanophotonics in the past decades. Based on either dielectric or metallic materials, a variety of 1D photonic devices have been developed, such as nanolasers, waveguides, optical switches, and routers. What's interesting is that these dielectric systems enjoy low propagation losses and usually possess active optical performance, but they have a diffraction-limited field confinement. Alternatively, metallic systems can guide light on deep subwavelength scales, but they suffer from high metallic absorption and can work as passive devices only. Thus, the idea to construct a hybrid system that combines the merits of both dielectric and metallic materials was proposed. To date, unprecedented optical properties have been achieved in various 1D hybrid systems, which manifest great potential for functional nanophotonic devices. Here, the focus is on recent advances in 1D dielectric/metallic hybrid systems, with a special emphasis on novel structure design, rational fabrication techniques, unique performance, as well as their wide application in photonic components. Gaining a better understanding of hybrid systems would benefit the design of nanophotonic components aimed at optical information processing.
Collapse
Affiliation(s)
- Yong Jun Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, Institute of Chemistry Chinese Academy of Sciences, Beijing, 100190, PR China
| | - Xiao Xiong
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, PR China
- Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, PR China
| | - Chang-Ling Zou
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, PR China
- Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, PR China
| | - Xi Feng Ren
- Key Laboratory of Quantum Information, University of Science and Technology of China, Hefei, 230026, PR China
- Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, 230026, PR China
| | - Yong Sheng Zhao
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, Institute of Chemistry Chinese Academy of Sciences, Beijing, 100190, PR China
| |
Collapse
|
70
|
Li H, Yang Q, Li G, Li M, Wang S, Song Y. Splitting a droplet for femtoliter liquid patterns and single cell isolation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:9060-5. [PMID: 25761507 DOI: 10.1021/am509177s] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Well-defined microdroplet generation has attracted great interest, which is important for the high-resolution patterning and matrix distribution for chemical reactions and biological assays. By sliding a droplet on a patterned superhydrophilic/superhydrophobic substrate, tiny microdroplet arrays low to femtoliter were achieved with uniform volume and composition. Using this method, cells were successfully isolated, resulting in a single cell array. The droplet-splitting method is facile, sample-effective, and low-cost, which will be of great potential for the development of microdroplet arrays for biological analysis as well as patterning system and devices.
Collapse
Affiliation(s)
- Huizeng Li
- ‡Beijing National Laboratory for Molecular Science (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- §University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Qiang Yang
- ‡Beijing National Laboratory for Molecular Science (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- §University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Guannan Li
- ‡Beijing National Laboratory for Molecular Science (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- §University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Mingzhu Li
- ‡Beijing National Laboratory for Molecular Science (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Shutao Wang
- ‡Beijing National Laboratory for Molecular Science (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| | - Yanlin Song
- ‡Beijing National Laboratory for Molecular Science (BNLMS), Key Laboratory of Green Printing, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
| |
Collapse
|
71
|
Li M, Zou CL, Ren XF, Xiong X, Cai YJ, Guo GP, Tong LM, Guo GC. Transmission of photonic quantum polarization entanglement in a nanoscale hybrid plasmonic waveguide. NANO LETTERS 2015; 15:2380-2384. [PMID: 25775140 DOI: 10.1021/nl504636x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Photonic quantum technologies have been extensively studied in quantum information science, owing to the high-speed transmission and outstanding low-noise properties of photons. However, applications based on photonic entanglement are restricted due to the diffraction limit. In this work, we demonstrate for the first time the maintaining of quantum polarization entanglement in a nanoscale hybrid plasmonic waveguide composed of a fiber taper and a silver nanowire. The transmitted state throughout the waveguide has a fidelity of 0.932 with the maximally polarization entangled state Φ(+). Furthermore, the Clauser, Horne, Shimony, and Holt (CHSH) inequality test performed, resulting in value of 2.495 ± 0.147 > 2, demonstrates the violation of the hidden variable model. Because the plasmonic waveguide confines the effective mode area to subwavelength scale, it can bridge nanophotonics and quantum optics and may be used as near-field quantum probe in a quantum near-field micro/nanoscope, which can realize high spatial resolution, ultrasensitive, fiber-integrated, and plasmon-enhanced detection.
Collapse
Affiliation(s)
- Ming Li
- †Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, People's Republic of China
| | - Chang-Ling Zou
- †Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, People's Republic of China
| | - Xi-Feng Ren
- †Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, People's Republic of China
| | - Xiao Xiong
- †Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, People's Republic of China
| | - Yong-Jing Cai
- †Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, People's Republic of China
| | - Guo-Ping Guo
- †Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, People's Republic of China
| | - Li-Min Tong
- §State Key Laboratory of Modern Optical Instrumentation, Department of Optical Engineering, Zhejiang University, Hangzhou 310027, China
| | - Guang-Can Guo
- †Key Laboratory of Quantum Information, University of Science and Technology of China, CAS, Hefei, 230026, People's Republic of China
| |
Collapse
|
72
|
Kang JW, So PTC, Dasari RR, Lim DK. High resolution live cell Raman imaging using subcellular organelle-targeting SERS-sensitive gold nanoparticles with highly narrow intra-nanogap. NANO LETTERS 2015; 15:1766-72. [PMID: 25646716 PMCID: PMC4356631 DOI: 10.1021/nl504444w] [Citation(s) in RCA: 168] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We report a method to achieve high speed and high resolution live cell Raman images using small spherical gold nanoparticles with highly narrow intra-nanogap structures responding to NIR excitation (785 nm) and high-speed confocal Raman microscopy. The three different Raman-active molecules placed in the narrow intra-nanogap showed a strong and uniform Raman intensity in solution even under transient exposure time (10 ms) and low input power of incident laser (200 μW), which lead to obtain high-resolution single cell image within 30 s without inducing significant cell damage. The high resolution Raman image showed the distributions of gold nanoparticles for their targeted sites such as cytoplasm, mitochondria, or nucleus. The high speed Raman-based live cell imaging allowed us to monitor rapidly changing cell morphologies during cell death induced by the addition of highly toxic KCN solution to cells. These results strongly suggest that the use of SERS-active nanoparticle can greatly improve the current temporal resolution and image quality of Raman-based cell images enough to obtain the detailed cell dynamics and/or the responses of cells to potential drug molecules.
Collapse
Affiliation(s)
- Jeon Woong Kang
- Laser Biomedical Research Center, G. R. Harrison Spectroscopy Laboratory, Cambridge, Massachusetts 02139, United States
| | - Peter T. C. So
- Department of Mechanical and Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ramachandra R. Dasari
- Laser Biomedical Research Center, G. R. Harrison Spectroscopy Laboratory, Cambridge, Massachusetts 02139, United States
| | - Dong-Kwon Lim
- Department of BIN Fusion Technology, Graduate School of Chonbuk National University, Jeonju, South Korea
- Corresponding Author:
| |
Collapse
|
73
|
Visualization of molecular fluorescence point spread functions via remote excitation switching fluorescence microscopy. Nat Commun 2015; 6:6287. [PMID: 25687887 PMCID: PMC4339893 DOI: 10.1038/ncomms7287] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 01/14/2015] [Indexed: 01/31/2023] Open
Abstract
The enhancement of molecular absorption, emission and scattering processes by coupling to surface plasmon polaritons on metallic nanoparticles is a key issue in plasmonics for applications in (bio)chemical sensing, light harvesting and photocatalysis. Nevertheless, the point spread functions for single-molecule emission near metallic nanoparticles remain difficult to characterize due to fluorophore photodegradation, background emission and scattering from the plasmonic structure. Here we overcome this problem by exciting fluorophores remotely using plasmons propagating along metallic nanowires. The experiments reveal a complex array of single-molecule fluorescence point spread functions that depend not only on nanowire dimensions but also on the position and orientation of the molecular transition dipole. This work has consequences for both single-molecule regime-sensing and super-resolution imaging involving metallic nanoparticles and opens the possibilities for fast size sorting of metallic nanoparticles, and for predicting molecular orientation and binding position on metallic nanoparticles via far-field optical imaging. Plasmonic nanoparticles can dramatically enhance the optical properties of molecules but background scattering is a limiting factor. Su et al. use remote excitation by plasmons on nanowires to better access single fluorophore point spread functions for improved sensing and super-resolution imaging.
Collapse
|
74
|
Frederiksen RS, Alarcon-Llado E, Madsen MH, Rostgaard KR, Krogstrup P, Vosch T, Nygård J, Fontcuberta I Morral A, Martinez KL. Modulation of fluorescence signals from biomolecules along nanowires due to interaction of light with oriented nanostructures. NANO LETTERS 2015; 15:176-81. [PMID: 25426704 DOI: 10.1021/nl503344y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
High aspect ratio nanostructures have gained increasing interest as highly sensitive platforms for biosensing. Here, well-defined biofunctionalized vertical indium arsenide nanowires are used to map the interaction of light with nanowires depending on their orientation and the excitation wavelength. We show how nanowires act as antennas modifying the light distribution and the emitted fluorescence. This work highlights an important optical phenomenon in quantitative fluorescence studies and constitutes an important step for future studies using such nanostructures.
Collapse
Affiliation(s)
- Rune S Frederiksen
- Bio-Nanotechnology and Nanomedicine Laboratory, Department of Chemistry & Nano-Science Center, University of Copenhagen , Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | | | | | | | | | | | | | | | | |
Collapse
|
75
|
Wuytens PC, Subramanian AZ, De Vos WH, Skirtach AG, Baets R. Gold nanodome-patterned microchips for intracellular surface-enhanced Raman spectroscopy. Analyst 2015; 140:8080-7. [DOI: 10.1039/c5an01782c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Top-down patterned gold nanodome microchips are taken up by living cells and serve as a uniform and reproducible sensor for intracellular surface-enhanced Raman scattering.
Collapse
Affiliation(s)
- Pieter C. Wuytens
- Photonics Research Group
- INTEC Department
- Ghent University-imec
- Ghent
- Belgium
| | | | - Winnok H. De Vos
- Department of Molecular Biotechnology
- Ghent University
- Ghent
- Belgium
- Laboratory of Cell Biology and Histology
| | - Andre G. Skirtach
- Department of Molecular Biotechnology
- Ghent University
- Ghent
- Belgium
- Center for Nano and Biophotonics
| | - Roel Baets
- Photonics Research Group
- INTEC Department
- Ghent University-imec
- Ghent
- Belgium
| |
Collapse
|