1
|
Hu S, Huang J, Arul R, Sánchez-Iglesias A, Xiong Y, Liz-Marzán LM, Baumberg JJ. Robust consistent single quantum dot strong coupling in plasmonic nanocavities. Nat Commun 2024; 15:6835. [PMID: 39122720 PMCID: PMC11315915 DOI: 10.1038/s41467-024-51170-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024] Open
Abstract
Strong coupling between a single quantum emitter and an optical cavity (at rate Ω) accesses fundamental quantum optics and provides an essential building block for photonic quantum technologies. However, the minimum mode volume of conventional dielectric cavities restricts their operation to cryogenic temperature for strong coupling. Here we harness surface self-assembly to make deterministic strong coupling at room temperature using CdSe/CdS quantum dots (QDs) in nanoparticle-on-mirror (NPoM) plasmonic nanocavities. We achieve a fabrication yield of ~70% for single QD strong coupling by optimizing their size and nano-assembly. A clear and reliable Rabi splitting is observed both in the scattering of each nanocavity and their photoluminescence, which are however not equal. Integrating these quantum elements with electrical pumping allows demonstration of strong coupling in their electroluminescence. This advance provides a straightforward way to achieve practical quantum devices at room temperature, and opens up exploration of their nonlinear, electrical, and quantum correlation properties.
Collapse
Affiliation(s)
- Shu Hu
- Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, UK.
- Department of Physics, College of Physical Science and Technology, Xiamen University, Xiamen, China.
| | - Junyang Huang
- Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Rakesh Arul
- Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Ana Sánchez-Iglesias
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, Spain
| | - Yuling Xiong
- Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Luis M Liz-Marzán
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Basque Research and Technology Alliance (BRTA), Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, Bilbao, Spain
| | - Jeremy J Baumberg
- Nanophotonics Centre, Cavendish Laboratory, University of Cambridge, Cambridge, UK.
| |
Collapse
|
2
|
Kumar L, Nandan B, Sarkar S, König TAF, Pohl D, Tsuda T, Zainuddin MSB, Humenik M, Scheibel T, Horechyy A. Enhanced photocatalytic performance of coaxially electrospun titania nanofibers comprising yolk-shell particles. J Colloid Interface Sci 2024; 674:560-575. [PMID: 38945024 DOI: 10.1016/j.jcis.2024.06.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 05/30/2024] [Accepted: 06/18/2024] [Indexed: 07/02/2024]
Abstract
The present paper reports the fabrication of novel types of hybrid fibrous photocatalysts by combining block copolymer (BCP) templating, sol-gel processing, and coaxial electrospinning techniques. Coaxial electrospinning produces core-shell nanofibers (NFs), which are converted into hollow porous TiO2 NFs using an oxidative calcination step. Hybrid BCP micelles comprising a single plasmonic nanoparticle (NP) in their core and thereof derived silica-coated core-shell particles are utilized as precursors to generate yolk-shell type particulate inclusions in photocatalytically active NFs. The catalytic and photocatalytic activity of calcined NFs comprising different types of yolk-shell particles is systematically investigated and compared. Interestingly, calcined NFs comprising silica-coated yolk-shells demonstrate enhanced catalytic and photocatalytic performance despite the presence of silica shell separating plasmonic NP from the TiO2 matrix. Electromagnetic simulations indicate that this enhancement is caused by a localized surface plasmon resonance and a confinement effect in silica-coated yolk-shells embedded in porous TiO2 NFs. Utilization of the coaxially electrospun TiO2 NFs in combination with yolk-shells comprising plasmonic NPs reveals to be a potent method for the photocatalytic decomposition of numerous pollutants. It is worth noting that this study stands as the first occurrence of combining yolk-shells (Au@void@SiO2) with porous electrospun NFs (TiO2) for photocatalytic purposes and gaining an understanding of plasmon and confinement effects for photocatalytic performance. This approach represents a promising route for fabricating highly active and up-scalable fibrous photocatalytic systems.
Collapse
Affiliation(s)
- Labeesh Kumar
- Leibniz-Institut für Polymerforschung Dresden e.V., Institute for Physical Chemistry and Polymer Physics, Hohe Straße 6, 01069 Dresden, Germany.
| | - Bhanu Nandan
- Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Swagato Sarkar
- Leibniz-Institut für Polymerforschung Dresden e.V., Institute for Physical Chemistry and Polymer Physics, Hohe Straße 6, 01069 Dresden, Germany
| | - Tobias A F König
- Leibniz-Institut für Polymerforschung Dresden e.V., Institute for Physical Chemistry and Polymer Physics, Hohe Straße 6, 01069 Dresden, Germany; Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, Helmholtzstraße 18, 01062 Dresden, Germany; Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Bergstraße 66, 01069 Dresden, Germany
| | - Darius Pohl
- Dresden Center for Nanoanalysis (DCN), Center for Advancing Electronics Dresden (cfaed), TUD Dresden University of Technology, 01062 Dresden, Germany
| | - Takuya Tsuda
- Leibniz-Institut für Polymerforschung Dresden e.V., Institute for Physical Chemistry and Polymer Physics, Hohe Straße 6, 01069 Dresden, Germany
| | - Muhammad S B Zainuddin
- Department of Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
| | - Martin Humenik
- Department of Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
| | - Thomas Scheibel
- Department of Biomaterials, University of Bayreuth, Prof.-Rüdiger-Bormann-Str. 1, 95447 Bayreuth, Germany
| | - Andriy Horechyy
- Leibniz-Institut für Polymerforschung Dresden e.V., Institute for Physical Chemistry and Polymer Physics, Hohe Straße 6, 01069 Dresden, Germany.
| |
Collapse
|
3
|
Tang J, Ji C, Lu X, Cao H, Ling Y, Wu Y, Qian L, He Y, Song B, Wang H. DNA Origami Plasmonic Nanoantenna for Programmable Biosensing of Multiple Cytokines in Cancer Immunotherapy. Anal Chem 2024; 96:9684-9692. [PMID: 38804540 DOI: 10.1021/acs.analchem.4c01626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Herein, we report a DNA origami plasmonic nanoantenna for the programmable surface-enhanced Raman scattering (SERS) detection of cytokine release syndrome (CRS)-associated cytokines (e.g., tumor necrosis factor-α (TNF-α) and interferon-γ (IFN-γ)) in cancer immunotherapy. Typically, the nanoantenna was made of self-assembled DNA origami nanotubes (diameter: ∼19 nm; length: ∼90 nm) attached to a silver nanoparticle-modified silicon wafer (AgNP/Si). Each DNA origami nanotube contains one miniature gold nanorod (AuNR) inside (e.g., length: ∼35 nm; width: ∼7 nm). Intriguingly, TNF-α and IFN-γ logically regulate the opening of the nanotubes and the dissociation of the AuNRs from the origami structure upon binding to their corresponding aptamers. On this basis, we constructed a complete set of Boolean logic gates that read cytokine molecules as inputs and return changes in Raman signals as outputs. Significantly, we demonstrated that the presented system enables the quantification of TNF-α and IFN-γ in the serum of tumor-bearing mice receiving different types of immunotherapies (e.g., PD1/PD-L1 complex inhibitors and STING agonists). The sensing results are consistent with those of the ELISA. This strategy fills a gap in the use of DNA origami for the detection of multiple cytokines in real systems.
Collapse
Affiliation(s)
- Jie Tang
- Suzhou Key Laboratory of Nanotechnology and Biomedicine, Institute of Functional Nano and Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Chen Ji
- Suzhou Key Laboratory of Nanotechnology and Biomedicine, Institute of Functional Nano and Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Xing Lu
- Suzhou Key Laboratory of Nanotechnology and Biomedicine, Institute of Functional Nano and Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Haiting Cao
- Suzhou Key Laboratory of Nanotechnology and Biomedicine, Institute of Functional Nano and Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Yufan Ling
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China
| | - Yuqi Wu
- Suzhou Key Laboratory of Nanotechnology and Biomedicine, Institute of Functional Nano and Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Lulu Qian
- Suzhou Key Laboratory of Nanotechnology and Biomedicine, Institute of Functional Nano and Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Yao He
- Suzhou Key Laboratory of Nanotechnology and Biomedicine, Institute of Functional Nano and Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Bin Song
- Suzhou Key Laboratory of Nanotechnology and Biomedicine, Institute of Functional Nano and Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Houyu Wang
- Suzhou Key Laboratory of Nanotechnology and Biomedicine, Institute of Functional Nano and Soft Materials (FUNSOM), and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| |
Collapse
|
4
|
Huang J, Ojambati OS, Climent C, Cuartero-Gonzalez A, Elliott E, Feist J, Fernández-Domínguez AI, Baumberg JJ. Influence of Quadrupolar Molecular Transitions within Plasmonic Cavities. ACS NANO 2024; 18:14487-14495. [PMID: 38787356 PMCID: PMC11155255 DOI: 10.1021/acsnano.4c01368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 05/02/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024]
Abstract
Optical nanocavities have revolutionized the manipulation of radiative properties of molecular and semiconductor emitters. Here, we investigate the amplified photoluminescence arising from exciting a dark transition of β-carotene molecules embedded within plasmonic nanocavities. Integrating a molecular monolayer into nanoparticle-on-mirror nanostructures unveils enhancements surpassing 4 orders of magnitude in the initially light-forbidden excitation. Such pronounced enhancements transcend conventional dipolar mechanisms, underscoring the presence of alternative enhancement pathways. Notably, Fourier-plane scattering spectroscopy shows that the photoluminescence excitation resonance aligns with a higher-order plasmonic cavity mode, which supports strong field gradients. Combining quantum chemistry calculations with electromagnetic simulations reveals an important interplay between the Franck-Condon quadrupole and Herzberg-Teller dipole contributions in governing the absorption characteristics of this dark transition. In contrast to free space, the quadrupole moment plays a significant role in photoluminescence enhancement within nanoparticle-on-mirror cavities. These findings provide an approach to access optically inactive transitions, promising advancements in spectroscopy and sensing applications.
Collapse
Affiliation(s)
- Junyang Huang
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, JJ Thompson Avenue, University of Cambridge, Cambridge CB3 0HE, U.K.
| | - Oluwafemi S. Ojambati
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, JJ Thompson Avenue, University of Cambridge, Cambridge CB3 0HE, U.K.
| | - Clàudia Climent
- Departamento
de Física Teórica de la Materia Condensada and Condensed
Matter Physics Center (IFIMAC), Universidad
Autónoma de Madrid, Madrid E-28049, Spain
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Alvaro Cuartero-Gonzalez
- Departamento
de Física Teórica de la Materia Condensada and Condensed
Matter Physics Center (IFIMAC), Universidad
Autónoma de Madrid, Madrid E-28049, Spain
- Mechanical
Engineering Department, ICAI, Universidad
Pontificia Comillas, Madrid 28015, Spain
| | - Eoin Elliott
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, JJ Thompson Avenue, University of Cambridge, Cambridge CB3 0HE, U.K.
| | - Johannes Feist
- Departamento
de Física Teórica de la Materia Condensada and Condensed
Matter Physics Center (IFIMAC), Universidad
Autónoma de Madrid, Madrid E-28049, Spain
| | - Antonio I. Fernández-Domínguez
- Departamento
de Física Teórica de la Materia Condensada and Condensed
Matter Physics Center (IFIMAC), Universidad
Autónoma de Madrid, Madrid E-28049, Spain
| | - Jeremy J. Baumberg
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, JJ Thompson Avenue, University of Cambridge, Cambridge CB3 0HE, U.K.
| |
Collapse
|
5
|
Liu R, Geng M, Ai J, Fan X, Liu Z, Lu YW, Kuang Y, Liu JF, Guo L, Wu L. Deterministic positioning and alignment of a single-molecule exciton in plasmonic nanodimer for strong coupling. Nat Commun 2024; 15:4103. [PMID: 38755130 PMCID: PMC11099047 DOI: 10.1038/s41467-024-46831-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/12/2024] [Indexed: 05/18/2024] Open
Abstract
Experimental realization of strong coupling between a single exciton and plasmons remains challenging as it requires deterministic positioning of the single exciton and alignment of its dipole moment with the plasmonic fields. This study aims to combine the host-guest chemistry approach with the cucurbit[7]uril-mediated active self-assembly to precisely integrate a single methylene blue molecule in an Au nanodimer at the deterministic position (gap center of the nanodimer) with the maximum electric field (EFmax) and perfectly align its transition dipole moment with the EFmax, yielding a large spectral Rabi splitting of 116 meV for a single-molecule exciton-matching the analytical model and numerical simulations. Statistical analysis of vibrational spectroscopy and dark-field scattering spectra confirm the realization of the single exciton strong coupling at room temperature. Our work may suggest an approach for achieving the strong coupling between a deterministic single exciton and plasmons, contributing to the development of room-temperature single-qubit quantum devices.
Collapse
Affiliation(s)
- Renming Liu
- School of Physics and Electronics, International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Henan University, Kaifeng, 475004, China.
- Institute of Quantum Materials and Physics, Henan Academy of Sciences, Zhengzhou, 450046, China.
| | - Ming Geng
- School of Physics and Electronics, International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Henan University, Kaifeng, 475004, China
| | - Jindong Ai
- School of Physics and Electronics, International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Henan University, Kaifeng, 475004, China
| | - Xinyi Fan
- School of Physics and Electronics, International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Henan University, Kaifeng, 475004, China
| | - Zhixiang Liu
- School of Physics and Electronics, International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Henan University, Kaifeng, 475004, China
| | - Yu-Wei Lu
- Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (Guangdong), Shenzhen, 518045, China
| | - Yanmin Kuang
- School of Physics and Electronics, International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Henan University, Kaifeng, 475004, China
| | - Jing-Feng Liu
- College of Electronic Engineering, South China Agricultural University, Guangzhou, 510642, China.
| | - Lijun Guo
- School of Physics and Electronics, International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Henan University, Kaifeng, 475004, China.
| | - Lin Wu
- Department of Science, Mathematics and Technology, Singapore University of Technology and Design, 8 Somapah Road, Singapore, 487372, Republic of Singapore.
- Institute of High Performance Computing, Agency for Science, Technology, and Research (A*STAR), 1 Fusionopolis Way, No. 16-16 Connexis, Singapore, 138632, Republic of Singapore.
| |
Collapse
|
6
|
Xiang B, Xiong W. Molecular Polaritons for Chemistry, Photonics and Quantum Technologies. Chem Rev 2024; 124:2512-2552. [PMID: 38416701 PMCID: PMC10941193 DOI: 10.1021/acs.chemrev.3c00662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 01/22/2024] [Accepted: 02/08/2024] [Indexed: 03/01/2024]
Abstract
Molecular polaritons are quasiparticles resulting from the hybridization between molecular and photonic modes. These composite entities, bearing characteristics inherited from both constituents, exhibit modified energy levels and wave functions, thereby capturing the attention of chemists in the past decade. The potential to modify chemical reactions has spurred many investigations, alongside efforts to enhance and manipulate optical responses for photonic and quantum applications. This Review centers on the experimental advances in this burgeoning field. Commencing with an introduction of the fundamentals, including theoretical foundations and various cavity architectures, we discuss outcomes of polariton-modified chemical reactions. Furthermore, we navigate through the ongoing debates and uncertainties surrounding the underpinning mechanism of this innovative method of controlling chemistry. Emphasis is placed on gaining a comprehensive understanding of the energy dynamics of molecular polaritons, in particular, vibrational molecular polaritons─a pivotal facet in steering chemical reactions. Additionally, we discuss the unique capability of coherent two-dimensional spectroscopy to dissect polariton and dark mode dynamics, offering insights into the critical components within the cavity that alter chemical reactions. We further expand to the potential utility of molecular polaritons in quantum applications as well as precise manipulation of molecular and photonic polarizations, notably in the context of chiral phenomena. This discussion aspires to ignite deeper curiosity and engagement in revealing the physics underpinning polariton-modified molecular properties, and a broad fascination with harnessing photonic environments to control chemistry.
Collapse
Affiliation(s)
- Bo Xiang
- Department
of Chemistry, School of Science and Research Center for Industries
of the Future, Westlake University, Hangzhou, Zhejiang 310030, China
| | - Wei Xiong
- Department
of Chemistry and Biochemistry, University
of California, San Diego, California 92126, United States
- Materials
Science and Engineering Program, University
of California, San Diego, California 92126, United States
- Department
of Electrical and Computer Engineering, University of California, San
Diego, California 92126, United States
| |
Collapse
|
7
|
Wang P, Liang Z, Li Z, Wang D, Ma Q. Plasmonic nanocavity-modulated electrochemiluminescence sensor for gastric cancer exosomal miRNA detection. Biosens Bioelectron 2024; 245:115847. [PMID: 37995625 DOI: 10.1016/j.bios.2023.115847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/03/2023] [Accepted: 11/14/2023] [Indexed: 11/25/2023]
Abstract
Plasmonic nanocavity possessing highly light field confinement and electromagnetic field enhancement can concentrate and enhance the luminescence signal. The plasmonic nanocavity has the great potential value in biosensing research and improve analytical sensitivity. In this work, we constructed a plasmonic nanocavity between circular Au nanoplate-film and spherical Au nanoparticle with tetrahedral DNA nanostructures. The nanocavity structure can regulate the local density of optical states and provide the field restriction to enhance the spontaneous ECL radiation of PEDOT-S dots. Additionally, Au nanoparticle acted as nanoantenna which localized and modulated ECL to directional emission. Because the plasmonic nanocavity effectively collected and redistributed ECL signal, the emission was enhanced by 5.9 times with polarized characteristics. The proposed plasmonic nanocavity-based ECL sensor was further used to detect exosomal miRNA-223-3p in ascites. The detection results indicated the novel sensing strategy can assist early diagnosis of peritoneal metastasis of gastric cancer.
Collapse
Affiliation(s)
- Peilin Wang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Zihui Liang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Zhenrun Li
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Dongyu Wang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China
| | - Qiang Ma
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun, 130012, China.
| |
Collapse
|
8
|
Zhang C, Hu H, Ma C, Li Y, Wang X, Li D, Movsesyan A, Wang Z, Govorov A, Gan Q, Ding T. Quantum plasmonics pushes chiral sensing limit to single molecules: a paradigm for chiral biodetections. Nat Commun 2024; 15:2. [PMID: 38169462 PMCID: PMC10762144 DOI: 10.1038/s41467-023-42719-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Accepted: 10/19/2023] [Indexed: 01/05/2024] Open
Abstract
Chiral sensing of single molecules is vital for the understanding of chirality and their applications in biomedicine. However, current technologies face severe limitations in achieving single-molecule sensitivity. Here we overcome these limitations by designing a tunable chiral supramolecular plasmonic system made of helical oligoamide sequences (OS) and nanoparticle-on-mirror (NPoM) resonator, which works across the classical and quantum regimes. Our design enhances the chiral sensitivity in the quantum tunnelling regime despite of the reduced local E-field, which is due to the strong Coulomb interactions between the chiral OSs and the achiral NPoMs and the additional enhancement from tunnelling electrons. A minimum of four molecules per single-Au particle can be detected, which allows for the detection of an enantiomeric excess within a monolayer, manifesting great potential for the chiral sensing of single molecules.
Collapse
Affiliation(s)
- Chi Zhang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, 430072, Wuhan, China
| | - Huatian Hu
- Hubei Key Laboratory of Optical Information and Pattern Recognition, Wuhan Institute of Technology, 430205, Wuhan, China
- Center for Biomolecular Nanotechnologies, Istituto Italiano di Tecnologia, Via Barsanti 14, Arnesano, LE, 73010, Italy
| | - Chunmiao Ma
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Yawen Li
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, 430072, Wuhan, China
| | - Xujie Wang
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, 430072, Wuhan, China
| | - Dongyao Li
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - Artur Movsesyan
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 610054, Chengdu, China
- Department of Physics and Astronomy, Ohio University, Athens, OH, 45701, USA
| | - Zhiming Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 610054, Chengdu, China
| | - Alexander Govorov
- Department of Physics and Astronomy, Ohio University, Athens, OH, 45701, USA
| | - Quan Gan
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 430074, Wuhan, China.
| | - Tao Ding
- Key Laboratory of Artificial Micro/Nano Structure of Ministry of Education, School of Physics and Technology, Wuhan University, 430072, Wuhan, China.
| |
Collapse
|
9
|
Schuknecht F, Kołątaj K, Steinberger M, Liedl T, Lohmueller T. Accessible hotspots for single-protein SERS in DNA-origami assembled gold nanorod dimers with tip-to-tip alignment. Nat Commun 2023; 14:7192. [PMID: 37938571 PMCID: PMC10632510 DOI: 10.1038/s41467-023-42943-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 10/27/2023] [Indexed: 11/09/2023] Open
Abstract
The label-free identification of individual proteins from liquid samples by surface-enhanced Raman scattering (SERS) spectroscopy is a highly desirable goal in biomedical diagnostics. However, the small Raman scattering cross-section of most (bio-)molecules requires a means to strongly amplify their Raman signal for successful measurement, especially for single molecules. This amplification can be achieved in a plasmonic hotspot that forms between two adjacent gold nanospheres. However, the small (≈1-2 nm) gaps typically required for single-molecule measurements are not accessible for most proteins. A useful strategy would thus involve dimer structures with gaps large enough to accommodate single proteins, whilst providing sufficient field enhancement for single-molecule SERS. Here, we report on using a DNA origami scaffold for tip-to-tip alignment of gold nanorods with an average gap size of 8 nm. The gaps are accessible to streptavidin and thrombin, which are captured at the plasmonic hotspot by specific anchoring sites on the origami template. The field enhancement achieved for the nanorod dimers is sufficient for single-protein SERS spectroscopy with sub-second integration times. This design for SERS probes composed of DNA origami with accessible hotspots promotes future use for single-molecule biodiagnostics in the near-infrared range.
Collapse
Affiliation(s)
- Francis Schuknecht
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstraße 10, 80539, Munich, Germany
| | - Karol Kołątaj
- Physics Department and CeNS, Ludwig-Maximilians-University Munich, Geschwister-Scholl-Platz 1, 80539, Munich, Germany
- Département de Physique, Université de Fribourg, Chemin du Musée 3, 1700, Fribourg, Switzerland
| | - Michael Steinberger
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstraße 10, 80539, Munich, Germany
| | - Tim Liedl
- Physics Department and CeNS, Ludwig-Maximilians-University Munich, Geschwister-Scholl-Platz 1, 80539, Munich, Germany.
| | - Theobald Lohmueller
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstraße 10, 80539, Munich, Germany.
| |
Collapse
|
10
|
Lee YM, Kim SE, Park JE. Strong coupling in plasmonic metal nanoparticles. NANO CONVERGENCE 2023; 10:34. [PMID: 37470924 PMCID: PMC10359241 DOI: 10.1186/s40580-023-00383-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 07/08/2023] [Indexed: 07/21/2023]
Abstract
The study of strong coupling between light and matter has gained significant attention in recent years due to its potential applications in diverse fields, including artificial light harvesting, ultraefficient polariton lasing, and quantum information processing. Plasmonic cavities are a compelling alternative of conventional photonic resonators, enabling ultracompact polaritonic systems to operate at room temperature. This review focuses on colloidal metal nanoparticles, highlighting their advantages as plasmonic cavities in terms of their facile synthesis, tunable plasmonic properties, and easy integration with excitonic materials. We explore recent examples of strong coupling in single nanoparticles, dimers, nanoparticle-on-a-mirror configurations, and other types of nanoparticle-based resonators. These systems are coupled with an array of excitonic materials, including atomic emitters, semiconductor quantum dots, two-dimensional materials, and perovskites. In the concluding section, we offer perspectives on the future of strong coupling research in nanoparticle systems, emphasizing the challenges and potentials that lie ahead. By offering a thorough understanding of the current state of research in this field, we aim to inspire further investigations and advances in the study of strongly coupled nanoparticle systems, ultimately unlocking new avenues in nanophotonic applications.
Collapse
Affiliation(s)
- Yoon-Min Lee
- Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju, 61005, Korea
| | - Seong-Eun Kim
- Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju, 61005, Korea
| | - Jeong-Eun Park
- Department of Chemistry, Gwangju Institute of Science and Technology, Gwangju, 61005, Korea.
| |
Collapse
|
11
|
Rocchetti S, Ohmann A, Chikkaraddy R, Kang G, Keyser UF, Baumberg JJ. Amplified Plasmonic Forces from DNA Origami-Scaffolded Single Dyes in Nanogaps. NANO LETTERS 2023. [PMID: 37364270 DOI: 10.1021/acs.nanolett.3c01016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Developing highly enhanced plasmonic nanocavities allows direct observation of light-matter interactions at the nanoscale. With DNA origami, the ability to precisely nanoposition single-quantum emitters in ultranarrow plasmonic gaps enables detailed study of their modified light emission. By developing protocols for creating nanoparticle-on-mirror constructs in which DNA nanostructures act as reliable and customizable spacers for nanoparticle binding, we reveal that the simple picture of Purcell-enhanced molecular dye emission is misleading. Instead, we show that the enhanced dipolar dye polarizability greatly amplifies optical forces acting on the facet Au atoms, leading to their rapid destabilization. Using different dyes, we find that emission spectra are dominated by inelastic (Raman) scattering from molecules and metals, instead of fluorescence, with molecular bleaching also not evident despite the large structural rearrangements. This implies that the competition between recombination pathways demands a rethink of routes to quantum optics using plasmonics.
Collapse
Affiliation(s)
- Sara Rocchetti
- Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, England, U.K
| | - Alexander Ohmann
- Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, England, U.K
| | - Rohit Chikkaraddy
- Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, England, U.K
- School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, England, U.K
| | - Gyeongwon Kang
- Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, England, U.K
| | - Ulrich F Keyser
- Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, England, U.K
| | - Jeremy J Baumberg
- Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, England, U.K
| |
Collapse
|
12
|
Zhan P, Peil A, Jiang Q, Wang D, Mousavi S, Xiong Q, Shen Q, Shang Y, Ding B, Lin C, Ke Y, Liu N. Recent Advances in DNA Origami-Engineered Nanomaterials and Applications. Chem Rev 2023; 123:3976-4050. [PMID: 36990451 PMCID: PMC10103138 DOI: 10.1021/acs.chemrev.3c00028] [Citation(s) in RCA: 63] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Indexed: 03/31/2023]
Abstract
DNA nanotechnology is a unique field, where physics, chemistry, biology, mathematics, engineering, and materials science can elegantly converge. Since the original proposal of Nadrian Seeman, significant advances have been achieved in the past four decades. During this glory time, the DNA origami technique developed by Paul Rothemund further pushed the field forward with a vigorous momentum, fostering a plethora of concepts, models, methodologies, and applications that were not thought of before. This review focuses on the recent progress in DNA origami-engineered nanomaterials in the past five years, outlining the exciting achievements as well as the unexplored research avenues. We believe that the spirit and assets that Seeman left for scientists will continue to bring interdisciplinary innovations and useful applications to this field in the next decade.
Collapse
Affiliation(s)
- Pengfei Zhan
- 2nd Physics
Institute, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Andreas Peil
- 2nd Physics
Institute, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - Qiao Jiang
- National
Center for Nanoscience and Technology, No 11, BeiYiTiao Zhongguancun, Beijing 100190, China
| | - Dongfang Wang
- School
of Biomedical Engineering and Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou 215123, China
| | - Shikufa Mousavi
- Department
of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Qiancheng Xiong
- Department
of Cell Biology, Yale School of Medicine, 333 Cedar Street, New Haven, Connecticut 06520, United States
- Nanobiology
Institute, Yale University, 850 West Campus Drive, West Haven, Connecticut 06516, United States
| | - Qi Shen
- Department
of Cell Biology, Yale School of Medicine, 333 Cedar Street, New Haven, Connecticut 06520, United States
- Nanobiology
Institute, Yale University, 850 West Campus Drive, West Haven, Connecticut 06516, United States
- Department
of Molecular Biophysics and Biochemistry, Yale University, 266
Whitney Avenue, New Haven, Connecticut 06511, United States
| | - Yingxu Shang
- National
Center for Nanoscience and Technology, No 11, BeiYiTiao Zhongguancun, Beijing 100190, China
| | - Baoquan Ding
- National
Center for Nanoscience and Technology, No 11, BeiYiTiao Zhongguancun, Beijing 100190, China
| | - Chenxiang Lin
- Department
of Cell Biology, Yale School of Medicine, 333 Cedar Street, New Haven, Connecticut 06520, United States
- Nanobiology
Institute, Yale University, 850 West Campus Drive, West Haven, Connecticut 06516, United States
- Department
of Biomedical Engineering, Yale University, 17 Hillhouse Avenue, New Haven, Connecticut 06511, United States
| | - Yonggang Ke
- Wallace
H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30322, United States
| | - Na Liu
- 2nd Physics
Institute, University of Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
- Max Planck
Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart, Germany
| |
Collapse
|
13
|
Qu Z, Zhou P, Min F, Chen S, Guo M, Huang Z, Ji S, Yan Y, Yin X, Jiang H, Ke Y, Zhao YS, Yan X, Qiao Y, Song Y. Bubble wall confinement-driven molecular assembly toward sub-12 nm and beyond precision patterning. SCIENCE ADVANCES 2023; 9:eadf3567. [PMID: 36921052 PMCID: PMC10017045 DOI: 10.1126/sciadv.adf3567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Patterning is attractive for nanofabrication, electron devices, and bioengineering. However, achieving the molecular-scale patterns to meet the demands of these fields is challenging. Here, we propose a bubble-template molecular printing concept by introducing the ultrathin liquid film of bubble walls to confine the self-assembly of molecules and achieve ultrahigh-precision assembly up to 12 nanometers corresponding to the critical point toward the Newton black film limit. The disjoining pressure describing the intermolecular interaction could predict the highest precision effectively. The symmetric molecules exhibit better reconfiguration capacity and smaller preaggregates than the asymmetric ones, which are helpful in stabilizing the drainage of foam films and construct high-precision patterns. Our results confirm the robustness of the bubble template to prepare molecular-scale patterns, verify the criticality of molecular symmetry to obtain the ultimate precision, and predict the application potential of high-precision organic patterns in hierarchical self-assembly and high-sensitivity sensors.
Collapse
Affiliation(s)
- Zhiyuan Qu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Peng Zhou
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Fanyi Min
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Shengnan Chen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Mengmeng Guo
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zhandong Huang
- School of Chemical Engineering and Technology, Xi'an JiaoTong University, Shaanxi 710049, P. R. China
| | - Shiyang Ji
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yongli Yan
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Xiaodong Yin
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Hanqiu Jiang
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P. R. China
- Spallation Neutron Source Science Center, Dongguan 523803, P. R. China
| | - Yubin Ke
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P. R. China
- Spallation Neutron Source Science Center, Dongguan 523803, P. R. China
| | - Yong Sheng Zhao
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Xuehai Yan
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yali Qiao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yanlin Song
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| |
Collapse
|
14
|
Chikkaraddy R, Huang J, Kos D, Elliott E, Kamp M, Guo C, Baumberg JJ, de Nijs B. Boosting Optical Nanocavity Coupling by Retardation Matching to Dark Modes. ACS PHOTONICS 2023; 10:493-499. [PMID: 36820326 PMCID: PMC9936626 DOI: 10.1021/acsphotonics.2c01603] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Indexed: 06/18/2023]
Abstract
Plasmonic nanoantennas can focus light at nanometer length scales providing intense field enhancements. For the tightest optical confinements (0.5-5 nm) achieved in plasmonic gaps, the gap spacing, refractive index, and facet width play a dominant role in determining the optical properties making tuning through antenna shape challenging. We show here that controlling the surrounding refractive index instead allows both efficient frequency tuning and enhanced in-/output coupling through retardation matching as this allows dark modes to become optically active, improving widespread functionalities.
Collapse
Affiliation(s)
- Rohit Chikkaraddy
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Junyang Huang
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Dean Kos
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Eoin Elliott
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Marlous Kamp
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Chenyang Guo
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Jeremy J. Baumberg
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| | - Bart de Nijs
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, CambridgeCB3 0HE, U.K.
| |
Collapse
|
15
|
Xiong X, Clarke D, Lai Y, Bai P, Png CE, Wu L, Hess O. Substrate engineering of plasmonic nanocavity antenna modes. OPTICS EXPRESS 2023; 31:2345-2358. [PMID: 36785250 DOI: 10.1364/oe.476521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/25/2022] [Indexed: 06/18/2023]
Abstract
Plasmonic nanocavities have emerged as a promising platform for next-generation spectroscopy, sensing and photonic quantum information processing technologies, benefiting from a unique confluence of nanoscale compactness and integrability, ultrafast functionality and room-temperature viability. Harnessing their unprecedented optical field confinement and enhancement properties for such diverse application domains, however, demands continued innovation in cavity design and robust strategies for engineering their plasmonic mode characteristics, with the aim of optimizing spatial and spectral matching conditions for strong light-matter interaction involving embedded quantum emitters. Adopting the canonical gold bowtie nanoantenna, we show that the complex refractive index, n + ik, of the substrate material provides additional design flexibility in tailoring the properties of plasmonic nanocavity modes, including their resonance wavelengths, hotspot locations, intracavity field polarization and radiative decay rates. In particular, we predict that highly refractive (n ≥ 4) or highly absorptive (k ≥ 4) substrates provide two complementary approaches to engineering nanocavity modes that are especially desirable for coupling two-dimensional quantum materials, featuring namely an elevated hotspot with a dominantly in-plane polarized near-field, as well as a strongly radiative character. Our study elucidates the benefits and intricacies of a largely unexplored facet of nanocavity mode manipulation, beyond the widely practiced synthetic control over the cavity topology or physical dimensions, and paves the way for plasmonic cavity quantum electrodynamics with two-dimensional excitonic matter.
Collapse
|
16
|
Heintz J, Legittimo F, Bidault S. Dimers of Plasmonic Nanocubes to Reach Single-Molecule Strong Coupling with High Emission Yields. J Phys Chem Lett 2022; 13:11996-12003. [PMID: 36538766 DOI: 10.1021/acs.jpclett.2c02872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Reaching reproducible strong coupling between a quantum emitter and a plasmonic resonator at room temperature, while maintaining high emission yields, would make quantum information processing with light possible outside of cryogenic conditions. We theoretically propose to exploit the high local curvatures at the tips of plasmonic nanocubes to reach Purcell factors of >106 at visible frequencies, rendering single-molecule strong coupling more easily accessible than with the faceted spherical nanoparticles used in recent experimental demonstrations. In the case of gold nanocube dimers, we highlight a trade-off between coupling strength and emission yield that depends on the nanocube size. Electrodynamic simulations on silver nanostructures are performed using a realistic dielectric constant, as confirmed by scattering spectroscopy performed on single nanocubes. Dimers of silver nanocubes feature Purcell factors similar to those of gold while allowing emission yields of >60%, thus providing design rules for efficient strongly coupled hybrid nanostructures at room temperature.
Collapse
Affiliation(s)
- Jeanne Heintz
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 1 rue Jussieu, 75005Paris, France
| | - Francesca Legittimo
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 1 rue Jussieu, 75005Paris, France
| | - Sébastien Bidault
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 1 rue Jussieu, 75005Paris, France
| |
Collapse
|
17
|
Son J, Kim GH, Lee Y, Lee C, Cha S, Nam JM. Toward Quantitative Surface-Enhanced Raman Scattering with Plasmonic Nanoparticles: Multiscale View on Heterogeneities in Particle Morphology, Surface Modification, Interface, and Analytical Protocols. J Am Chem Soc 2022; 144:22337-22351. [PMID: 36473154 DOI: 10.1021/jacs.2c05950] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Surface-enhanced Raman scattering (SERS) provides significantly enhanced Raman scattering signals from molecules adsorbed on plasmonic nanostructures, as well as the molecules' vibrational fingerprints. Plasmonic nanoparticle systems are particularly powerful for SERS substrates as they provide a wide range of structural features and plasmonic couplings to boost the enhancement, often up to >108-1010. Nevertheless, nanoparticle-based SERS is not widely utilized as a means for reliable quantitative measurement of molecules largely due to limited controllability, uniformity, and scalability of plasmonic nanoparticles, poor molecular modification chemistry, and a lack of widely used analytical protocols for SERS. Furthermore, multiscale issues with plasmonic nanoparticle systems that range from atomic and molecular scales to assembled nanostructure scale are difficult to simultaneously control, analyze, and address. In this perspective, we introduce and discuss the design principles and key issues in preparing SERS nanoparticle substrates and the recent studies on the uniform and controllable synthesis and newly emerging machine learning-based analysis of plasmonic nanoparticle systems for quantitative SERS. Specifically, the multiscale point of view with plasmonic nanoparticle systems toward quantitative SERS is provided throughout this perspective. Furthermore, issues with correctly estimating and comparing SERS enhancement factors are discussed, and newly emerging statistical and artificial intelligence approaches for analyzing complex SERS systems are introduced and scrutinized to address challenges that cannot be fully resolved through synthetic improvements.
Collapse
Affiliation(s)
- Jiwoong Son
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Gyeong-Hwan Kim
- The Research Institute of Basic Sciences, Seoul National University, Seoul 08826, South Korea
| | - Yeonhee Lee
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Chungyeon Lee
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Seungsang Cha
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| |
Collapse
|
18
|
Adamczyk AK, Huijben TAPM, Sison M, Di Luca A, Chiarelli G, Vanni S, Brasselet S, Mortensen KI, Stefani FD, Pilo-Pais M, Acuna GP. DNA Self-Assembly of Single Molecules with Deterministic Position and Orientation. ACS NANO 2022; 16:16924-16931. [PMID: 36065997 DOI: 10.1021/acsnano.2c06936] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
An ideal nanofabrication method should allow the organization of nanoparticles and molecules with nanometric positional precision, stoichiometric control, and well-defined orientation. The DNA origami technique has evolved into a highly versatile bottom-up nanofabrication methodology that fulfils almost all of these features. It enables the nanometric positioning of molecules and nanoparticles with stoichiometric control, and even the orientation of asymmetrical nanoparticles along predefined directions. However, orienting individual molecules has been a standing challenge. Here, we show how single molecules, namely, Cy5 and Cy3 fluorophores, can be incorporated in a DNA origami with controlled orientation by doubly linking them to oligonucleotide strands that are hybridized while leaving unpaired bases in the scaffold. Increasing the number of bases unpaired induces a stretching of the fluorophore linkers, reducing its mobility freedom, and leaves more space for the fluorophore to accommodate and find different sites for interaction with the DNA. Particularly, we explore the effects of leaving 0, 2, 4, 6, and 8 bases unpaired and find extreme orientations for 0 and 8 unpaired bases, corresponding to the molecules being perpendicular and parallel to the DNA double-helix, respectively. We foresee that these results will expand the application field of DNA origami toward the fabrication of nanodevices involving a wide range of orientation-dependent molecular interactions, such as energy transfer, intermolecular electron transport, catalysis, exciton delocalization, or the electromagnetic coupling of a molecule to specific resonant nanoantenna modes.
Collapse
Affiliation(s)
- Aleksandra K Adamczyk
- Department of Physics, University of Fribourg, Chemin du Musée 3, FribourgCH-1700, Switzerland
| | - Teun A P M Huijben
- Department of Health Technology, Technical University of Denmark, Anker Engelunds Vej 101, 2800Kongens Lyngby, Denmark
| | - Miguel Sison
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, F-13013Marseille, France
| | - Andrea Di Luca
- Department of Biology, University of Fribourg, Chemin du Musée 10, FribourgCH-1700, Switzerland
| | - Germán Chiarelli
- Department of Physics, University of Fribourg, Chemin du Musée 3, FribourgCH-1700, Switzerland
| | - Stefano Vanni
- Department of Biology, University of Fribourg, Chemin du Musée 10, FribourgCH-1700, Switzerland
| | - Sophie Brasselet
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, F-13013Marseille, France
| | - Kim I Mortensen
- Department of Health Technology, Technical University of Denmark, Anker Engelunds Vej 101, 2800Kongens Lyngby, Denmark
| | - Fernando D Stefani
- Centro de Investigaciones en Bionanociencias (CIBION), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2390, C1425FQDCiudad Autónoma de Buenos Aires, Argentina
- Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Güiraldes 2620, C1428EHACiudad Autónoma de Buenos Aires, Argentina
| | - Mauricio Pilo-Pais
- Department of Physics, University of Fribourg, Chemin du Musée 3, FribourgCH-1700, Switzerland
| | - Guillermo P Acuna
- Department of Physics, University of Fribourg, Chemin du Musée 3, FribourgCH-1700, Switzerland
| |
Collapse
|
19
|
Niu R, Gao F, Wang D, Zhu D, Su S, Chen S, YuWen L, Fan C, Wang L, Chao J. Pattern Recognition Directed Assembly of Plasmonic Gap Nanostructures for Single-Molecule SERS. ACS NANO 2022; 16:14622-14631. [PMID: 36083609 DOI: 10.1021/acsnano.2c05150] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Gold nanocubes (AuNCs) with tunable localized surface plasmon resonance properties are good candidates for plasmonic gap nanostructures (PGNs) with hot spots (areas with intense electric field localization). Nevertheless, it remains challenging to create shape-controllable nanogaps between AuNCs. Herein, we report a DNA origami directed pattern recognition strategy to assemble AuNCs into PGNs. By tuning the position and number of capture strands on the DNA origami template, different geometrical configurations of PGNs with nanometer-precise and shape-controllable gaps are created. The localized field enhancement in these gaps can generate hot spots that are in accordance with finite difference time domain simulations. Benefiting from the single Raman probe molecule precisely anchored at these nanogaps, the dramatic enhanced electromagnetic fields localized in hot spots arouse stronger single-molecule SERS (SM-SERS) signals. This method can be utilized in the design of ultrahigh-sensitivity photonic devices with tailored optical properties and SERS-based applications.
Collapse
Affiliation(s)
- Renjie Niu
- Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, People's Republic of China
| | - Fei Gao
- Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, People's Republic of China
| | - Dou Wang
- Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, People's Republic of China
| | - Dan Zhu
- Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, People's Republic of China
| | - Shao Su
- Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, People's Republic of China
| | - Shufen Chen
- Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, People's Republic of China
| | - Lihui YuWen
- Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, People's Republic of China
| | - Chunhai Fan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Lianhui Wang
- Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, People's Republic of China
| | - Jie Chao
- Key Laboratory for Organic Electronics and Information Displays (KLOEID) & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, People's Republic of China
| |
Collapse
|
20
|
Plasmonic phenomena in molecular junctions: principles and applications. Nat Rev Chem 2022; 6:681-704. [PMID: 37117494 DOI: 10.1038/s41570-022-00423-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2022] [Indexed: 11/08/2022]
Abstract
Molecular junctions are building blocks for constructing future nanoelectronic devices that enable the investigation of a broad range of electronic transport properties within nanoscale regions. Crossing both the nanoscopic and mesoscopic length scales, plasmonics lies at the intersection of the macroscopic photonics and nanoelectronics, owing to their capability of confining light to dimensions far below the diffraction limit. Research activities on plasmonic phenomena in molecular electronics started around 2010, and feedback between plasmons and molecular junctions has increased over the past years. These efforts can provide new insights into the near-field interaction and the corresponding tunability in properties, as well as resultant plasmon-based molecular devices. This Review presents the latest advancements of plasmonic resonances in molecular junctions and details the progress in plasmon excitation and plasmon coupling. We also highlight emerging experimental approaches to unravel the mechanisms behind the various types of light-matter interactions at molecular length scales, where quantum effects come into play. Finally, we discuss the potential of these plasmonic-electronic hybrid systems across various future applications, including sensing, photocatalysis, molecular trapping and active control of molecular switches.
Collapse
|
21
|
Single-Molecule Surface-Enhanced Raman Spectroscopy. SENSORS 2022; 22:s22134889. [PMID: 35808385 PMCID: PMC9269420 DOI: 10.3390/s22134889] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/20/2022] [Accepted: 06/24/2022] [Indexed: 12/04/2022]
Abstract
Single-molecule surface-enhanced Raman spectroscopy (SM-SERS) has the potential to detect single molecules in a non-invasive, label-free manner with high-throughput. SM-SERS can detect chemical information of single molecules without statistical averaging and has wide application in chemical analysis, nanoelectronics, biochemical sensing, etc. Recently, a series of unprecedented advances have been realized in science and application by SM-SERS, which has attracted the interest of various fields. In this review, we first elucidate the key concepts of SM-SERS, including enhancement factor (EF), spectral fluctuation, and experimental evidence of single-molecule events. Next, we systematically discuss advanced implementations of SM-SERS, including substrates with ultra-high EF and reproducibility, strategies to improve the probability of molecules being localized in hotspots, and nonmetallic and hybrid substrates. Then, several examples for the application of SM-SERS are proposed, including catalysis, nanoelectronics, and sensing. Finally, we summarize the challenges and future of SM-SERS. We hope this literature review will inspire the interest of researchers in more fields.
Collapse
|
22
|
Deng S, Park JE, Kang G, Guan J, Li R, Schatz GC, Odom TW. Interfacial engineering of plasmonic nanoparticle metasurfaces. Proc Natl Acad Sci U S A 2022; 119:e2202621119. [PMID: 35605124 PMCID: PMC9295783 DOI: 10.1073/pnas.2202621119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 04/22/2022] [Indexed: 11/18/2022] Open
Abstract
SignificanceMolecules interacting with metallic nanostructures can show tunable exciton-plasmon coupling, ranging from weak to strong. One factor that influences the interactions is the spatial organization of the molecules relative to the localized plasmon-enhanced electromagnetic fields. In this work, we show that the arrangement of aromatic dye molecules can be tuned within plasmonic hotspots by interfacial engineering of nanoparticle surfaces. By controlling the local chemical and physical interactions, we could modulate lasing thresholds. Surface-functionalized plasmonic metasurfaces open prospects for programmable light-matter interactions at the nanoscale.
Collapse
Affiliation(s)
- Shikai Deng
- Department of Chemistry, Northwestern University, Evanston, IL 60208
| | - Jeong-Eun Park
- Department of Chemistry, Northwestern University, Evanston, IL 60208
| | - Gyeongwon Kang
- Department of Chemistry, Northwestern University, Evanston, IL 60208
| | - Jun Guan
- Department of Chemistry, Northwestern University, Evanston, IL 60208
| | - Ran Li
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208
| | - George C. Schatz
- Department of Chemistry, Northwestern University, Evanston, IL 60208
| | - Teri W. Odom
- Department of Chemistry, Northwestern University, Evanston, IL 60208
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208
| |
Collapse
|
23
|
Herrera F, Litinskaya M. Disordered ensembles of strongly coupled single-molecule plasmonic picocavities as nonlinear optical metamaterials. J Chem Phys 2022; 156:114702. [DOI: 10.1063/5.0080063] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We propose to use molecular picocavity ensembles as macroscopic coherent nonlinear optical devices enabled by nanoscale strong coupling. For a generic picocavity model that includes molecular and photonic disorder, we derive theoretical performance bounds for coherent cross-phase modulation signals using weak classical fields of different frequencies. We show that strong coupling of the picocavity vacua with a specific vibronic sideband in the molecular emission spectrum results in a significant variation of the effective refractive index of the metamaterial relative to a molecule-free scenario due to a vacuum-induced Autler–Townes effect. For a realistic molecular disorder model, we demonstrate that cross-phase modulation of optical fields as weak as 10 kW/cm2 is feasible using dilute ensembles of molecular picocavities at room temperature, provided that the confined vacuum is not resonantly driven by the external probe field. Our work paves the way for the development of plasmonic metamaterials that exploit strong coupling for optical state preparation and quantum control.
Collapse
Affiliation(s)
- Felipe Herrera
- Department of Physics, Universidad de Santiago de Chile, Av. Ecuador, 3493 Santiago, Chile
- ANID-Millennium Institute for Research in Optics, Concepción, Chile
| | - Marina Litinskaya
- Department of Physics & Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| |
Collapse
|
24
|
Lo TW, Chen X, Zhang Z, Zhang Q, Leung CW, Zayats AV, Lei D. Plasmonic Nanocavity Induced Coupling and Boost of Dark Excitons in Monolayer WSe 2 at Room Temperature. NANO LETTERS 2022; 22:1915-1921. [PMID: 35225629 DOI: 10.1021/acs.nanolett.1c04360] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Spin-forbidden excitons in monolayer transition metal dichalcogenides are optically inactive at room temperature. Probing and manipulating these dark excitons are essential for understanding exciton spin relaxation and valley coherence of these 2D materials. Here, we show that the coupling of dark excitons to a metal nanoparticle-on-mirror cavity leads to plasmon-induced resonant emission with the intensity comparable to that of the spin-allowed bright excitons. A three-state quantum model combined with full-wave electrodynamic calculations reveals that the radiative decay rate of the dark excitons can be enhanced by nearly 6 orders of magnitude through the Purcell effect, therefore compensating its intrinsic nature of weak radiation. Our nanocavity approach provides a useful paradigm for understanding the room-temperature dynamics of dark excitons, potentially paving the road for employing dark exciton in quantum computing and nanoscale optoelectronics.
Collapse
Affiliation(s)
- Tsz Wing Lo
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong S.A.R
- Department of Applied Physics, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Hung Hom, Hong Kong S.A.R
| | - Xiaolin Chen
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Hung Hom, Hong Kong S.A.R
| | - Zhedong Zhang
- Department of Physics, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong S.A.R
| | - Qiang Zhang
- Department of Physics and Optoelectronics, Key Lab of Advanced Transducers and Intelligent Control System of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China
| | - Chi Wah Leung
- Department of Applied Physics, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Hung Hom, Hong Kong S.A.R
| | - Anatoly V Zayats
- Department of Physics and London Centre for Nanotechnology, King's College London, Strand, London WC2R 2LS, United Kingdom
| | - Dangyuan Lei
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong S.A.R
- Department of Applied Physics, The Hong Kong Polytechnic University, 11 Yuk Choi Road, Hung Hom, Hong Kong S.A.R
| |
Collapse
|
25
|
Lee J, Jeon DJ, Yeo JS. Quantum Plasmonics: Energy Transport Through Plasmonic Gap. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006606. [PMID: 33891781 DOI: 10.1002/adma.202006606] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/12/2020] [Indexed: 06/12/2023]
Abstract
At the interfaces of metal and dielectric materials, strong light-matter interactions excite surface plasmons; this allows electromagnetic field confinement and enhancement on the sub-wavelength scale. Such phenomena have attracted considerable interest in the field of exotic material-based nanophotonic research, with potential applications including nonlinear spectroscopies, information processing, single-molecule sensing, organic-molecule devices, and plasmon chemistry. These innovative plasmonics-based technologies can meet the ever-increasing demands for speed and capacity in nanoscale devices, offering ultrasensitive detection capabilities and low-power operations. Size scaling from the nanometer to sub-nanometer ranges is consistently researched; as a result, the quantum behavior of localized surface plasmons, as well as those of matter, nonlocality, and quantum electron tunneling is investigated using an innovative nanofabrication and chemical functionalization approach, thereby opening a new era of quantum plasmonics. This new field enables the ultimate miniaturization of photonic components and provides extreme limits on light-matter interactions, permitting energy transport across the extremely small plasmonic gap. In this review, a comprehensive overview of the recent developments of quantum plasmonic resonators with particular focus on novel materials is presented. By exploring the novel gap materials in quantum regime, the potential quantum technology applications are also searched for and mapped out.
Collapse
Affiliation(s)
- Jihye Lee
- School of Integrated Technology, Yonsei University, Incheon, 21983, Republic of Korea
- Yonsei Institute of Convergence Technology, Yonsei University, Incheon, 21983, Republic of Korea
| | - Deok-Jin Jeon
- School of Integrated Technology, Yonsei University, Incheon, 21983, Republic of Korea
- Yonsei Institute of Convergence Technology, Yonsei University, Incheon, 21983, Republic of Korea
| | - Jong-Souk Yeo
- School of Integrated Technology, Yonsei University, Incheon, 21983, Republic of Korea
- Yonsei Institute of Convergence Technology, Yonsei University, Incheon, 21983, Republic of Korea
| |
Collapse
|
26
|
Kim JM, Lee C, Lee Y, Lee J, Park SJ, Park S, Nam JM. Synthesis, Assembly, Optical Properties, and Sensing Applications of Plasmonic Gap Nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006966. [PMID: 34013617 DOI: 10.1002/adma.202006966] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/30/2020] [Indexed: 06/12/2023]
Abstract
Plasmonic gap nanostructures (PGNs) have been extensively investigated mainly because of their strongly enhanced optical responses, which stem from the high intensity of the localized field in the nanogap. The recently developed methods for the preparation of versatile nanogap structures open new avenues for the exploration of unprecedented optical properties and development of sensing applications relying on the amplification of various optical signals. However, the reproducible and controlled preparation of highly uniform plasmonic nanogaps and the prediction, understanding, and control of their optical properties, especially for nanogaps in the nanometer or sub-nanometer range, remain challenging. This is because subtle changes in the nanogap significantly affect the plasmonic response and are of paramount importance to the desired optical performance and further applications. Here, recent advances in the synthesis, assembly, and fabrication strategies, prediction and control of optical properties, and sensing applications of PGNs are discussed, and perspectives toward addressing these challenging issues and the future research directions are presented.
Collapse
Affiliation(s)
- Jae-Myoung Kim
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Chungyeon Lee
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Yeonhee Lee
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| | - Jinhaeng Lee
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, South Korea
| | - So-Jung Park
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, South Korea
| | - Sungho Park
- Department of Chemistry, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul, 08826, South Korea
| |
Collapse
|
27
|
Griffiths J, de Nijs B, Chikkaraddy R, Baumberg JJ. Locating Single-Atom Optical Picocavities Using Wavelength-Multiplexed Raman Scattering. ACS PHOTONICS 2021; 8:2868-2875. [PMID: 34692898 PMCID: PMC8532146 DOI: 10.1021/acsphotonics.1c01100] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Indexed: 05/25/2023]
Abstract
Transient atomic protrusions in plasmonic nanocavities confine optical fields to sub-1-nm3 picocavities, allowing the optical interrogation of single molecules at room temperature. While picocavity formation is linked to both the local chemical environment and optical irradiation, the role of light in localizing the picocavity formation is unclear. Here, we combine information from thousands of picocavity events and simultaneously compare the transient Raman scattering arising from two incident pump wavelengths. Full analysis of the data set suggests that light suppresses the local effective barrier height for adatom formation and that the initial barrier height is decreased by reduced atomic coordination numbers near facet edges. Modeling the system also resolves the frequency-dependent picocavity field enhancements supported by these atomic scale features.
Collapse
Affiliation(s)
- Jack Griffiths
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Bart de Nijs
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Rohit Chikkaraddy
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, U.K.
| | - Jeremy J. Baumberg
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, U.K.
| |
Collapse
|
28
|
Kottaram Amrithanath A, Krishnaswamy S. Efficient harnessing of light from nanoscale emitters deterministically placed through polymer-pen lithography at the focus of 3D-printed ellipsoidal micro-lenses. OPTICS LETTERS 2021; 46:4734-4737. [PMID: 34598186 DOI: 10.1364/ol.437416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/27/2021] [Indexed: 06/13/2023]
Abstract
Collecting significant and measurable signals from the typically omnidirectional emission of nanoscale emitters is challenging. To improve the collection efficiency, it is essential to deterministically place the emitters in desired locations and design mode converters to match the modes of emission to those of the collection system. In this Letter, we propose the deterministic placement of nanoscale emitters using a pick-and-place technique called polymer-pen lithography. We demonstrate the concept with upconversion nanoparticles placed deterministically at the focus of three-dimensional-printed ellipsoidal micro-lenses. A significant part of the forward-going emission is collimated leading to increased collection efficiency, even at low numerical apertures of the collecting optics. The proposed approach lends itself to hybrid integration for fiber-to-chip and on-chip applications.
Collapse
|
29
|
Heintz J, Markešević N, Gayet EY, Bonod N, Bidault S. Few-Molecule Strong Coupling with Dimers of Plasmonic Nanoparticles Assembled on DNA. ACS NANO 2021; 15:14732-14743. [PMID: 34469108 DOI: 10.1021/acsnano.1c04552] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hybrid nanostructures, in which a known number of quantum emitters are strongly coupled to a plasmonic resonator, should feature optical properties at room temperature such as few-photon nonlinearities or coherent superradiant emission. We demonstrate here that this coupling regime can only be reached with dimers of gold nanoparticles in stringent experimental conditions, when the interparticle spacing falls below 2 nm. Using a short transverse DNA double-strand, we introduce five dye molecules in the gap between two 40 nm gold particles and actively decrease its length down to sub-2 nm values by screening electrostatic repulsion between the particles at high ionic strengths. Single-nanostructure scattering spectroscopy then evidence the observation of a strong-coupling regime in excellent agreement with electrodynamic simulations. Furthermore, we highlight the influence of the planar facets of polycrystalline gold nanoparticles on the probability of observing strongly coupled hybrid nanostructures.
Collapse
Affiliation(s)
- Jeanne Heintz
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 1 rue Jussieu, 75005 Paris, France
| | - Nemanja Markešević
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 1 rue Jussieu, 75005 Paris, France
| | - Elise Y Gayet
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 1 rue Jussieu, 75005 Paris, France
| | - Nicolas Bonod
- Aix Marseille Univ, CNRS, Centrale Marseille, Institut Fresnel, 52 Avenue Escadrille Normandie Niemen, 13013 Marseille, France
| | - Sébastien Bidault
- Institut Langevin, ESPCI Paris, Université PSL, CNRS, 1 rue Jussieu, 75005 Paris, France
| |
Collapse
|
30
|
Chikkaraddy R, Baumberg JJ. Accessing Plasmonic Hotspots Using Nanoparticle-on-Foil Constructs. ACS PHOTONICS 2021; 8:2811-2817. [PMID: 34553005 PMCID: PMC8447257 DOI: 10.1021/acsphotonics.1c01048] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Indexed: 05/20/2023]
Abstract
Metal-insulator-metal (MIM) nanogaps in the canonical nanoparticle-on-mirror geometry (NPoM) provide deep-subwavelength confinement of light with mode volumes smaller than V/V λ < 10-6. However, access to these hotspots is limited by the impendence mismatch between the high in-plane k ∥ of trapped light and free-space plane-waves, making the in- and out-coupling of light difficult. Here, by constructing a nanoparticle-on-foil (NPoF) system with thin metal films, we show the mixing of insulator-metal-insulator (IMI) modes and MIM gap modes results in MIMI modes. This mixing provides multichannel access to the plasmonic nanocavity through light incident from both sides of the metal film. The red-tuning and near-field strength of MIMI modes for thinner foils is measured experimentally with white-light scattering and surface-enhanced Raman scattering from individual NPoFs. We discuss further the utility of NPoF systems, since the geometry allows tightly confined light to be accessed simply through different ports.
Collapse
Affiliation(s)
- Rohit Chikkaraddy
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, JJ Thompson Avenue, University of Cambridge, Cambridge CB3 0HE, United Kingdom
| | - Jeremy J Baumberg
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, JJ Thompson Avenue, University of Cambridge, Cambridge CB3 0HE, United Kingdom
| |
Collapse
|
31
|
Chan WP, Chen JH, Chou WL, Chen WY, Liu HY, Hu HC, Jeng CC, Li JR, Chen C, Chen SY. Efficient DNA-Driven Nanocavities for Approaching Quasi-Deterministic Strong Coupling to a Few Fluorophores. ACS NANO 2021; 15:13085-13093. [PMID: 34313105 DOI: 10.1021/acsnano.1c02331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Strong coupling between light and matter is the foundation of promising quantum photonic devices such as deterministic single photon sources, single atom lasers, and photonic quantum gates, which consist of an atom and a photonic cavity. Unlike atom-based systems, a strong coupling unit based on an emitter-plasmonic nanocavity system has the potential to bring these devices to the microchip scale at ambient conditions. However, efficiently and precisely positioning a single or a few emitters into a plasmonic nanocavity is challenging. In addition, placing a strong coupling unit on a designated substrate location is a demanding task. Here, fluorophore-modified DNA strands are utilized to drive the formation of particle-on-film plasmonic nanocavities and simultaneously integrate the fluorophores into the high field region of the nanocavities. High cavity yield and fluorophore coupling yield are demonstrated. This method is then combined with e-beam lithography to position the strong coupling units on designated locations of a substrate. Furthermore, polariton energy under the detuning of fluorophore embedded nanocavities can fit into a model consisting of three sets of two-level systems, implying vibronic modes may be involved in the strong coupling. Our system makes strong coupling units more practical on the microchip scale and at ambient conditions and provides a stable platform for investigating fluorophore-plasmonic nanocavity interaction.
Collapse
Affiliation(s)
- Wan-Ping Chan
- Department of Photonics, National Cheng Kung University, Tainan, Taiwan 70101
| | - Jyun-Hong Chen
- Department of Photonics, National Cheng Kung University, Tainan, Taiwan 70101
| | - Wei-Lun Chou
- Department of Photonics, National Cheng Kung University, Tainan, Taiwan 70101
| | - Wen-Yuan Chen
- Department of Photonics, National Cheng Kung University, Tainan, Taiwan 70101
| | - Hao-Yu Liu
- Department of Photonics, National Cheng Kung University, Tainan, Taiwan 70101
| | - Hsiao-Ching Hu
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan 70101
| | - Chien-Chung Jeng
- Department of Physics, National Chung Hsing University, Taichung, Taiwan 40227
| | - Jie-Ren Li
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan 70101
| | - Chi Chen
- Research Center for Applied Science, Academia Sinica, Taipei, Taiwan 11529
| | - Shiuan-Yeh Chen
- Department of Photonics, National Cheng Kung University, Tainan, Taiwan 70101
| |
Collapse
|
32
|
Anantharaman SB, Jo K, Jariwala D. Exciton-Photonics: From Fundamental Science to Applications. ACS NANO 2021; 15:12628-12654. [PMID: 34310122 DOI: 10.1021/acsnano.1c02204] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Semiconductors in all dimensionalities ranging from 0D quantum dots and molecules to 3D bulk crystals support bound electron-hole pair quasiparticles termed excitons. Over the past two decades, the emergence of a variety of low-dimensional semiconductors that support excitons combined with advances in nano-optics and photonics has burgeoned an advanced area of research that focuses on engineering, imaging, and modulating the coupling between excitons and photons, resulting in the formation of hybrid quasiparticles termed exciton-polaritons. This advanced area has the potential to bring about a paradigm shift in quantum optics, as well as classical optoelectronic devices. Here, we present a review on the coupling of light in excitonic semiconductors and previous investigations of the optical properties of these hybrid quasiparticles via both far-field and near-field imaging and spectroscopy techniques. Special emphasis is given to recent advances with critical evaluation of the bottlenecks that plague various materials toward practical device implementations including quantum light sources. Our review highlights a growing need for excitonic material development together with optical engineering and imaging techniques to harness the utility of excitons and their host materials for a variety of applications.
Collapse
Affiliation(s)
- Surendra B Anantharaman
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Kiyoung Jo
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Deep Jariwala
- Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| |
Collapse
|
33
|
Rastogi R, Dogbe Foli EA, Vincent R, Adam PM, Krishnamoorthy S. Engineering Electromagnetic Hot-Spots in Nanoparticle Cluster Arrays on Reflective Substrates for Highly Sensitive Detection of (Bio)molecular Analytes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:32653-32661. [PMID: 34242017 DOI: 10.1021/acsami.1c01953] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Intense electromagnetic (EM) hot-spots arising at the junctions or gaps in plasmonic nanoparticle assemblies can drive ultrahigh sensitivity in molecular detection by surface-enhanced spectroscopies. Harnessing this potential however requires access to the confined physical space at the EM hot-spots, which is a challenge for larger analytes such as biomolecules. Here, we demonstrate self-assembly derived gold nanoparticle cluster arrays (NCAs) on gold substrates exhibiting controlled interparticle (<1 nm wide) and intercluster (<10 nm wide) hot-spots as highly promising in this direction. Sensitivity of the NCAs toward detection of small (<1 nm) or large (protein-receptor interactions) analytes in surface-enhanced Raman and metal-enhanced fluorescence assays is found to be strongly impacted by the size of the cluster and the presence of reflective substrates. Experiments supported by numerical simulations attribute the higher sensitivity to higher EM field enhancements at the hot-spots, as well as greater analyte leverage over EM hot-spots. The best-performing arrays could push the sensitivity down to picomolar detection limits for sub-nanometric organic analytes as well as large protein analytes. The investigation paves the way for rational design of plasmonic biosensors and highlights the unique capabilities of a molecular self-assembly approach toward catering to this objective.
Collapse
Affiliation(s)
- Rishabh Rastogi
- MRT Department, Luxembourg Institute of Technology, 41, Rue du Brill, Belvaux L-4422, Luxembourg
- Laboratory Light, Nanomaterials and Nanotechnologies-L2n, University of Technology of Troyes and CNRS ERL 7004, 12 rue Marie Curie, Troyes 10000, France
| | - Ekoue A Dogbe Foli
- Laboratory Light, Nanomaterials and Nanotechnologies-L2n, University of Technology of Troyes and CNRS ERL 7004, 12 rue Marie Curie, Troyes 10000, France
| | - Remi Vincent
- Laboratory Light, Nanomaterials and Nanotechnologies-L2n, University of Technology of Troyes and CNRS ERL 7004, 12 rue Marie Curie, Troyes 10000, France
| | - Pierre-Michel Adam
- Laboratory Light, Nanomaterials and Nanotechnologies-L2n, University of Technology of Troyes and CNRS ERL 7004, 12 rue Marie Curie, Troyes 10000, France
| | | |
Collapse
|
34
|
Zhu J, Wu F, Han Z, Shang Y, Liu F, Yu H, Yu L, Li N, Ding B. Strong Light-Matter Interactions in Chiral Plasmonic-Excitonic Systems Assembled on DNA Origami. NANO LETTERS 2021; 21:3573-3580. [PMID: 33830773 DOI: 10.1021/acs.nanolett.1c00596] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The exploitation of strong light-matter interactions in chiral plasmonic nanocavities may enable exceptional physical phenomena and lead to potential applications in nanophotonics, information communication, etc. Therefore, a deep understanding of strong light-matter interactions in chiral plasmonic-excitonic (plexcitonic) systems constructed by a chiral plasmonic nanocavity and molecular excitons is urgently needed. Herein, we systematically studied the strong light-matter interactions in gold nanorod-based chiral plexcitonic systems assembled on DNA origami. Rabi splitting and anticrossing behavior were observed in circular dichroism spectra, manifesting chiroptical characteristic hybridization. The bisignate line shape of the circular dichroism (CD) signal allows the accurate discrimination of hybrid modes. A large Rabi splitting of ∼205/∼199 meV for left-handed/right-handed plexcitonic nanosystems meets the criterion of strong coupling. Our work deepens the understanding of light-matter interactions in chiral plexcitonic nanosystems and will facilitate the development of chiral quantum optics and chiroptical devices.
Collapse
Affiliation(s)
- Jinjin Zhu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Fan Wu
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, 10 Xitucheng Road, Beijing 100876, China
| | - Zihong Han
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yingxu Shang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
| | - Fengsong Liu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haiyin Yu
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China
| | - Li Yu
- State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, 10 Xitucheng Road, Beijing 100876, China
| | - Na Li
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Baoquan Ding
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, 11 BeiYiTiao, ZhongGuanCun, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
| |
Collapse
|
35
|
Tapio K, Mostafa A, Kanehira Y, Suma A, Dutta A, Bald I. A Versatile DNA Origami-Based Plasmonic Nanoantenna for Label-Free Single-Molecule Surface-Enhanced Raman Spectroscopy. ACS NANO 2021; 15:7065-7077. [PMID: 33872513 PMCID: PMC8155336 DOI: 10.1021/acsnano.1c00188] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
DNA origami technology allows for the precise nanoscale assembly of chemical entities that give rise to sophisticated functional materials. We have created a versatile DNA origami nanofork antenna (DONA) by assembling Au or Ag nanoparticle dimers with different gap sizes down to 1.17 nm, enabling signal enhancements in surface-enhanced Raman scattering (SERS) of up to 1011. This allows for single-molecule SERS measurements, which can even be performed with larger gap sizes to accommodate differently sized molecules, at various excitation wavelengths. A general scheme is presented to place single analyte molecules into the SERS hot spots using the DNA origami structure exploiting covalent and noncovalent coupling schemes. By using Au and Ag dimers, single-molecule SERS measurements of three dyes and cytochrome c and horseradish peroxidase proteins are demonstrated even under nonresonant excitation conditions, thus providing long photostability during time-series measurement and enabling optical monitoring of single molecules.
Collapse
Affiliation(s)
- Kosti Tapio
- Institute
of Chemistry, University of Potsdam, Potsdam DE-14476, Germany
| | - Amr Mostafa
- Institute
of Chemistry, University of Potsdam, Potsdam DE-14476, Germany
| | - Yuya Kanehira
- Institute
of Chemistry, University of Potsdam, Potsdam DE-14476, Germany
| | - Antonio Suma
- Institute
for Computational Molecular Science, Temple
University, Philadelphia, Pennsylvania19122, United States
- Dipartimento
di Fisica, Università di Bari and
Sezione INFN di Bari, 70126 Bari, Italy
| | - Anushree Dutta
- Institute
of Chemistry, University of Potsdam, Potsdam DE-14476, Germany
| | - Ilko Bald
- Institute
of Chemistry, University of Potsdam, Potsdam DE-14476, Germany
| |
Collapse
|
36
|
Xomalis A, Zheng X, Demetriadou A, Martínez A, Chikkaraddy R, Baumberg JJ. Interfering Plasmons in Coupled Nanoresonators to Boost Light Localization and SERS. NANO LETTERS 2021; 21:2512-2518. [PMID: 33705151 PMCID: PMC7995252 DOI: 10.1021/acs.nanolett.0c04987] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/01/2021] [Indexed: 05/27/2023]
Abstract
Plasmonic self-assembled nanocavities are ideal platforms for extreme light localization as they deliver mode volumes of <50 nm3. Here we show that high-order plasmonic modes within additional micrometer-scale resonators surrounding each nanocavity can boost light localization to intensity enhancements >105. Plasmon interference in these hybrid microresonator nanocavities produces surface-enhanced Raman scattering (SERS) signals many-fold larger than in the bare plasmonic constructs. These now allow remote access to molecules inside the ultrathin gaps, avoiding direct irradiation and thus preventing molecular damage. Combining subnanometer gaps with micrometer-scale resonators places a high computational demand on simulations, so a generalized boundary element method (BEM) solver is developed which requires 100-fold less computational resources to characterize these systems. Our results on extreme near-field enhancement open new potential for single-molecule photonic circuits, mid-infrared detectors, and remote spectroscopy.
Collapse
Affiliation(s)
- Angelos Xomalis
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Xuezhi Zheng
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, Cambridge CB3 0HE, United Kingdom
- Department
of Electrical Engineering (ESAT-TELEMIC), KU Leuven, Kasteelpark Arenberg 10, BUS 2444, 3001 Leuven, Belgium
| | - Angela Demetriadou
- School
of Physics and Astronomy, University of
Birmingham, Birmingham B15 2TT, United Kingdom
| | - Alejandro Martínez
- Nanophotonics
Technology Center, Universitat Politècnica
de València, Valencia 46022, Spain
| | - Rohit Chikkaraddy
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Jeremy J. Baumberg
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, Cambridge CB3 0HE, United Kingdom
| |
Collapse
|
37
|
Maccaferri N, Barbillon G, Koya AN, Lu G, Acuna GP, Garoli D. Recent advances in plasmonic nanocavities for single-molecule spectroscopy. NANOSCALE ADVANCES 2021; 3:633-642. [PMID: 36133836 PMCID: PMC9418431 DOI: 10.1039/d0na00715c] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 11/04/2020] [Indexed: 05/12/2023]
Abstract
Plasmonic nanocavities are able to engineer and confine electromagnetic fields to subwavelength volumes. In the past decade, they have enabled a large set of applications, in particular for sensing, optical trapping, and the investigation of physical and chemical phenomena at a few or single-molecule levels. This extreme sensitivity is possible thanks to the highly confined local field intensity enhancement, which depends on the geometry of plasmonic nanocavities. Indeed, suitably designed structures providing engineered local optical fields lead to enhanced optical sensing based on different phenomena such as surface enhanced Raman scattering, fluorescence, and Förster resonance energy transfer. In this mini-review, we illustrate the most recent results on plasmonic nanocavities, with specific emphasis on the detection of single molecules.
Collapse
Affiliation(s)
- Nicolò Maccaferri
- Department of Physics and Materials Science, University of Luxembourg 162a avenue de la Faïencerie L-1511 Luxembourg Luxembourg
| | | | | | - Guowei Lu
- State Key Laboratory for Mesoscopic Physics, Collaborative Innovation Center of Quantum Matter, Peking University Beijing 100871 China
| | - Guillermo P Acuna
- Département de Physique - Photonic Nanosystems, Université de Fribourg CH-1700 Fribourg Switzerland
| | - Denis Garoli
- Istituto Italiano di Tecnologia Via Morego 30 16163 Genova Italy
- Faculty of Science and Technology, Free University of Bozen-Bolzano Piazza università 1 39100 Bolzano Italy
| |
Collapse
|
38
|
Liang L, Zheng P, Zhang C, Barman I. A Programmable DNA-Silicification-Based Nanocavity for Single-Molecule Plasmonic Sensing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2005133. [PMID: 33458901 PMCID: PMC8275373 DOI: 10.1002/adma.202005133] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/23/2020] [Indexed: 05/19/2023]
Abstract
Plasmonic nanocavities are highly desirable for optical sensing because of their singular ability to confine light into deep subwavelength volumes. Yet, it remains profoundly challenging to fabricate structurally resilient nanocavities with high fidelity, and to obtain direct, noninvasive visualization of the plasmonic hotspots within such constructs. Herein, highly precise and robust nanocavities, entitled DNA-silicified template for Raman optical beacon (DNA-STROBE), are engineered by using silicified DNA scaffolds for spatial organization of discrete plasmonic nanoparticles. In addition to substantially enhancing structural stability and chemical inertness, DNA silicification significantly improves nanogap control, resulting simultaneously in large and controlled local electromagnetic field enhancement. The ultrasmall mode volume of the DNA-STROBE constructs promotes single-molecule occupancy enabling surface-enhanced Raman spectroscopy (SERS) observations of single-molecule activity even at elevated background concentration, significantly relaxing the restrictive pico- to nanomolar molecular concentration condition typically required for such investigations. Additionally, leveraging super-resolution SERS measurements allows noninvasive and diffraction-unlimited spatial profiling of otherwise unresolvable plasmonic hotspots. The highly programmable and reproducible nature of the DNA-STROBE, coupled with its quantitative label-free molecular readouts, provides a versatile platform with applications across the spectrum of nanophotonics and biomedical sciences.
Collapse
Affiliation(s)
- Le Liang
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Peng Zheng
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Chi Zhang
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Ishan Barman
- Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
- The Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA
| |
Collapse
|
39
|
Zhang Y, Esteban R, Boto RA, Urbieta M, Arrieta X, Shan C, Li S, Baumberg JJ, Aizpurua J. Addressing molecular optomechanical effects in nanocavity-enhanced Raman scattering beyond the single plasmonic mode. NANOSCALE 2021; 13:1938-1954. [PMID: 33442716 DOI: 10.1039/d0nr06649d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The description of surface-enhanced Raman scattering (SERS) as a molecular optomechanical process has provided new insights into the vibrational dynamics and nonlinearities of this inelastic scattering process. In earlier studies, molecular vibrations have typically been assumed to couple with a single plasmonic mode of a metallic nanostructure, ignoring the complexity of the plasmonic response in many configurations of practical interest such as in metallic nanojunctions. By describing the plasmonic fields as a continuum, we demonstrate here the importance of considering the full plasmonic response to properly address the molecule-cavity optomechanical interaction. We apply the continuum-field model to calculate the Raman signal from a single molecule in a plasmonic nanocavity formed by a nanoparticle-on-a-mirror configuration, and compare the results of optomechanical parameters, vibrational populations, and Stokes and anti-Stokes signals of the continuum-field model with those obtained from the single-mode model. Our results reveal that high-order non-radiative plasmonic modes significantly modify the optomechanical behavior under strong laser illumination. Moreover, Raman linewidths, lineshifts, vibrational populations, and parametric instabilities are found to be sensitive to the energy of the molecular vibrational modes. The implications of adopting the continuum-field model to describe the plasmonic cavity response in molecular optomechanics are relevant in many other nanoantenna and nanocavity configurations commonly used to enhance SERS.
Collapse
Affiliation(s)
- Yuan Zhang
- Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China.
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Fabrication and temperature-dependent electrical characterization of a C-shape nanowire patterned by a DNA origami. Sci Rep 2021; 11:1922. [PMID: 33479352 PMCID: PMC7820232 DOI: 10.1038/s41598-021-81178-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 12/23/2020] [Indexed: 11/08/2022] Open
Abstract
We introduce a method based on directed molecular self-assembly to manufacture and electrically characterise C-shape gold nanowires which clearly deviate from typical linear shape due to the design of the template guiding the assembly. To this end, gold nanoparticles are arranged in the desired shape on a DNA-origami template and enhanced to form a continuous wire through electroless deposition. C-shape nanowires with a size below 150nm on a \documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{mathrsfs}
\usepackage{upgreek}
\setlength{\oddsidemargin}{-69pt}
\begin{document}$${\hbox {SiO}_2}/\hbox {Si}$$\end{document}SiO2/Si substrate are contacted with gold electrodes by means of electron beam lithography. Charge transport measurements of the nanowires show hopping, thermionic and tunneling transports at different temperatures in the 4.2K to 293K range. The different transport mechanisms indicate that the C-shape nanowires consist of metallic segments which are weakly coupled along the wires.
Collapse
|
41
|
Kurochkin NS, Eliseev SP, Gritsienko AV, Sychev VV, Vutukhnovsky AG. Silver nanoparticle on aluminum mirror: active spectroscopy and decay rate enhancement. NANOTECHNOLOGY 2020; 31:505206. [PMID: 33021216 DOI: 10.1088/1361-6528/abb629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Recent advances in nanotechnology and optics have paved the way for new plasmonic devices. One of them are nanopatch antennas that are simple and, at the same time, effective devices for localizing the electromagnetic field on a scale of less than 10 nm and can be used in photonic integrated circuits as effective sources of photons, including single-photon sources. In the present study, we investigate the radiative characteristics of a submonolayer of colloidal CdSe/CdS quantum dots that form island structures in a resonator: a cubic silver nanoparticle on an aluminum mirror. For detecting plasmonic nanoparticles on glass or metal surfaces, we propose a new technique involving a tunable laser and a confocal microscope. We provide a comparative study of the luminescence enhancement factors for QDs in the NPAs upon off-resonance excitation and at a wavelength close to the resonance; a significant difference in the luminescence enhancement factors (by order of magnitude) is demonstrated. A 60-fold reduction in the spontaneous emission time, as well as an increase in the radiation intensity by a factor of 330, has been obtained in the experiments. The increase in the spontaneous emission rate demonstrated for the quantum dots is explained by the Purcell effect. Full-wave simulations of electromagnetic fields were carried out for the model of the developed nanopatch antenna; luminescence enhancement factors and radiative efficiencies were calculated as well.
Collapse
Affiliation(s)
- N S Kurochkin
- Moscow Institute of Physics and Technology (State University), 9 Institutskiy per., 141701 Dolgoprudny, Moscow Region, Russia
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy pr., 119991 Moscow, Russia
| | - S P Eliseev
- Moscow Institute of Physics and Technology (State University), 9 Institutskiy per., 141701 Dolgoprudny, Moscow Region, Russia
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy pr., 119991 Moscow, Russia
| | - A V Gritsienko
- Moscow Institute of Physics and Technology (State University), 9 Institutskiy per., 141701 Dolgoprudny, Moscow Region, Russia
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy pr., 119991 Moscow, Russia
| | - V V Sychev
- Moscow Institute of Physics and Technology (State University), 9 Institutskiy per., 141701 Dolgoprudny, Moscow Region, Russia
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy pr., 119991 Moscow, Russia
| | - A G Vutukhnovsky
- Moscow Institute of Physics and Technology (State University), 9 Institutskiy per., 141701 Dolgoprudny, Moscow Region, Russia
- P.N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy pr., 119991 Moscow, Russia
| |
Collapse
|
42
|
Bido AT, Nordberg BG, Engevik MA, Lindquist NC, Brolo AG. High-Speed Fluctuations in Surface-Enhanced Raman Scattering Intensities from Various Nanostructures. APPLIED SPECTROSCOPY 2020; 74:1398-1406. [PMID: 32677843 DOI: 10.1177/0003702820940391] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The observation of single molecule events using surface-enhanced Raman scattering (SERS) is a well-established phenomenon. These events are characterized by strong fluctuations in SERS intensities. High-speed SERS intensity fluctuations (in the microsecond time scale) have been reported for experiments involving single metallic particles. In this work, the high-speed SERS behavior of six different types of nanostructured metal systems (Ag nanoshells, Ag nanostars, Ag aggregated spheres, Au aggregated spheres, particle-on-mirror, and Ag deposited on microspheres) was investigated. All systems demonstrated high-speed SERS intensity fluctuations. Statistical analysis of the duration of the SERS fluctuations yielded tailed distributions with average event durations around 100 μs. Although the characteristics of the fluctuations seem to be random, the results suggest interesting differences between the system that might be associated with the strength distribution and density of the localized SERS hotspots. For instance, systems with more localized fields, such as nanostars, present faster fluctuation bursts compared to metallic aggregates that support spread-out fields. The results presented here appear to confirm that high-speed SERS intensity fluctuations are a fundamental characteristic of the SERS effect.
Collapse
Affiliation(s)
- Ariadne T Bido
- Department of Chemistry, University of Victoria, Victoria, BC, Canada
- Center for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC, Canada
| | - Britta G Nordberg
- Department of Physics and Engineering, Bethel University, St. Paul, MN, USA
| | - Marit A Engevik
- Department of Physics and Engineering, Bethel University, St. Paul, MN, USA
| | - Nathan C Lindquist
- Department of Physics and Engineering, Bethel University, St. Paul, MN, USA
| | - Alexandre G Brolo
- Department of Chemistry, University of Victoria, Victoria, BC, Canada
- Center for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria, BC, Canada
| |
Collapse
|
43
|
Felicetti S, Fregoni J, Schnappinger T, Reiter S, de Vivie-Riedle R, Feist J. Photoprotecting Uracil by Coupling with Lossy Nanocavities. J Phys Chem Lett 2020; 11:8810-8818. [PMID: 32914984 PMCID: PMC7569670 DOI: 10.1021/acs.jpclett.0c02236] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 09/11/2020] [Indexed: 05/08/2023]
Abstract
We analyze how the photorelaxation dynamics of a molecule can be controlled by modifying its electromagnetic environment using a nanocavity mode. In particular, we consider the photorelaxation of the RNA nucleobase uracil, which is the natural mechanism to prevent photodamage. In our theoretical work, we identify the operative conditions in which strong coupling with the cavity mode can open an efficient photoprotective channel, resulting in a relaxation dynamics twice as fast as the natural one. We rely on a state-of-the-art chemically detailed molecular model and a non-Hermitian Hamiltonian propagation approach to perform full-quantum simulations of the system dissipative dynamics. By focusing on the photon decay, our analysis unveils the active role played by cavity-induced dissipative processes in modifying chemical reaction rates, in the context of molecular polaritonics. Remarkably, we find that the photorelaxation efficiency is maximized when an optimal trade-off between light-matter coupling strength and photon decay rate is satisfied. This result is in contrast with the common intuition that increasing the quality factor of nanocavities and plasmonic devices improves their performance. Finally, we use a detailed model of a metal nanoparticle to show that the speedup of the uracil relaxation could be observed via coupling with a nanosphere pseudomode, without requiring the implementation of complex nanophotonic structures.
Collapse
Affiliation(s)
- Simone Felicetti
- Istituto
di Fotonica e Nanotecnologie, Consiglio
Nazionale delle Ricerche (IFN-CNR), Milano, Italy
- Departamento
de Física Teórica
de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autonoma de Madrid, Madrid, Spain
| | - Jacopo Fregoni
- Dipartimento
di Scienze Chimiche, University of Padova, Padova, Italy
- Dipartimento
di Scienze Fisiche, Informatiche e Matematiche, University of Modena and Reggio Emilia, Modena, Italy
| | | | - Sebastian Reiter
- Department
Chemie, Ludwig-Maximilians-Universität
München, München, Germany
| | | | - Johannes Feist
- Departamento
de Física Teórica
de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autonoma de Madrid, Madrid, Spain
| |
Collapse
|
44
|
Ojambati O, Chikkaraddy R, Deacon WM, Huang J, Wright D, Baumberg JJ. Efficient Generation of Two-Photon Excited Phosphorescence from Molecules in Plasmonic Nanocavities. NANO LETTERS 2020; 20:4653-4658. [PMID: 32422048 PMCID: PMC7366501 DOI: 10.1021/acs.nanolett.0c01593] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 05/14/2020] [Indexed: 05/26/2023]
Abstract
Nonlinear molecular interactions with optical fields produce intriguing optical phenomena and applications ranging from color generation to biomedical imaging and sensing. The nonlinear cross-section of dielectric materials is low and therefore for effective utilisation, the optical fields need to be amplified. Here, we demonstrate that two-photon absorption can be enhanced by 108 inside individual plasmonic nanocavities containing emitters sandwiched between a gold nanoparticle and a gold film. This enhancement results from the high field strengths confined in the nanogap, thus enhancing nonlinear interactions with the emitters. We further investigate the parameters that determine the enhancement including the cavity spectral position and excitation wavelength. Moreover, the Purcell effect drastically reduces the emission lifetime from 520 ns to <200 ps, turning inefficient phosphorescent emitters into an ultrafast light source. Our results provide an understanding of enhanced two-photon-excited emission, allowing for optimization of efficient nonlinear light-matter interactions at the nanoscale.
Collapse
|
45
|
Ruggeri FS, Mannini B, Schmid R, Vendruscolo M, Knowles TPJ. Single molecule secondary structure determination of proteins through infrared absorption nanospectroscopy. Nat Commun 2020; 11:2945. [PMID: 32522983 PMCID: PMC7287102 DOI: 10.1038/s41467-020-16728-1] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 05/11/2020] [Indexed: 12/21/2022] Open
Abstract
The chemical and structural properties of biomolecules determine their interactions, and thus their functions, in a wide variety of biochemical processes. Innovative imaging methods have been developed to characterise biomolecular structures down to the angstrom level. However, acquiring vibrational absorption spectra at the single molecule level, a benchmark for bulk sample characterization, has remained elusive. Here, we introduce off-resonance, low power and short pulse infrared nanospectroscopy (ORS-nanoIR) to allow the acquisition of infrared absorption spectra and chemical maps at the single molecule level, at high throughput on a second timescale and with a high signal-to-noise ratio (~10-20). This high sensitivity enables the accurate determination of the secondary structure of single protein molecules with over a million-fold lower mass than conventional bulk vibrational spectroscopy. These results pave the way to probe directly the chemical and structural properties of individual biomolecules, as well as their interactions, in a broad range of chemical and biological systems.
Collapse
Affiliation(s)
| | - Benedetta Mannini
- Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | - Roman Schmid
- Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK
| | | | - Tuomas P J Knowles
- Department of Chemistry, University of Cambridge, Cambridge, CB2 1EW, UK.
- Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK.
| |
Collapse
|
46
|
Tóth E, Ungor D, Novák T, Ferenc G, Bánhelyi B, Csapó E, Erdélyi M, Csete M. Mapping Fluorescence Enhancement of Plasmonic Nanorod Coupled Dye Molecules. NANOMATERIALS 2020; 10:nano10061048. [PMID: 32485951 PMCID: PMC7352240 DOI: 10.3390/nano10061048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/20/2020] [Accepted: 05/25/2020] [Indexed: 12/27/2022]
Abstract
Plasmonically enhanced fluorescence is a widely studied and applied phenomenon, however, only a comparative theoretical and experimental analysis of coupled fluorophores and plasmonic nanoresonators makes it possible to uncover how this phenomenon can be controlled. A numerical optimization method was applied to design configurations that are capable of resulting in an enhancement of excitation and emission, moreover, of both phenomena simultaneously in coupled Cy5 dye molecule and gold nanorod systems. Parametric sensitivity studies revealed how the fluorescence enhancement depends on the molecule’s location, distance and orientation. Coupled systems designed for simultaneous improvement exhibited the highest (intermediate directional) total fluorescence enhancement, which is accompanied by intermediate sensitivity to the molecule’s parameters, except the location and orientation sensitivity at the excitation wavelength. Gold nanorods with a geometry corresponding to the predicted optimal configurations were synthesized, and DNA strands were used to control the Cy5 dye molecule distance from the nanorod surface via hybridization of the Cy5-labelled oligonucleotide. State-of-the-art dSTORM microscopy was used to accomplish a proof-of-concept experimental demonstration of the theoretically predicted (directional) total fluorescence enhancement. The measured fluorescence enhancement was in good agreement with theoretical predictions, thus providing a complete kit to design and prepare coupled nanosystems exhibiting plasmonically enhanced fluorescence.
Collapse
Affiliation(s)
- Emese Tóth
- Department of Optics and Quantum Electronics, University of Szeged, Dóm Square 9, H-6720 Szeged, Hungary; (E.T.); (T.N.); (M.E.)
| | - Ditta Ungor
- Department of Physical Chemistry and Materials Science, Interdisciplinary Excellence Centre, University of Szeged, Rerrich B. Square 1, H-6720 Szeged, Hungary; (D.U.); (E.C.)
| | - Tibor Novák
- Department of Optics and Quantum Electronics, University of Szeged, Dóm Square 9, H-6720 Szeged, Hungary; (E.T.); (T.N.); (M.E.)
| | - Györgyi Ferenc
- Institute of Plant Biology, Biological Research Centre, Temesvári krt. 62, H-6726 Szeged, Hungary;
| | - Balázs Bánhelyi
- Department of Computational Optimization, University of Szeged, Árpád Square 2, H-6720 Szeged, Hungary;
| | - Edit Csapó
- Department of Physical Chemistry and Materials Science, Interdisciplinary Excellence Centre, University of Szeged, Rerrich B. Square 1, H-6720 Szeged, Hungary; (D.U.); (E.C.)
- MTA-SZTE Biomimetic Systems Research Group, Department of Medical Chemistry, Faculty of Medicine, University of Szeged, Dóm Square 8, H-6720 Szeged, Hungary
| | - Miklós Erdélyi
- Department of Optics and Quantum Electronics, University of Szeged, Dóm Square 9, H-6720 Szeged, Hungary; (E.T.); (T.N.); (M.E.)
| | - Mária Csete
- Department of Optics and Quantum Electronics, University of Szeged, Dóm Square 9, H-6720 Szeged, Hungary; (E.T.); (T.N.); (M.E.)
- Correspondence: ; Tel.: +36-62-544654
| |
Collapse
|
47
|
Cheetham M, Griffiths J, Nijs BD, Heath GR, Evans SD, Baumberg JJ, Chikkaraddy R. Out-of-Plane Nanoscale Reorganization of Lipid Molecules and Nanoparticles Revealed by Plasmonic Spectroscopy. J Phys Chem Lett 2020; 11:2875-2882. [PMID: 32191487 PMCID: PMC7168604 DOI: 10.1021/acs.jpclett.0c00182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 03/19/2020] [Indexed: 05/25/2023]
Abstract
Lipid bilayers assembled on solid substrates have been extensively studied with single-molecule resolution as the constituent molecules diffuse in 2D; however, the out-of-plane motion is typically ignored. Here we present the subnanometer out-of-plane diffusion of nanoparticles attached to hybrid lipid bilayers (HBLs) assembled on metal surfaces. The nanoscale cavity formed between the Au nanoparticle and Au film provides strongly enhanced optical fields capable of locally probing HBLs assembled in the gaps. This allows us to spectroscopically resolve the nanoparticles assembled on bilayers, near edges, and in membrane defects, showing the strong influence of charged lipid rafts. Nanoparticles sitting on the edges of the HBL are observed to flip onto and off of the bilayer, with flip energies of ∼10 meV showing how thermal energies dynamically modify lipid arrangements around a nanoparticle. We further resolve the movement of individual lipid molecules by doping the HBL with low concentrations of Texas Red (TxR) dye-labeled lipids.
Collapse
Affiliation(s)
- Matthew
R. Cheetham
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Jack Griffiths
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Bart de Nijs
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, Cambridge CB3 0HE, United Kingdom
| | - George R. Heath
- School
of Physics and Astronomy, University of
Leeds, Woodhouse Lane, Leeds LS2 9JT, United Kingdom
| | - Stephen D. Evans
- School
of Physics and Astronomy, University of
Leeds, Woodhouse Lane, Leeds LS2 9JT, United Kingdom
| | - Jeremy J. Baumberg
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Rohit Chikkaraddy
- NanoPhotonics
Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thompson Avenue, Cambridge CB3 0HE, United Kingdom
| |
Collapse
|
48
|
Herrera F, Owrutsky J. Molecular polaritons for controlling chemistry with quantum optics. J Chem Phys 2020; 152:100902. [DOI: 10.1063/1.5136320] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Felipe Herrera
- Department of Physics, Universidad de Santiago de Chile, Av. Ecuador 3493, Santiago, Chile and Millennium Institute for Research in Optics MIRO, Concepción, Chile
| | | |
Collapse
|
49
|
Unveiling the radiative local density of optical states of a plasmonic nanocavity by STM. Nat Commun 2020; 11:1021. [PMID: 32094339 PMCID: PMC7039974 DOI: 10.1038/s41467-020-14827-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 01/29/2020] [Indexed: 11/27/2022] Open
Abstract
Atomically-sharp tips in close proximity of metal surfaces create plasmonic nanocavities supporting both radiative (bright) and non-radiative (dark) localized surface plasmon modes. Disentangling their respective contributions to the total density of optical states remains a challenge. Electroluminescence due to tunnelling through the tip-substrate gap could allow the identification of the radiative component, but this information is inherently convoluted with that of the electronic structure of the system. In this work, we present a fully experimental procedure to eliminate the electronic-structure factors from the scanning tunnelling microscope luminescence spectra by confronting them with spectroscopic information extracted from elastic current measurements. Comparison against electromagnetic calculations demonstrates that this procedure allows the characterization of the meV shifts experienced by the nanocavity plasmonic modes under atomic-scale gap size changes. Therefore, the method gives access to the frequency-dependent radiative Purcell enhancement that a microscopic light emitter would undergo when placed at such nanocavity. Disentangling the radiative and non-radiative plasmon mode contributions to the total photonic density of states is a challenge. Here, the authors report a procedure to eliminate the electronic-structure factors from scanning tunnelling microscope luminescence spectra to isolate the radiative component.
Collapse
|
50
|
Grabenhorst L, Trofymchuk K, Steiner F, Glembockyte V, Tinnefeld P. Fluorophore photostability and saturation in the hotspot of DNA origami nanoantennas. Methods Appl Fluoresc 2020; 8:024003. [DOI: 10.1088/2050-6120/ab6ac8] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|