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Funes-Hernando D, Pelaez-Fernandez M, Winterauer D, Mevellec JY, Arenal R, Batten T, Humbert B, Duvail JL. Coaxial nanowires as plasmon-mediated remote nanosensors. Nanoscale 2018; 10:6437-6444. [PMID: 29565076 DOI: 10.1039/c8nr00125a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This study reports on the plasmon-mediated remote Raman sensing promoted by specially designed coaxial nanowires. This unusual geometry for Raman study is based on the separation, by several micrometres, of the excitation laser spot, on one tip of the nanowire, and the Raman detection at the other tip. The very weak efficiency of Raman emission makes it challenging in a remote configuration. For the proof-of-concept, we designed coaxial nanowires consisting of a gold core to propagate surface plasmon polaritons and a Raman-emitting shell of poly(3,4-ethylene-dioxythiophene). The success of the fabrication was demonstrated by correlating, for the same single nanowire, a morphological analysis by electron microscopy and Raman spectroscopy analysis. Importantly for probing the remote-Raman effect, the original hard template-based process allows one to control the location of the polymer shell all along the nanowire, or only close to one or the two nanowire tips. Such all-in-one single nanowires could have applications in the remote detection of photo-degradable substances and for exploring 1D nanosources for integrated photonic and plasmonic systems.
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Affiliation(s)
- D Funes-Hernando
- Institut des Matériaux Jean Rouxel (IMN), UMR 6502 CNRS and Université de Nantes, 2 rue de la Houssinière, 44322 Nantes, France.
| | - M Pelaez-Fernandez
- Laboratorio de Microscopias Avanzadas, Instituto de Nanociencia de Aragon, Universidad de Zaragoza, c/ Mariano Esquillor Edificio I+D, 50018 Zaragoza, Spain
| | - D Winterauer
- Renishaw plc, New Mills, Wotton-under-Edge, GL12 8JR, UK
| | - J-Y Mevellec
- Institut des Matériaux Jean Rouxel (IMN), UMR 6502 CNRS and Université de Nantes, 2 rue de la Houssinière, 44322 Nantes, France.
| | - R Arenal
- Laboratorio de Microscopias Avanzadas, Instituto de Nanociencia de Aragon, Universidad de Zaragoza, c/ Mariano Esquillor Edificio I+D, 50018 Zaragoza, Spain and ARAID Foundation, 50018 Zaragoza, Spain
| | - T Batten
- Renishaw plc, New Mills, Wotton-under-Edge, GL12 8JR, UK
| | - B Humbert
- Institut des Matériaux Jean Rouxel (IMN), UMR 6502 CNRS and Université de Nantes, 2 rue de la Houssinière, 44322 Nantes, France.
| | - J L Duvail
- Institut des Matériaux Jean Rouxel (IMN), UMR 6502 CNRS and Université de Nantes, 2 rue de la Houssinière, 44322 Nantes, France.
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Wardley A, Fredriksson J, Leslie I, Batten T, Ring A. Anti-cancer resource use in the initial management of advanced HER2+ breast cancer: An interim analysis of the UK ESTHER study. Eur J Cancer 2018. [DOI: 10.1016/s0959-8049(18)30572-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Billinghurst BE, Bergstrom JC, Baribeau C, Batten T, Dallin L, May TE, Vogt JM, Wurtz WA, Warnock R, Bizzozero DA, Kramer S. Observation of Wakefields and Resonances in Coherent Synchrotron Radiation. Phys Rev Lett 2015; 114:204801. [PMID: 26047232 DOI: 10.1103/physrevlett.114.204801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Indexed: 06/04/2023]
Abstract
We report on high resolution measurements of resonances in the spectrum of coherent synchrotron radiation (CSR) at the Canadian Light Source (CLS). The resonances permeate the spectrum at wave number intervals of 0.074 cm(-1), and are highly stable under changes in the machine setup (energy, bucket filling pattern, CSR in bursting or continuous mode). Analogous resonances were predicted long ago in an idealized theory as eigenmodes of a smooth toroidal vacuum chamber driven by a bunched beam moving on a circular orbit. A corollary of peaks in the spectrum is the presence of pulses in the wakefield of the bunch at well-defined spatial intervals. Through experiments and further calculations we elucidate the resonance and wakefield mechanisms in the CLS vacuum chamber, which has a fluted form much different from a smooth torus. The wakefield is observed directly in the 30-110 GHz range by rf diodes, and indirectly by an interferometer in the THz range. The wake pulse sequence found by diodes is less regular than in the toroidal model, and depends on the point of observation, but is accounted for in a simulation of fields in the fluted chamber. Attention is paid to polarization of the observed fields, and possible coherence of fields produced in adjacent bending magnets. Low frequency wakefield production appears to be mainly local in a single bend, but multibend effects cannot be excluded entirely, and could play a role in high frequency resonances. New simulation techniques have been developed, which should be invaluable in further work.
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Affiliation(s)
- B E Billinghurst
- Canadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - J C Bergstrom
- Canadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - C Baribeau
- Canadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - T Batten
- Canadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - L Dallin
- Canadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - T E May
- Canadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - J M Vogt
- Canadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - W A Wurtz
- Canadian Light Source Inc., University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3, Canada
| | - R Warnock
- SLAC National Accelerator Laboratory, Stanford University, Menlo Park, California 94025, USA and Department of Mathematics and Statistics, University of New Mexico, Albuquerque, New Mexico 87131, USA
| | - D A Bizzozero
- Department of Mathematics and Statistics, University of New Mexico, Albuquerque, New Mexico 87131, USA
| | - S Kramer
- Brookhaven National Laboratory, Upton, New York 11973, USA
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Bageghni S, Batten T, Ainscough JFX. 23 Repairing the heart: possible role for Ciz1. Heart 2011. [DOI: 10.1136/heartjnl-2011-300920b.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
In the sailfin molly, Poecilia latipinna, seven morphological endocrine cell-types could be distinguished with the electron microscope. Each of these was identified with one of the seven cell-types distinguished with the light microscope, to most of which endocrine functions have previously been allocated. Corticotrophs and prolactin cells form the rostral pars distalis, and the proximal pars distalis consists of an outer layer of gonadotrophs and an inner zone containing growth hormone cells and thyrotrophs. The pars intermedia contains two cell-types, of uncertain function. Stellate cells (interstitial cells) occur throughout the adenohypophysis, but are most numerous and prominent in the rostral pars distalis. The inner proximal pars distalis contains a cell-type not previously distinguished in this species with the light microscope, the Z-cell, which could be aminergic. The ultrastructural features of each cell-type are described in detail, and discussed in comparisons with the homologous cells described in other teleosts. There is good agreement for different teleosts in the ultrastructural details of each cell type.
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