scholarly journals White nanolight source for optical nanoimaging

2020 ◽  
Vol 6 (23) ◽  
pp. eaba4179
Author(s):  
Takayuki Umakoshi ◽  
Misaki Tanaka ◽  
Yuika Saito ◽  
Prabhat Verma
Keyword(s):  
Carbon Nanotubes ◽  
Resonant Excitation ◽  
Visible Range ◽  
Experimental Demonstration ◽  
Next Generation ◽  
Metallic Nanostructure ◽  
Resonant Phenomenon ◽  
Research Fields ◽  
Multiple Wavelengths

Nanolight sources, which are based on resonant excitation of plasmons near a sharp metallic nanostructure, have attracted tremendous interest in the vast research fields of optical nanoimaging. However, being a resonant phenomenon, this ideally works only for one wavelength that resonates with the plasmons. Multiple wavelengths of light in a broad range confined to one spot within a nanometric volume would be an interesting form of light, useful in numerous applications. Plasmon nanofocusing can generate a nanolight source through the propagation and adiabatic compressions of plasmons on a tapered metallic nanostructure, which is independent of wavelength, as it is based on the propagation, rather than resonance, of plasmons. Here, we report the generation of a white nanolight source spanning over the entire visible range through plasmon nanofocusing and demonstrate spectral bandgap nanoimaging of carbon nanotubes. Our experimental demonstration of the white nanolight source would stimulate diverse research fields toward next-generation nanophotonic technologies.

scholarly journals Emergence of Additional Visible-Range Photoluminescence Due to Aggregation of Cyanine Dye: Astraphloxin on Carbon Nanotubes Dispersed with Anionic Surfactant

2016 ◽  
Vol 120 (36) ◽  
pp. 20378-20386 ◽  
Author(s):  
Petro Lutsyk ◽  
Yuri Piryatinski ◽  
Mohammed AlAraimi ◽  
Raz Arif ◽  
Mykola Shandura ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Anionic Surfactant ◽  
Cyanine Dye ◽  
Visible Range

scholarly journals Surface Properties of Silica–MWCNTs/PDMS Composite Coatings Deposited on Plasma Activated Glass Supports

2021 ◽  
Vol 11 (19) ◽  
pp. 9256
Author(s):  
Michał Chodkowski ◽  
Iryna Ya. Sulym ◽  
Konrad Terpiłowski ◽  
Dariusz Sternik
Keyword(s):  
Electron Microscopy ◽  
Carbon Nanotubes ◽  
Scanning Electron Microscopy ◽  
Multiwalled Carbon Nanotubes ◽  
Composite Coatings ◽  
Thermal Analyses ◽  
Sol Gel ◽  
Visible Range ◽  
Multiwalled Carbon ◽  
Scanning Electron

In this paper, we focus on fabrication and physicochemical properties investigations of silica–multiwalled carbon nanotubes/poly(dimethylsiloxane) composite coatings deposited on the glass supports activated by cold plasma. Air or argon was used as the carrier gas in the plasma process. Multiwalled carbon nanotubes were modified with poly(dimethylsiloxane) in order to impart their hydrophobicity. The silica–multiwalled carbon nanotubes/poly(dimethylsiloxane) nanocomposite was synthesized using the sol–gel technique with acid-assisted tetraethyl orthosilicate hydrolysis. The stability and the zeta potential of the obtained suspension were evaluated. Then, the product was dried and used as a filler in another sol–gel process, which led to the coating application via the dip-coating method. The substrates were exposed to the hexamethyldisilazane vapors in order to improve their hydrophobicity. The obtained surfaces were characterized by the wettability measurements and surface free energy determination as well as optical profilometry, scanning electron microscopy, and transmittance measurements. In addition, the thermal analyses of the carbon nanotubes as well as coatings were made. It was found that rough and hydrophobic coatings were obtained with a high transmittance in the visible range. They are characterized by the water contact angle larger than 90 degrees and the transmission at the level of 95%. The X-ray diffraction studies as well as scanning electron microscopy images confirmed the chemical and structural compositions of the coatings. They are thermally stable at the temperature up to 250 °C. Moreover, the thermal analysis showed that the obtained composite material has greater thermal resistance than the pure nanotubes.

Experimental demonstration of next-generation FSO communication system

2006 ◽  
Author(s):  
Kamugisha Kazaura ◽  
Kazunori Omae ◽  
Toshiji Suzuki ◽  
Mitsuji Matsumoto ◽  
Edward Mutafungwa ◽  
...  
Keyword(s):  
Communication System ◽  
Experimental Demonstration ◽  
Next Generation

A Novel Chloroplastmimic Photovoltaics With Full Visible Spectrum Operation

2007 ◽  
Author(s):  
Gou-Jen Wang ◽  
Wei-Zheng Chen ◽  
Ming-Way Lee
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
Visible Light ◽  
Thylakoid Membrane ◽  
Visible Spectrum ◽  
Visible Range ◽  
Hydrogen Ions ◽  
Ion Diffusion ◽  
Multiple Reflections ◽  
Ultraviolet Range

A novel and very simple chloroplastmimic photovoltaic scheme, in which water is photolyzed by a new photocatalyst fabricated by depositing a thin film of TiO2 on an array of carbon nanotubes (CNT), has been made. Multiple reflections within the photocatalyst extend the optical response from the ultraviolet range to the full visible range. Hydrogen ions with various concentrations are separated by an artificial thylakoid membrane, resulting in a transmembrane chemiosmotic potential, generating ion-diffusion-induced electricity. Experimental results demonstrate that the proposed simple chloroplastmimic photovoltaics can produce a photocurrent directly from visible light.

Microwave energy-based synthesis and characterisation of hollow carbon nanospheres decorated with carbon nanotubes or metal oxide nanowires

2018 ◽  
pp. 01-13
Author(s):  
Selcuk Poyraz
Keyword(s):  
Carbon Nanotubes ◽  
Metal Oxide ◽  
Synthesis Method ◽  
Microwave Energy ◽  
Next Generation ◽  
Carbon Nanospheres ◽  
Oxide Nanowires ◽  
Metal Oxide Nanowires ◽  
Hollow Carbon ◽  
Advanced Applications

Hollow carbon nanospheres (HCNSs), with either carbon nanotube (CNT) or metal oxide nanowire (MONW) decoration on their surface, were synthesised as building materials with a great potential for the next generation advanced applications. A well-established, polymeric latex NS synthesis method and a simply modified version of a microwave (MW) energy-based carbonisation approach, i.e. Poptube, were systematically combined to obtain these HCNSs. Through this simple, facile, affordable and easily scalable ‘combined synthesis method’, it was managed to successfully produce HCNSs with an unique morphological, spectroscopic, thermal and elemental features, all of which were strongly supported by both various material characterisation test results and the relevant previous literature data. Thus, it is believed that the as-synthesised CNT or MONW decorated HCNSs (CNT–MONW/HCNS) from the above-mentioned method would soon become the materials of preference for the next generation advanced applications in various science and engineering fields. Keywords: Hollow carbon nanospheres, carbon nanotubes, metal oxide nanowires, microwave energy, conducting polymer. 

Fast Transient Analysis of Next-Generation Interconnects Based on Carbon Nanotubes

2010 ◽  
Vol 52 (2) ◽  
pp. 496-503 ◽  
Author(s):  
Marcello D'Amore ◽  
Maria Sabrina Sarto ◽  
Alessio Tamburrano
Keyword(s):  
Carbon Nanotubes ◽  
Transient Analysis ◽  
Next Generation ◽  
Fast Transient

The Chalkboard - Carbon Nanotubes: Next Generation of Electronic Materials

2006 ◽  
Vol 15 (2) ◽  
pp. 23-61 ◽  
Author(s):  
Jaldappagari Seetharamappa ◽  
Shivaraj Yellappa ◽  
Francis D’Souza
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Materials ◽  
Next Generation
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