Investigation of localized surface plasmon resonance of TiN nanoparticles in TiN_xO_y thin films

Zhang, Jun; Chen, T. P.; Li, X. D.; Liu, Y. C.; Liu, Y.; Yang, Hui Ying

doi:10.1364/ome.6.002422

Cited by 28 publications

(22 citation statements)

References 29 publications

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“…The free-electron absorption and the localized surface plasmon resonance (LSPR) in TiN can be modelled using Drude model and Lorenz oscillator. Therefore, the dielectric function of TiO x N y ( εTiO x N y ) thin films can be described by the following dispersion model [43]. (1) where is the high frequency dielectric constant; and are the plasma energy and damping factor of the Drude term contribution of free electron, respectively; and are the strength, resonance energy and damping factor of the LSPR oscillation, respectively; and are the strength, resonance energy and damping factor of the oscillator for the interband transitions, respectively.…”

Section: Optical Characterizationmentioning

confidence: 99%

Structural, Optical and Electrical Properties of Electron Beam Evaporated Tioxny Films as Selective Solar Absorber Coatings

2020

AMSE

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Titanium oxinitride (TiOx Ny ) solar absorber coatings were deposited at different oxygen partial pressures onto Cu, Si and glass substrates using electron beam evaporation technique. XRD diffraction patterns evidenced (111), (200) and (220) orientation of TiNx phase. The preferred orientation of the films changed with oxygen partial pressure. XPS revealed the intensity of both Ti 2P3/2 and Ti 2P1/2 increases as a function of oxygen flow, and also shifted towards higher binding energy, indicating more oxidized state of Ti species than that of TiO2 due to incorporation of nitrogen atoms. Formation of uniformly distributed spherical like particles and an increase in surface roughness of the TiOx Ny films were observed as a function of oxygen partial pressure as depicted from SEM and AFM, respectively. Ellipsometric and resistivity measurements showed a shift from metallic to semiconductor behaviour of the TiOx Ny films as oxygen flow changed. A solar absorptance value of 0.94 in the solar spectrum region and a low thermal emittance value of 0.05 were achieved for the TiOx Ny solar absorber coatings prepared at the oxygen partial pressure of 7.5x10-5 Torr due to both interference and intrinsic absorption. This study confirmed that a single layer of TiOx Ny film can be a good candidate as selective solar absorber.

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Section: Optical Characterizationmentioning

confidence: 99%

Structural, Optical and Electrical Properties of Electron Beam Evaporated Tioxny Films as Selective Solar Absorber Coatings

2020

AMSE

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“…In this context it is necessary to develop new materials or to improve the existent ones by functional coatings. Titanium based stents exhibit reasonable surface properties and, if coated with a titanium oxynitride layer their performances for both medical [1][2][3] and engineering applications [4][5][6] can be further improved. Based on numerous works, stents coated with a TiOxNy film, exhibit superior clinical performance compared with uncoated stents especially due to the low adherence of platelets and fibrinogen [7,8].…”

Section: Extended Abstractmentioning

confidence: 99%

Thickness, Temperature and Magnetic Field Dependent Resistance of Cu1.8S

Jo¹,

Woo²,

Kim³

et al. 2018

Proceedings of the 3rd World Congress on Recent Advances in Nanotechnology

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Section: Extended Abstractmentioning

confidence: 99%

Design of TiOxNy for Developing Layered Stent Technology

Ficai¹,

Sönmez²,

Trusc³

et al. 2017

Proceedings of the 2nd World Congress on Recent Advances in Nanotechnology

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Extended AbstractStents are medical devices that are increasingly used in medical practice. Unfortunately, existing materials present certain disadvantages and lead to high failure risk. In this context it is necessary to develop new materials or to improve the existent ones by functional coatings. Titanium based stents exhibit reasonable surface properties and, if coated with a titanium oxynitride layer their performances for both medical [1][2][3] and engineering applications [4][5][6] can be further improved. Based on numerous works, stents coated with a TiOxNy film, exhibit superior clinical performance compared with uncoated stents especially due to the low adherence of platelets and fibrinogen [7,8]. In this study, the synthesis of TiO2 nanopowders was carried out by three different routes, in order to optimize the N:O ratio, in particularly, and thus to design the characteristics of the obtained nanopowders. The first synthesis route involved the chemical modification of the titanium dioxide (anatase form), by exposure at the action of ammonia 25% under magnetic stirring for 12h, followed by drying at 80°C overnight. TiOxNy nanoparticles were obtained with average particle size of 20-30nm, but also particles as large as 100nm in diameter can be identified. The second synthesis route involved in hydrolysis of titanium isopropoxide in concentrated ammonia. Hydrolysis was carried out by maintaining titanium isopropoxide in NH4OH (25%) for 12h, under magnetic stirring, followed by drying at 80°C overnight. It should be noted that the hydrolysis is practically instantaneous. TiOxNy nanoparticles were obtained with a broader particle size distribution with particles starting from 5-10nm to particles larger than 100nm in diameter. The third synthetic route involve the hydrolysis of titanium isopropoxide with the ammonia vapour followed by drying at 80oC, overnight. It should be noted that the modification of the morphology of the particles are independent and as a result of the treatment that has been exposed to moist powder is practically negligible. TiOxNy nanoparticles were obtained with particle sizes of 5-10nm, the tendency of agglomeration being very high. The N:O ratio was in the range 1:20 to 1:10 being adequate for manufacturing coated stents.

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Investigation of localized surface plasmon resonance of TiN nanoparticles in TiN_xO_y thin films

Cited by 28 publications

References 29 publications

Structural, Optical and Electrical Properties of Electron Beam Evaporated Tioxny Films as Selective Solar Absorber Coatings

Structural, Optical and Electrical Properties of Electron Beam Evaporated Tioxny Films as Selective Solar Absorber Coatings

Thickness, Temperature and Magnetic Field Dependent Resistance of Cu1.8S

Design of TiOxNy for Developing Layered Stent Technology

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