Diamond-like nanostructured carbon film deposition using thermionic vacuum arc

Musa, G.; Mustaţǎ, I.; Ciupină, V.; Vladoiu, R.; Prodan, G.; Vasile, Eugeniu; Ehrich, H.

doi:10.1016/j.diamond.2003.10.048

Cited by 36 publications

(19 citation statements)

References 19 publications

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“…Preparation of the carbon and tungsten films has been done by the TVA method developed at NILPRP that uses an electron beam emitted by an externally heated cathode (a grounded tungsten filament) accelerated by a high anodic voltage 9–11. The electron beams provided by a TVA gun evaporate the tungsten and the graphite anodes successively.…”

Section: Methodsmentioning

confidence: 99%

“…However, the behavior of W, C, and Be at high flux energies is not fully understood yet and it is widely studied in present 1–7, e.g., carbon films using ns‐laser irradiation 8. We study the behavior of C (2500 nm) and W (200 nm) bilayer structures deposited on fine grain graphite substrates using the original thermionic vacuum arc technique (TVA) 9–12, in interaction with single or multiple ultra short pulsed laser beams. The National Institute for Laser, Plasma, and Radiation Physics (NILPRP) terawatt laser (TEWALAS) facility is a multi‐terawatt laser amplifier system, 0.025–360 × 10 −12 s pulse duration, up to 400 mJ pulse energy, 10 Hz maximum repetition rate 13.…”

Section: Introductionmentioning

confidence: 99%

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Terawatt laser system irradiation of carbon/tungsten bilayers

Lungu

Marcu

Poroşnicu

et al. 2012

Physica Status Solidi (a)

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Using the original thermionic vacuum arc method (TVA), carbon films with the thickness of about 2500 nm were coated on top of 200 nm tungsten films deposited on fine grain graphite substrates. The carbon/tungsten bilayers were irradiated using a terawatt laser system (TEWALAS), 360 ps and 100 fs pulse duration, 110–150 mJ pulse energy. The analysis of the selected area electron diffraction (SAED) pattern allowed the identification of rhomboedral structures corresponding to diamond. The Raman scattering measurements were also performed on the produced craters and the specific peak at 1330 cm−1 corresponding to diamond was observed. The CC sp3 bonding content increased to 39.4% in the irradiated region compared to 30.8% in the “as deposited” zone, as shown by XPS. The craters produced by the laser irradiation were morphologically studied using optical imaging and scanning electron microscopy.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Terawatt laser system irradiation of carbon/tungsten bilayers

Lungu

Marcu

Poroşnicu

et al. 2012

Physica Status Solidi (a)

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“…80,81 Typically, the favorable characteristics (such as large mobilities and high transconductance) of carbon promote it as an ideal component for integrated nanoelectronics, providing the suitable properties for successful radiofrequency (RF) applications. [88][89][90] The nanorobot uses a radiofrequency identification device (RFID) CMOS transponder system for in vivo positioning. 91,92 The generated information by nanorobots will help doctors and specialists to provide a real-time health care and the medication regimen of the patient.…”

Section: Detection Of Diabetesmentioning

confidence: 99%

Biomedical applications of nanobiosensors: the state-of-the-art

Rai¹,

Gade²,

Gaikwad³

et al. 2012

J. Braz. Chem. Soc.

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O desenvolvimento de nanobiosensores é um dos avanços mais recentes no campo da nanotecnologia. A investigação sobre nanobiosensores ópticos com dimensões submicrométricas tem aberto novos horizontes para as medições intracelulares. Aproveitando as propriedades únicas dos nanomateriais, nanobiosensores mais rápidos e sensíveis podem ser desenvolvidos. Além de serem sensíveis e rápidos, os estudos de nanobiosensores têm voltado seus esforços para o desenvolvimento de sensores baseados em nanomateriais que são acessíveis, robustos e reprodutíveis. Os nanobiosensores estão equipados com sondas biorreceptoras imobilizadas, por exemplo, anticorpos, substrato de enzima. A excitação por laser é transmitida para o sistema fotométrico na forma de sinal óptico (fluorescência). Os nanobiosessores poderão revolucionar no futuro o diagnóstico de doenças. A presente revisão discute os conceitos básicos, a evolução e as aplicações biomédicas de nanobiosensores.Development of nanobiosensor is one of the most recent advancement in the field of Nanotechnology. Research on optical nanobiosensors with submicron-sized dimensions has opened new horizons for intracellular measurements. Taking advantage of the unique properties of the nanomaterials, faster and sensitive nanobiosensors can be developed. Apart from being sensitive and fast, the studies related to nanobiosensors have geared their efforts towards the development of nanomaterial-based sensors that are affordable, robust and reproducible. The nanobiosensors are equipped with immobilized bioreceptor probes, e.g., antibodies, enzyme substrate. Laser excitation is transmitted to photometric system in the form of optical signal (fluorescence). Nanobiosensors will revolutionize the future of disease diagnosis. The present review discusses the basic concepts, developments and the biomedical applications of nanobiosensors.

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“…TVA has many significant advantages compared to deposited thin films such as: (e) adhesiveness; (f) high deposition rate, etc [10][11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

ZnSe nanocrystalline thin films deposition on Si substrate by thermionic vacuum arc

Özkan

Ekem

Balbağ

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part L:

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ZnSe nanocrystalline thin films were deposited on Si wafer using thermionic vacuum arc (TVA) method. For the first time, binary semiconductor thin films were deposited by TVA. The microstructure and surface morphology of the ZnSe nanocrystalline thin films were investigated using X-ray diffractometry, scanning electron microscopy, energy-dispersive X-ray spectrometry, and atomic force microscopy (AFM). Grain dimensions and grain size were determined by AFM measurement. Moreover, spectroscopic ellipsometer was used to characterize the refractive indices of ZnSe nanocrystalline thin film. According to experimental measurement, ZnSe nanocrystalline thin film was polycrystalline with (1 1 1), (2 2 0), and (3 1 1) preferred orientations. Refractive indices were approximately 2.50 in all visible ranges. Our results show that nanocrystalline thin films can be deposited with TVA method.

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Diamond-like nanostructured carbon film deposition using thermionic vacuum arc

Cited by 36 publications

References 19 publications

Terawatt laser system irradiation of carbon/tungsten bilayers

Terawatt laser system irradiation of carbon/tungsten bilayers

Biomedical applications of nanobiosensors: the state-of-the-art

ZnSe nanocrystalline thin films deposition on Si substrate by thermionic vacuum arc

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