1,720,979 research outputs found
Microcrystalline Diamond Deposition On A Porous Silicon Host Matrix
No full textPorous silicon (PS) is a nanostructured material obtained by etching pores into crystalline Si wafers. In this paper, we report on the nucleation and growth of diamond on very thick PS films (130-220 μm) of very high porosity (10-50%). The edges of the pores were in the form of small crosses, which followed the original directions of the 〈100〉c-Si. The diamond coating was made by chemical vapor deposition (CVD) in a hot-filament reactor. We observed that the diamond nucleation occurs mainly at the edges of the pores but relatively few nuclei follow a preferential orientation axis. As the nucleation density is very low, coalescence does not occur even after 11 h and 30 min of deposition. Using a pre-deposition `seeding' process with diamond grains, it was possible to produce a complete diamond CVD coating. A cross-section analysis of the diamond/PS/c-Si structure by scanning electron microscopy (SEM), micro-Raman and photoluminescence spectroscopies revealed interesting results: the luminescence of the PS under the diamond layer is preserved. There is no diamond deposition inside of the pores, but a small permeation of carbon was identified which forms diamond-like phases at the bottom of the pores. The Raman analyses indicated also a small contamination of the diamond layer by Si nano-crystals.69171176Canham, L.T., (1990) Appl. Phys. Lett., 57, p. 1406Angus, J.C., Hayman, C.C., (1988) Science, 241, p. 913Ke, G.Q., Xing, Z.J., Yin, X.T., Chen, K.T., Shen, Y.H., Huang, Y.P., Xu, J.Z., (1992) Vacuum, 43 (11), p. 1043Liu, Z., Zong, B.Q., Lin, Z., (1995) Thin Solid Films, 254, p. 3Lyer, S.B., Srinivas, S., (1997) Thin Solid Films, 305, p. 259Baranauskas, V., Chang, D.C., Li, B.B., Peterlevitz, A.C., Trava-Airoldi, V.J., Corat, E.J., Singh, R.K., Lee, D.-G., (2000) J. Porous Mater., 7, p. 401Baranauskas, V., Li, B.B., Peterlevitz, A.C., Trava-Airoldi, V.J., Corat, E.J., Singh, R.K., (1998) 14th International Vacuum Congress, , Birmingham, UKBaranauskas, V., Li, B.B., Peterlevitz, A.C., (1998) Diamond Science and Technology, la Jolla International School of Physics, 10 (12). , Bulletin of the Stefan UniversityBaranauskas, V., Peled, A., Trava-Airoldi, V.J., Lima, C.A.S., Doi, I., Corat, J., (1994) Appl. Surf. Sei., 79-80, p. 129Baranauskas, V., Li, B.B., Peterlevitz, A.C., Tosin, M.C., Durrant, S.F., (1999) Thin Solid Films, 351, p. 1Davies, G., Collins, A.T., (1993) Diam. Rel. Mater., 2, p. 8
Characterization Of Boron Doped Nanocrystalline Diamonds
Get PDFNanostructured diamond doped with boron was prepared using a hot-filament assisted chemical vapour deposition system fed with an ethyl alcohol, hydrogen and argon mixture. The reduction of the diamond grains to the nanoscale was produced by secondary nucleation and defects induced by argon and boron atoms via surface reactions during chemical vapour deposition. Raman measurements show that the samples are nanodiamonds embedded in a matrix of graphite and disordered carbon grains, while morphological investigations using field electron scanning microscopy show that the size of the grains ranges from 20 to 100 nm. The lowest threshold fields achieved were in the 1.6 to 2.4 V/μm range. © 2008 IOP Publishing Ltd.100PART 5Himpsel, F.J., Knapp, J.A., VanVechten, J.A., Eastman, P.E., (1979) Phys. Rev., 20 B, p. 624Bandis, B., Pate, B.B., (1996) Appl. Phys Lett., 69, p. 366Mammana, V.P., Santos, T.E.A., Mammana, A., Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., (2002) Appl. Phys. Lett., 81, p. 3470Baranauskas, V., Fontana, M., Ceragioli, H.J., Peterlevitz, A.C., (2004) Nanotech., 15 (10), pp. S678Shroder, R.E., Nemanich, R.J., Glass, J.T., (1990) Phys. Rev., 41 B, p. 3738Ferrari, A.C., Robertson, J., (2001) Phys. Rev., 63 B. , 121405(R)Jiang, X., Frederick, C.K.Au., Lee, S.T., (2002) J. Appl. Phys., 92 (5), p. 2880Lee, Y.C., Lin, S.J., Lin, I.N., Cheng, H.F., (2005) J. Appl. Phys., 97, p. 05431
Micro-crystalline Diamond And Nano-carbon Structures Produced Using A High Argon Concentration In Hot-filament Chemical Vapor Deposition
No full textThe carbon structures and micro-crystalline diamond produced using argon in high concentrations in a hot-filament chemical vapor deposition (CVD) reactor fed with a mixture of ethanol and hydrogen were studied. Well faceted diamond films with vertical flaws, layered structures with diamond-like carbon (DLC) balls and spongy structures of carbon wires were obtained using the method. Argon was found to minimize the growth rate of hydrogenated materials formed in the intergranular spaces of columnar CVD diamond films and at the interstitial sites of deposited carbon-nuclei structures. Modified kinetics of the carbon deposition process, increase in number of flaws between the diamond grains and increased porosity was observed due to the action of argon.19410571062Angus, J.C., Hayman, C.C., (1988) Science, 241, p. 913Yarborough, W.A., Messier, R., (1990) Science, 241, p. 688Derjaguin, B.V., Fedoseev, D., (1977) Izd., , Nauka, Moscow, Chap. 4Zhu, W., Inspektor, A., Badzian, A.R., McKenna, T., Messier, R., (1990) J. Appl. Phys., 68, p. 1489Shih, H.C., Sung, C.P., Fan, W.L., (1992) Surf. Coat. Technol., 54-55, p. 380Matsumoto, O., Toshima, H., Kanzaki, Y., (1985) Thin Solid Films, 128, p. 341Matsumoto, O., Katagiri, T., (1987) Thin Solid Films, 146, p. 283Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., Tosin, M.C., Durrant, S.F., (2000) Thin Solid Films, 377-378, p. 303Baranauskas, V., Peled, A., Trava-Airoldi, V.J., Lima, C.A.S., Doi, I., Corat, E.J., (1994) Appl. Surf. Sci., 79-80, p. 129Barros, R.C.M., Corat, E.J., Ferreira, N.G., Souza, T.M., Trava-Airoldi, V.J., Leite, N.F., Iha, K., (1996) Diamond Relat. Mater., 5, p. 1323Condon, E.U., Odishaw, H., (1967) Handbook of Physics, , McGraw-Hill, New York, Chap. 5, Table 5.1Thareja, R.K., Dwivedi, R.K., Abbilasha, (1997) Phys. Rev. B, 55, p. 2600Nemanich, R.J., Solin, S.A., (1979) Phys. Rev. B, 20, p. 392Yoshikawa, M., Katagiri, G., Ishida, H., Ishitani, A., Ono, M., Matsumura, K., (1989) Appl. Phys. Lett., 55, p. 2608Obraztsova, E.D., Fujii, M., Hayashi, S., Kuznetsov, V.L., Butenko, Yu.V., Chuvlinin, A.L., (1998) Carbon, 36, p. 821Li, W., Zhang, H., Wang, C., Zhang, Y., Xy, L., Zhu, K., Xie, S., (1997) Appl. Phys. Lett., 70, p. 2684Zhao, X., Ando, Y., (1998) Jpn. J. Appl. Phys., Part 1, 37, p. 4846Lander, J.J., Morrison, J., (1964) Surf. Sci., 2, p. 241Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., Tosin, M.C., Durrant, S.F., (2000) Thin Solid Films, 377-388, p. 182Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., Durrant, S.F., Diamond Relat. Mater., , acceptedThornton, J.A., (1974) J. Vac. Sci. Technol., 11, p. 666Beale, H.A., Grossklaus, W., (1977) Thin Solid Films, 12, p. 281Thornton, J.A., (1977) Annu. Rev. Mater. Sci., 7, p. 239Shaldervan, A.I., Nakhodin, N.G., (1971) Sov. Phys. Solid State, 12, p. 1748Thornton, J.A., Hedgcoth, V.L., (1975) J. Vac. Sci. Technol., 12, p. 93Holman, W.R., Huegel, F.J., (1974) J. Vac. Sci. Technol., 11, p. 701Feist, W.M., Steele, S.R., Readey, D.W., (1969) Physics of Thin Films, 5, p. 237. , edited by G. Hass (Academic, New York
Growth And Characterization Of Carbon Nanofibers By A Technique Of Polymer Doped Catalyst And Hot-filament Chemical Vapor Deposition
No full textCarbon nanostructures have been prepared from the catalytic conversion of polyethylene glycol using a rapid immersion in hot-filament system fed with ethanol, hydrogen and argon. Fiber structures of external diameter about 30 nm have been observed by field emission scanning electron microscopy (FESEM). Raman measurements indicate high degree of C-C sp2 ordering which suggests that the samples correspond to CNTs of good tube crystallinity. The samples presented remarkable field emission properties. Lowest threshold field achieved for electron emission was 1.0 V/μm. © 2008 Elsevier Ltd. All rights reserved.832273275Bonard, J.M., Kind, H., Stöckli, T., Nilsson, L.O., (2001) Solid-State Electron, 45, p. 893Journet, C., Bernier, P., (1998) Appl Phys A, 67, p. 1Morell, G., González-Berríos, A., Weiner, B.R., Gupta, S., (2006) J Mater Sci Mater Electron, 17, p. 443Koeck, F.A.M., Zumer, M., Nemanic, V., Nemanich, R.J., (2006) Diamond Relat Mater, 15, p. 880Andreatta, A., Cao, Y., Chiang, J.C., Heger, A.J., (1988) Synth Met, 26, p. 383Nickels, P., Dittimer, W.U., Beyer, S., Kottahous, J.P., Simmel, F.C., (2004) Nanotechnology, 15, p. 1524Zhang, M.Y., Kaner, R.B., (2004) J Am Chem Soc, 126, p. 7097Hiura, H., Ebbensen, T.W., Tanigaki, K., Takahashi, H., (1993) Chem Phys Lett, 202, p. 509Morjan, R.E., Nerushev, O.A., Sveningsson, M., Rohmund, F., Falk, L.K.L., Campbell, E.E.B., (2004) Appl Phys A, 78, p. 253Mammana, V.P., Monteiro, O.R., Fonseca, L.R.C., (2004) J Vac Sci Technol B, 22, p. 715Dimitrijevic, S., Whiters, J.C., Mammana, V.P., Monteiro, O.R., Ager, J.W., Brown, I.G., (1999) Appl Phys Lett, 75, p. 2680Mammana, V.P., Degasperi, F.T., Monteiro, O.R., Vuolo, J.H., Salvadori, M.C., Brown, I.G., (2000) J Vac Sci Technol A, 18, p. 1818Mammana, V.P., Anders, S., Monteiro, O.R., Salvadori, M.C., (2000) J Vac Sci Technol B, 18, p. 2415Mammana, V.P., Santos, T.E.A., Mammana, A., Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., (2002) Appl Phys Lett, 81, p. 3470Baranauskas, V., Fontana, M., Ceragioli, H.J., Peterlevitz, A.C., (2004) Nanotechnology, 15 (10), pp. S678Kurt, R., Bonard, J.M., Karimi, A., (2001) Diamond Relat Mater, 10, p. 1962Gupta, S., Weiner, B.R., Morell, G., (2002) Diamond Relat Mater, 11, p. 799Wu, K., Wang, E.G., Cao, Z.X., Wang, Z.L., Jiang, X., (2000) J Appl Phys, 88, p. 2967Proffitt, S.S., Probert, S.J., Whitfield, M.D., Foord, J.S., Jackman, R.B., (1999) Diamond Relat Mater, 8, p. 76
Properties Of Carbon Nanostructures Prepared By Polyaniline Carbonization
Get PDFNanometric sponge-like structures have been prepared from the carburization of polyaniline-(emeradine salt) using a rapid immersion in hot-filament system fed with carbon dioxide, ethyl alcohol and argon. Fiber-like fragments of width in the range of 20 - 40 nm have been observed by field emission scanning electron microscopy (FESEM). Raman measurements suggested that benzenoid rings and amide were present in the carburized samples. Lowest threshold achieved for field emission was 23.5 V/μm. © 2007 IOP Publishing Ltd.6117174Bonard, J.M., Kind, H., Stöckli, T., Nilsson, L.O., (2001) Sol. State Electron., 45 (6), p. 893Journet, C., Bernier, P., (1998) Appl. Phys., 67 (1), p. 1Morell, G., Gonzlez-Berríos, A., Weiner, B.R., Gupta, S., (2006) J. Mater. Sci: Mater. Electron, 17 (6), p. 443Koeck, F.A.M., Zumer, M., Nemanic, V., Nemanich, R.J., (2006) Diam. Rel. Mater., 15 (4-8), p. 880Andreatta, A., Cao, Y., Chiang, J.C., Heger, A.J., (1988) Synth. Met., 26 (4), p. 383Konyushenko, E.N., Stejskal, J., Trchov, M., Hradil, J., Kovrov, J., Prokes, J., Cieslar, M., Sapurina, I., (2006) PolymerNastase, C., Nastase, F., Vaseashta, A., Stamatin, I., (2006) Prog. Sol. Sta. Chem., 34 (2-4), p. 181Mottaghittalab, V.B., Spinks, G.M., Wallace, G.G., (2006) Synth. Met.Nickels, P., Dittimer, W.U., Beyer, S., Kottahous, J.P., Simmel, F.C., (2004) Nanotech., 15 (11), p. 1524Zhang, M.Y., Kaner, R.B., (2004) J. Am. Chem. Soc., 126 (22), p. 7097Baibarac, M., Baltog, I., Lefrand, S., Mevellec, J.Y., Chauvet, O., (2003) Chem. Mater., 15 (21), p. 4149Quillard, S., Loaurn, G., Lefrant, S., MacDiamird, A.G., (1994) Phys. Rev., 50 (17), p. 12496Mammana, V.P., Santos, T.E.A., Mammana, A., Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., (2002) Appl. Phys. Lett., 81 (18), p. 3470Baranauskas, V., Fontana, M., Ceragioli, H.J., Peterlevitz, A.C., (2004) Nanotech., 15 (10), p. 678Kurt Bonard, R.J.M., Karimi, A., (2001) Diam.Rel. Mater., 10 (11), p. 1962Gupta Weiner, S.B.R., Morell, G., (2002) Diam. Rel. Mater., 11 (3-6), p. 799Wu, K., Wang, E.G., Cao, Z.X., Wang, Z.L., Jiang, X., (2000) J. Appl. Phys., 88 (5), p. 2967Proffitt, S.S., Probert, S.J., Whitfield, M.D., Foord, J.S., Jackman, R.B., (1999) Diam. Rel. Mater., 8 (2-5), p. 76
Growth Of Glassy Carbon On Natural Fibers
No full textDiamond-like carbon films were grown on pyrolised bamboo substrates by hot filament-chemical vapor deposition from ethanol/hydrogen mixtures. Different stages of deposition of films grown on untreated substrates and substrates seeded with diamond dust were compared. Changes in film morphology and structure under changes in these parameters were investigated using scanning electron microscopy and Raman spectroscopy. Diamond-like carbon (DLC) with ball-like morphology on the micrometer scale and glassy DLC with a stacked planar structure were observed for depositions of > 2 h on unseeded and seeded substrates, respectively. Gasification of the fibers by hydrogen in the early stages of growth may play a role in film growth, but this requires further study. Nevertheless, DLC films can be grown on pyrolised bamboo substrates, which suggests that other carbonaceous substrates for film fabrication by hot-filament chemical vapor deposition also merit systematic investigation. © 2002 Elsevier Science B.V. All rights reserved.3041-3271277Kojima, A., Matsumoto, H., Kamiishi, Y., Sato, M., Otani, S., (2000) Sen-I Gakkaishi, 56 (2), p. 574Bessette, R.R., Medeiros, M.G., Patrissi, C.J., Deschenes, C.M., LaFrata, C.N., (2001) J. Power Sources, 96 (1), p. 240Sea, B.K., Choo, S.Y., Lee, T.J., Morooka, S., Song, S.K., (1995) Kor. J. Chem. Eng., 12 (4), p. 416Edie, D.D., (1998) Carbon, 36 (4), p. 345Takida, T., Inoue, K., Kimura, H., Kiyota, H., Saito, I., Kurusu, T., Iida, M., (2000) New Diamond Frontier Carbon Res., 10 (1), p. 50Wang, Y.Q., Zhou, B.L., Wang, Z.M., (1995) Carbon, 33 (4), p. 427Peherson, P.E., Glesener, J., Morrish, A., (1992) Thin Solid Films, 212 (1-2), p. 81Nakamura, Y., Tamaki, K., Watanabe, Y., Hirayama, S., (1994) J. Mater. Res., 9 (7), p. 1619Gruen, D.M., (1999) Annu. Rev. Mater. Sci., 29, p. 211Corat, E.J., Trava-Airoldi, V.J., Baranauskas, V., (1998) Key Eng. Mat., 138 (1), p. 195Baranauskas, V., Tosin, M.C., Peterlevitz, A.C., Ceragioli, H.J., Durrant, S.F., (2000) J. Appl. Phys., 88 (3), p. 1650Barros, R.C.M., Corat, E.J., Ferreira, N.G., Souza, T.M., Trava-Airoldi, V.J., Leite, N.F., Iha, K., (1996) Diam. Rel. Mater., 5, p. 1323Baranauskas, V., Peterlevitz, A.C., Ceragioli, H.J., Durrant, S.F., (2001) J. Vac. Sci. Tech. A, 19 (4), p. 1057Thareja, R.K., Dwivedi, R.K., Abhilasha, (1997) Phys. Rev. B, 55 (4), p. 2600Nemanich, R.J., Solin, S.A., (1979) Phys. Rev. B, 20, p. 392Yoshikawa, M., Katagiri, G., Ishida, H., Ishitani, A., Ono, M., Matsumura, K., (1989) Appl. Phys. Lett., 55, p. 2608Ferrari, A.C., Robertson, J., (2001) Phys. Rev. B, 63, p. 63Shroder, R.E., Nemanich, R.J., Glass, J.T., (1990) Phys. Rev. B, 41, p. 3738Okada, K., Kanda, H., Komatsu, S., Matsumoto, S., (2000) J. Appl. Phys, 88, p. 1674Suzuki, T., Yagi, M., Shibuki, K., Hasemi, M., (1994) Appl. Phys. Lett., 65 (5), p. 540Li, Z.D., Wang, L., Suzuki, T., Argoitia, A., Pirouz, P., Angus, J.C., (1993) J. Appl. Phys., 73 (2), p. 715Lambrecht, W.R.L., Lee, C.H., Segall, B., Angus, J.C., Li, Z.D., Sunkara, M., (1993) Nature, 364 (6438), p. 60
Magnetic And Cytotoxic Properties Of Hot-filament Chemical Vapour Deposited Diamond
No full textMicrocrystalline (MCD) and nanocrystalline (NCD) magnetic diamond samples were produced by hot-filament chemical vapour deposition (HFCVD) on AISI 316 substrates. Energy Dispersive X-ray Spectroscopy (EDS) measurements indicated the presence of Fe, Cr and Ni in the MCD and NCD samples, and all samples showed similar magnetisation properties. Cell viability tests were realised using Vero cells, a type of fibroblastic cell line. Polystyrene was used as a negative control for toxicity (NCT). The cells were cultured under standard cell culture conditions. The proliferation indicated that these magnetic diamond samples were not cytotoxic. © 2012 Elsevier B.V.32823402343May, P.W., (2000) Philos. Trans. R. Soc. A, 358, pp. 473-495Kohn, E., Gluche, P., Adamschik, M., (1999) Diamond Relat. Mater., 8, pp. 934-940Rodrigues, A.A., Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., Belangero, W.D., (2010) Diamond Relat. Mater., 19, pp. 1300-1306Kumar, R.R., Ryeol, L.K., (2007) J. Biomed. Mater. Res. B Appl. Biomater., 83 B, pp. 72-84Torricelli, A.K., Almeida, K.C.D., Ceragioli, H.J., Baranauskas, V., Sabha, M., Brocchi, M., Shishido, S.M., Hollanda, L.M., (2011) Eur. J. Cancer, 47, pp. 148-S149Rodrigues, A.A., Batista, N.A., Bauaresco, V.P., Vanessa, P., Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., Belangero, W.D., (2012) Carbon, 50, pp. 2091-2099Balasubramanian, G., Neumann, P., Twitchen, D., Markham, M., Kolesov, R., Mizuochi, N., Isoya, J., Wrachtrup, J., (2009) Nat. Mater., 8, pp. 383-387Makarova, T.L., (2004) Semiconductors, 38, pp. 615-638Schrand, A.M., Hens, S.A.C., Shenderova, O.A., (2009) Crit. Rev. Solid State Mater. Sci., 34, pp. 18-74Grausova, L., Bacakova, L., Kromka, A., Potocky, S., Vanecek, M., Nesladek, M., Lisa, V., (2009) J. Nanosci. Nanotechnol., 9, pp. 3524-3534Anke, K., Daniel, L., (2012) Adv. Funct. Mater., 22, pp. 890-906Alhaddad, A., Adam, M.P., Botsoa, J., Dantelle, G., Perruchas, S., Gacoin, T., Mansuy, C., Bertrand, J.R., (2011) Small, 7, pp. 3087-3095Soenen, S.J., Himmelreich, U., Nuytten, N., De Cuyper, M., (2011) Biomaterials, 32, pp. 195-205Soenen, S.J., Nuytten, N., De Meyer, S.F., De Smedt, S.C., De Cuyper, M., (2010) Small, 6, pp. 832-842Weinstein, J.S., Varallyay, C.G., Dosa, E., Gahramanov, S., Hamilton, B., Rooney, W.D., Muldoon, L.L., Neuwelt, E.A., (2010) J. Cereb. Blood Flow Metab., 30, pp. 15-35Lobo, A.O., Antunes, E.F., MacHado, A.H.A., Pacheco-Soares, C., Trava-Airoldi, V.J., Corat, E.J., (2008) Mater. Sci. Eng. C, 28, pp. 264-269Mossmam, T.J., (1983) J. Immunol. Methods, 65, pp. 55-63Ferrari, A.C., Robertson, J., (2001) Phys. Rev. B, 63, p. 121405Buhl, S., Leinenbach, C., Spolenak, R., Wegener, K., (2012) Int. J. Refract. Met. Hard Mater, 30, pp. 16-2
Field-emission Properties Of Sulphur Doped Nanocrystalline Diamonds
Get PDFNanostructured diamond doped with sulphur has been prepared using a hot-filament assisted chemical vapour deposition system fed with an ethyl alcohol, carbon disulfide, hydrogen, and argon mixture. The reduction of diamond grains to the nanoscale is relevant to create a network of defective grain boundaries which may be n-type doped to facilitate the transport and injection of electrons to the diamond grains located at the vacuum interface, enhancing the electron field-emission properties of the samples. The downsizing was produced by secondary nucleation and defects induced by sulphur and argon atoms in the chemical vapour deposition surface reactions. Sulphur also acts as an n-type dopant of diamond. Raman measurements show that the samples are nanodiamonds embedded in a matrix of graphite and disordered carbon grains and the morphology, revealed by field electron scanning microscopy, shows that the grains are in the range of 10 to 30 nm. The lowest threshold achieved for field emission was 13.20 V/μm. © 2007 IOP Publishing Ltd.6116670Yang, A.T.S., Lay, J.Y., Wong, M.S., Cheng, C.L., (2002) J. Appl. Phys., 92 (4), p. 2133Mammana, V.P., Tea, S., Mammana, A., Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., (2002) Appl. Phys. Lett., 81 (18), p. 3470Baranauskas, V., Fontana, M., Ceragioli, H.J., Peterlevitz, A.C., (2004) Nanotech., 15 (10), p. 678Gruen, D.M., (1998) MRS Bull., 9, p. 32Jin, B.M., Kim, C.C., (1997) Appl. Phys. A: Solid Surf., 65 (1), p. 53Himpsel, F.J., Knapp, J.A., Vanvechten, J.A., Eastman, P.E., (1979) Phys. Rev., 20 (2), p. 624Bandis, B., Pate, B.B., (1996) Appl. Phys Lett., 69 (3), p. 366Okano, K., Yamada, T., Suave, A., Koizumi, S., Pate, B.B., (1999) Appl. Surf. Sci., 146 (1-4), p. 274Kurt Bonard, R.J.M., Karimi, A., (2001) Diam. Rel. Mater., 10 (11), p. 1962Bonnot, A.M., Deldem, M., Beaugnon, M., Fournier T.schouler, M.C., Mermoux, M., (1999) Diam. Rel. Mater., 8 (2-5), p. 631Gruen, D.M., Liu, S., Krauss, A.R., Liuy, A., Luo, J., Foster, C.M., (1994) J. Vac. Sci. Technol., 12 (4), p. 1491Gupta Weiner, S.B.R., Morell, G., (2002) Diam. Rel. Mater., 11 (3-6), p. 799Gupta Weiner, S.B.R., Morell, G., (2005) J. Appl. Phys., 97, p. 094307Morell, G., Gonzlez-Berríos, A., Weiner, B.R., Gupta, S., (2006) J. Mater. Sci: Mater. Electron, 17 (6), p. 443Koeck, F.A.M., Zumer, M., Nemanic, V., Nemanich, R.J., (2006) Diam. Rel. Mater., 15 (4-8), p. 880Shroder Nemanich, R.E.R.J., Glass, J.T., (1990) Phys. Rev., 41 (6), p. 3738Birrell, J., Gerbi, J.E., Auciello, O., Gibson, J.M., Johnson, J., Carlisle, J.A., (2005) Diam. Rel. Mater., 14 (1), p. 86Ferrari, A.C., Robertson, J., (2001) Phys. Rev., 63, pp. 121405RWu, K., Wang, E.G., Cao, Z.X., Wang, Z.L., Jiang, X., (2000) J. Appl. Phys., 88 (5), p. 2967Proffitt, S.S., Probert, S.J., Whitfield, M.D., Foord, J.S., Jackman, R.B., (1999) Diam. Rel. Mater., 8 (2-5), p. 76
Fabrication Of Tubes Of Diamond With Micrometric Diameters And Their Characterization
No full textThe fabrication and characterization of 'self-supporting' diamond tubes grown by chemical vapor deposition (CVD) are reported. Diamond layers were deposited onto tungsten wires with diameters of 238 μm; the tungsten cores were subsequently completely removed by etching to leave 'self-supporting' diamond tubes with a diameter of approximately 400 μm and length of 20 mm. A hot-filament CVD system fed with ethanol highly diluted in hydrogen was employed. Growth rates of 7.8 μm h-1 have been measured and incubation times >3 h have been estimated. Scanning electron microscopy of cross-sections revealed columnar structures, which terminate on sharp (111) facets on the tube's external surface. Raman spectroscopy showed that the tube structure is predominantly composed of C-C sp3 bonds, with intrinsic tensile stresses. © 2002 Elsevier Science B.V. All rights reserved.420-421151154Angus, J.C., Hayman, C.C., (1988) Science, 241, p. 913Yarborough, W.A., Messier, R., (1990) Science, 241, p. 688Corat, E.J., Trava-Airoldi, V.J., Baranauskas, V., (1998) Key Eng. Mater., 138 (1), p. 195Morrish, A.A., Glesener, J.W., Fehrenbacher, M., Person, P.E., Maruyama, B., Natishan, P.M., (1994) Diamond Relat. Mater., 3, p. 173May, P.W., Rego, C.A., Thomas, R.M., Ashfold, M.N.R., Rosser, K.N., Everitt, N.M., (1994) Diamond Relat. Mater., 3, p. 810Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., Durrant, S.F., (2001) Thin Solid Films, 398, p. 250Baranauskas, V., Peled, A., Trava-Airoldi, V.J., Lima, C.A.S., Doi, I., Corat, E.J., (1994) Appl. Surf. Sci., 79-80, p. 129Barros, R.C.M., Corat, E.J., Ferreira, N.G., Souza, T.M., Trava-Airoldi, V.J., Leite, N.F., Iha, K., (1996) Diamond Relat. Mater., 5, p. 1323Whitfield, M.D., Savage, J.A., Jackman, R.B., (2000) Diamond Relat. Mater., 9, p. 262Zhu, W., McCune, R.R., DeVries, J.E., Tamor, M.A., Simon Ng, K.Y., (1995) Diamond Relat. Mater., 4, p. 220Shi, C.R., Avyigal, Y., Dirnfeld, S., Hoffman, A., Fayer, A., Kalish, R., (1995) Diamond Relat. Mater., 4, p. 1079Stoner, B.R., Ma, G.H.M., Wolter, S.D., Glass, J.T., (1992) Phys. Rev. B, 45, p. 11067Trava-Airoldi, V.J., Corat, E.J., Pena, A.F., Leite, N.F., Valera, M.C., Freitas, J.R., Baranauskas, V., (1996) Rev. Sci. Instrum., 67 (5), p. 1993Trava-Airoldi, V.J., Corat, E.J., Penã, A.F.V., Leite, N.F., Baranauskas, V., (1995) Diamond Relat. Mater., 4 (11), p. 125
Nanostructured Diamond And Diamond-like Materials For Application In Field-emission Devices
No full textNanostructured diamond and diamond-like materials having good field electron emission properties have been prepared using a hot-filament assisted chemical vapour deposition system fed with ethanol/hydrogen/helium mixtures. The changes in the structure of the samples were determined by the hydrogen content in the gas mixture and varied from samples of nanocrystalline diamond with graphitic connection between the grains (for helium concentration 40 vol%). Although the samples had such structural differences, low threshold values for electron field emission in vacuum were observed for representative samples of low and high hydrogen concentrations in the gas feed.1510S678S683Yang, T.-S., Lay, J.-Y., Wong, M.-S., Cheng, C.-L., (2002) J. Appl. Phys., 92, p. 2133Mammanav, P., Santos, T.E.A., Mammana, A., Baranauskas, V., Ceragioli, H.J., Peterlevitz, A.C., (2002) Appl. Phys. Lett., 81, p. 3470Gruen, D.M., (1998) MRS Bull, 9, p. 32Jin, B.M., Kim, J., Kim, C.C., (1997) Appl. Phys. A, 65, p. 53Himpsel, F.J., Knapp, J.A., Vanvechten, J.A., Eastman, P.E., (1979) Phys. Rev. B, 20, p. 624Bandis, C., Pate, B.B., (1996) Appl. Phys. Lett., 69, p. 366Okano, K., Yamada, T., Suave, A., Koizumi, S., Pate, B.B., (1999) Appl. Surf. Sci., 146, p. 274Kurt, R., Bonard, J.-M., Karimi, A., (2001) Diamond Relat. Mater., 10, p. 1962Bonnot, A.M., Deldem, M., Beaugnon, E., Fournier, T., Schouler, M.C., Mermoux, M., (1999) Diamond Relat. Mater., 8, p. 631Gruen, D.M., Liu, S., Krauss, A.R., Liuy, A., Luo, J., Foster, C.M., (1994) J. Vac. Sci. Technol., A12, p. 1491Lin, T., Yu, G.Y., Wee, A.T.S., Shen, Z.X., (2000) Appl. Phys. Lett., 77, p. 2692Zhou, D., McCauley, T.G., Qin, L.C., Krauss, A.R., Gruen, M., (1998) J. Appl Phys., 83, p. 540Sun, Z., Shi, J.R., Tay, B.K., Lau, S.P., (2000) Diamond Relat. Mater., 9, p. 1979McGinnis, S.P., Kelly, M.A., Hagström, S.B., Alvis, R.L., (1996) J. Appl. Phys., 79, p. 170Jiang, X., Jia, C.L., (2002) Appl. Phys. Lett., 80, p. 2269Wu, K., Wang, E.G., Cao, Z.X., Wang, Z.L., Jiang, X., (2000) J. Appl. Phys., 88, p. 2967Proffitt, S.S., Probert, S.J., Whitfield, M.D., Foord, J.S., Jackman, R.B., (1999) Diamond Relat. Mater., 8, p. 768Baranauskas, V., Peled, A., Trava-Airoldi, V.J., Lima, C.A.S., Doi, I., Corat, E.J., (1994) Appl. Surf. Sci., 79-80, p. 129Patterson, J.R., Kudryavtsev, A., Vohra, Y.K., (2002) Appl. Phys. Lett., 81, p. 2073Bonard, J.-M., Kind, H., Stöckli, T., Nilson, L.O., (2001) Solid-state Electron., 45, p. 89
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