Electromagnetic Properties of Graphene-like Films in Ka-Band

Voronovich, Sofia; Paddubskaya, Alesya; Batrakov, Konstantin; Kuzhir, Polina; Maksimenko, Sergey; Kaplas, Tommi; Svirko, Yuri
June 2014
Applied Sciences (2076-3417);Jun2014, Vol. 4 Issue 2, p255
Academic Journal
We studied electromagnetic properties of pyrolytic carbon (PyC) films with thicknesses from 9 nm to 110 nm. The PyC films consisted of randomly oriented and intertwined graphene flakes with a typical size of a few nanometers were synthesized by chemical vapor deposition (CVD) at 1100 °C on a quartz substrate. The reflectance and transmittance of these films in Ka-band, 26--37 GHz, were studied both experimentally and theoretically. The discovered remarkably high absorption loss of up to 50% of incident power, along with chemical stability, makes PyC films attractive for electromagnetic (EM) interference shielding in space and airspace communication systems, as well as in portable electronic devices occupying this frequency slot. Since, in practical applications, the PyC film should be employed for coating of dielectric surfaces, two important issues to be addressed are: (i) which side (front or back) of the substrate should be covered to ensure maximum absorption losses; and (ii) the frequency dependence of absorbance/transmittance/reflectance of binary PyC/quartz structures in the Ka-band.


Related Articles

  • High-purity germanium-sulphide glass for optoelectronic applications synthesised by chemical vapour deposition. Huang, C.C.; Hewak, D.W. // Electronics Letters;7/8/2004, Vol. 40 Issue 14, p863 

    Germanium-sulphide glass has been fabricated directly by chemical vapour deposition in the form of thin films on semiconductor substrates and as a bulk glass. Analysis shows a high-purity amorphous material, which has high potential for the fabrication of the chalcogenide optical waveguides and...

  • Polyazomethine conjugated polymer film with second order nonlinear optical properties fabricated.... Tatsuura, Satoshi; Sotoyama, Wataru; Motoyoshi, Katsusada; Matsuura, Azuma; Hayano, Tomoaki; Yoshimura, Tetsuzo // Applied Physics Letters;5/3/1993, Vol. 62 Issue 18, p2182 

    Details the fabrication of polyazomethine head-to-tail conjugated polymer films. Use of chemical vapor deposition; Application of an electric field between slit-type electrodes; Formation of a channel wave guide.

  • Fabrication and structural properties of AlN submicron periodic lateral polar structures and waveguides for UV-C applications. Alden, D.; Guo, W.; Kirste, R.; Kaess, F.; Bryan, I.; Troha, T.; Bagal, A.; Reddy, P.; Hernandez-Balderrama, Luis H.; Franke, A.; Mita, S.; Chang, C.-H.; Hoffmann, A.; Zgonik, M.; Collazo, R.; Sitar, Z. // Applied Physics Letters;6/27/2016, Vol. 108 Issue 26, p261106-1 

    Periodically poled AlN thin films with submicron domain widths were fabricated for nonlinear applications in the UV-VIS region. A procedure utilizing metalorganic chemical vapor deposition growth of AlN in combination with laser interference lithography was developed for making a nanoscale...

  • The deviation of growth model for transparent conductive graphene. Chan, Shih-Hao; Chen, Jia-Wei; Chen, Hung-Pin; Wei, Hung-Sen; Li, Meng-Chi; Chen, Sheng-Hui; Lee, Cheng-Chung; Kuo, Chien-Cheng // Nanoscale Research Letters;Dec2014, Vol. 9 Issue 1, p1 

    An approximate growth model was employed to predict the time required to grow a graphene film by chemical vapor deposition (CVD). Monolayer graphene films were synthesized on Cu foil at various hydrogen flow rates from 10 to 50 sccm. The sheet resistance of the graphene film was 310Ω/□...

  • Graphene Electronics. WATTS, STEPHEN // IET Circuits, Devices & Systems;2015, Vol. 9 Issue 1, p1 

    An introduction to the periodical is presented which discusses several articles within the issue on topics which include use of graphene in electronic research, thermal properties of graphene and its use in thermal management of electronic and optoelectronic devices, and chemical vapour deposition.

  • Electro-optic polymer waveguide fabricated using electric-field-assisted chemical vapor deposition. Tatsuura, Satoshi; Sotoyama, Wataru // Applied Physics Letters;4/6/1992, Vol. 60 Issue 14, p1661 

    Examines the fabrication of an electro-optic polymer channel waveguide using an electric-field-assisted chemical vapor deposition (E-CVD). Aim of E-CVD; Advantages of using E-CVD; Effects of an applied electric field during deposition.

  • Direct writing of GaAs optical waveguides by laser-assisted chemical vapor deposition. Boutros, K.S.; Roberts, J.C. // Applied Physics Letters;4/8/1996, Vol. 68 Issue 15, p2041 

    Demonstrates the direct writing of GaAs waveguide structures by selective area deposition using laser-assisted chemical vapor deposition (LCVD). Characteristics of the multimode waveguides; Capability of the LCVD technique; Importance of the device for optoelectronic integrated circuits.

  • THIN FILMS OF ADVANCED MATERIALS VIA CCVD. Shanmugham, Subu; Hunt, Andrew; Motley, David // American Ceramic Society Bulletin;May2002, Vol. 81 Issue 5, p36 

    Examines the functions of thin films in coatings. Methods in depositing thin films; Mechanism of gas-phase chemical techniques; Features and benefits of combustion chemical vapor deposition.

  • One-step growth of thin film SnS with large grains using MOCVD. Clayton, Andrew J.; Charbonneau, Cecile M. E.; Tsoi, Wing C.; Siderfin, Peter J.; Irvine, Stuart J. C. // Science & Technology of Advanced Materials;2018 PV2, Vol. 19, p153 

    Thin film tin sulphide (SnS) films were produced with grain sizes greater than 1 µm using a one-step metal organic chemical vapour deposition process. Tin-doped indium oxide (ITO) was used as the substrate, having a similar work function to molybdenum typically used as the back contact, but...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics