Epitaxial graphene synthesis, characterization, and devices

... layer graphene Unlike the linear energy band structure of single layer graphene, bilayer graphene has a parabolic energy band structure.18 A gap can open between the conduction band and valence band.22 ... molecular plane and hybridizes to form π (valence band) and π* (conduction band) bands The bands form conical valleys that touch at two of high-symmetry points, conventionally la...

Ngày tải lên: 09/09/2015, 10:07

... Semiconductor Nanowires for Future Nanoscale Application: Synthesis, Characterization, and Nanoelectronic Devices YANG WEIFENG B Sci (Fudan University, P R China) 2005 A THESIS SUBMITTED FOR ... metal and an n-type semiconductor in the absence of surface states At the far left, the metal and semiconductor are not in contact and the system is not in thermal equi...

Ngày tải lên: 14/09/2015, 08:45

... single step process using thermal evaporation of silicon monoxide under argon atmosphere with traces of oxygen The nanowires were free from metal contaminations and showed blue photoluminescence at ... its simplicity and the low cost Conclusions Amorphous silicon dioxide nanowires of several hundred microns in length and tens of nanometers in diameter have been...

Ngày tải lên: 16/03/2014, 15:18

... lower hydrolysis rates were the two triphosphate analogues with b,c-substitutions GppCH2p and GppNHp The Ras-catalysed hydrolysis rate of GTPcNH2 finally lay midway between the rates for GTPcS and ... c-Fluoroadenosine triphosphate Synthesis, properties, and interaction with myosin and heavy meromyosin Biochemistry 11, 2863–2871 34 Pfeuffer, T & Eckstein, F (1976) Topology...

Ngày tải lên: 18/03/2014, 01:20

... condition of the microspheres shown in Fig 1c The surface of microspheres was made of a number of small subunits, each of which is like a tetrahedron crystal in shape and uniform in size and packed ... formation of homogeneous and tight Fe3O4 In contrast, pH values in NaOH system changed all through and decreased with the nucleation time of forming Fe3O4, and fu...

Ngày tải lên: 20/03/2014, 13:08

... surface resulting in the band bending of the conduction band (C.B) and the valence band (V.B) Formation of large number of ionized www.intechopen.com ZnO Nanorods Arrays and Heterostructures for ... conduction band of ZnO by ZnO band edge absorption and electron transport via Au NPs (Dhara & Giri, unpublished) Fig 20 Photocurrent spectra of the as–grown NRs and Au NPs decorate...

Ngày tải lên: 28/04/2014, 13:15

... mechanism of ZnO nanorods fabricated by the aqueous solution method The proposed mechanism includes three steps: (1) fine and independent ZnO nanorods grew and bundled together (2) fine ZnO nanorods ... some ZnO nanorods not vertically align very well and they are inclined to the substrate surface Figure shows the average diameters and lengths versus growth time and...

Ngày tải lên: 28/04/2014, 13:15

... fundamentals and applications of nanosciences and nanotechnologies The methods described in this book are very powerful and have practical applications in the subjects of nanorods The potential applications ... gaps between nanorods were set to be 0, 5, and 10 nm along the x and y axes in Figs 5(a), 5(b), and 5(c), respectively Fig Unit cell structures and the optical...

Ngày tải lên: 28/04/2014, 13:15

... UV absorption ZnO is a biosafe and biocompatible material that has many applications, such as in electronics and biomedical and coating technologies A reduction in size of the ZnO particle to ... vertically aligned ZnO nanorod arrays Materials Chemistry and Physics, Vol.122, No.1, pp.18, ISSN 0254-0584 Lupan, O.; et al (2007) Nanofabrication and characterization of ZnO na...

Ngày tải lên: 28/04/2014, 13:15

... Pastoriza-Santos, L M Liz-Marzàn, and P Mulvaney “Gold nanorods: Synthesis, characterization and applications , Coordination Chemistry Reviews, vol 249, 2005, pp 1870-1901 [2] H Liao and J H Hafner “Gold ... fundamentals and applications of nanosciences and nanotechnologies The methods described in this book are very powerful and have practical applications in the subjec...

Ngày tải lên: 28/04/2014, 13:15

... fundamentals and applications of nanosciences and nanotechnologies The methods described in this book are very powerful and have practical applications in the subjects of nanorods The potential applications ... sensing applications The theoretical and experimental aspects of surface-enhanced Raman scatting and plasmonics based sensing are www.intechopen.com Preparation an...

Ngày tải lên: 28/04/2014, 13:15

... ultrafine ZnO nanorods with a mean diameter of nm and (b) room temperature PL spectra of ZnO nanorods with a different mean diameter (D) of 8, 9, 12 and 35 nm [99] Properties and applications of ZnO nanorods ... fabrications of vertical nanodevice arrays Aligned growth of ZnO nanorods ZnO nanorods: synthesis, characterization and applications (figures 2(c) an...

Ngày tải lên: 28/04/2014, 13:16

... flower -like WO3 particles By considering Figs 5a and b and 1a, the formation of WO3 may be roughly divided into three stages First, tungsten chloride hydrolyzed, and small tungsten oxide particles ... It was a rapid process, and the formed tungsten oxide particles 38 Y Zhao et al / Analytica Chimica Acta 675 (2010) 36–41 Fig (a) and (b) SEM images of flower -like WO...

Ngày tải lên: 05/05/2014, 15:28

... the rate of Cu release (see Discussion) In vitro toxicity of CuCNPs in HeLa cells The in vitro toxicity of CuCNPs in HeLa cells (a cervical adenocarcinoma) was investigated via an assay based ... platinum: synthesis, characterization, and in vitro toxicity of Cu(II)-releasing polymer nanoparticles for potential use as a drug delivery...

Ngày tải lên: 21/06/2014, 02:20