Báo cáo hóa học: " Polycation stabilization of graphene suspensions" docx

... f graphene. Figure 4 Electron microscopy of graphene. (a) Bright-field TEM images of monolayer graphene, (b) HRTEM image from the same location, and (c) electron diffraction pattern of the graphene ... monolayer of reduced GO Figure 2 Tapping mode AFM image of GO on SiO 2 /Si with step height profile. Figure 3 AFM image of polyquaternium-stabilized graphene membrane with h...

Ngày tải lên: 21/06/2014, 01:20

... developed a large area of CVD synthesis and transfer of graphene films. With patterning of these graphene layers using standard photoresist masks, we are able to produce arrays of gated graphene device ... that Figure 1 Characterisation of as transferred graphene on SiO 2 substrates. On left XPS spectrum shows good quality graphene, on right AFM image shows presence of la...

Ngày tải lên: 21/06/2014, 03:20

... thickness of two to three graphene planes. This small discrepancy might occur because of the uncertainty of one to two layers for thickness determined from Raman spectroscopy and from the difference of ... (quarter) circle shows the ringlike pattern of graphene. The modulated intensity of FLGs signal corresponds to the distribution of rotation angles for the first graphene...

Ngày tải lên: 21/06/2014, 05:20

... 2a) is very much of the same size as of the 36 kDa of the N4 phage. In fact the SDS-PAGE of the structural proteins of N5 vibriophage closely resembles the SDS-PAGE pattern of another vibrio ... comparison of these results with the SDS-PAGE of the N4 phage [6] reveals that the molecular masses of the N5 polypeptides are slightly higher than that of N4 phage. Nevertheless,...

Ngày tải lên: 20/06/2014, 04:20

... Lam et al.: The use of tibial Less Invasive Stabilization System (LISS) plate [AO-ASIF] for the treatment of paediatric supracondylar fracture of femur: a case report. Journal of Orthopaedic Surgery ... fractures of the femur are not common. The treatment options depend on the age of child, the site of the fracture, the pattern of injury and the surgeon’s preference. We repo...

Ngày tải lên: 20/06/2014, 04:20

... of the MoS 2 nanotube during the first stage of the exfoliation process; (d) TEM micrograph of the MoS 2 single layers as a final stage of nanotube exfoliation; (e) AFM image (contact mode) of ... friction coefficient of 0.05 [17]. Ultra-low friction of 0.003 was reported between MoS 2 flakes and MoS 2 surfaces [18]. The pro- blem of edge oxidation and preservation of the fl...

Ngày tải lên: 20/06/2014, 22:20

... functionalized graphene sheet nanocomposites suggest that phonon coupling of the vibrational modes of the graphene and of the polymeric matrix plays a dominant role on the thermal conductivities of the ... MWNTs are the most effective carbon nanofillers to improve the K of liquid resins. Indeed, the K of the nanofluids gradually increased as a function of MWNT content,...

Ngày tải lên: 20/06/2014, 23:20

... symmetric structure of graphene makes it a candidate material for nano devices. Many studies [17-25] have focused on the chemical function alization of graphene, especially on the effect of absorbed ... discussed. Methodology Figure 1 shows the MD model of a freestanding honey- comb graphene sheet and a diamond indenter tip. The graphene substrate consists of 10,032 carbon at...

Ngày tải lên: 21/06/2014, 01:20

... thermal decomposition of SiC [6] and in graphene obtained by chemical reduction of graphene oxide [7]. Recently, the intentional production of defects in selected areas of a graphene sheet has also ... evaluate the density of defects in a graphene sheet. The characteristic D line at 1360 cm -1 in the Raman spectra is a fingerprint of defects/disorder in the crystalline lat...

Ngày tải lên: 21/06/2014, 05:20

... thermal decomposition of SiC [6] and in graphene obtained by chemical reduction of graphene oxide [7]. Recently, the intentional production of defects in selected areas of a graphene sheet has also ... (a.u.) 1.0 n m 2 ) 10 -2 ' C A eff A eff Graphene A tip GrapheneGraphene Graphene A eff A eff A eff A eff (b) 00 0.5 e ff (x10 4 n SiO 2 ( c ) -1.0 -0.5 0.0 0.5 1.0 0 ....

Ngày tải lên: 21/06/2014, 06:20