Ferroelectric gating of graphene 1
Ferroelectric gating of graphene 1
... 11 5 11 6 11 6 11 7 11 8 Bibliography 11 9 Publications 14 1 Patents 14 3 vii Acknowledgements Over my four-year Ph.D time, I would like to express my deep thanks to my advisor, ¨ Prof Barbaros ... 10 9 10 9 11 1 11 1 11 3 9.2.3 Can we achieve less than 10 0 Ω/2 sheet resistance in CVD graphene? 9.3 Future outlook 9.3 .1 Gate-tunable graphene -ferroelectric ... 12 12 1...
Ferroelectric gating of graphene 9
... 199 3 [5] S Iijima Helical microtubules of graphitic carbon Nature, 354:56, 199 1 [6] P R Wallace The band structure of graphite Phys Rev, 71:622, 194 7 [7] A K Geim and K S Novoselov The rise of ... potential research topics involving graphene and ferroelectric material 9. 3.1 Gate-tunable graphene -ferroelectric photonics Over the past seven years, the main focus of graphen...
Ferroelectric gating of graphene chap 3
... that we are using is ferroelectric copolymer P(VDF-TrFE) 31 a b Figure 3. 5: (a) Schematics of a graphene -ferroelectric p-n-p junctions; (b) Optical image of a graphene -ferroelectric p-n-p junction ... lattice [49, 50, 80] 30 3. 2 Fabrication of graphene field effect transistor GFET 3. 2.1 GFET devices using mechanically exfoliated graphene After graphene is transferr...
Ferroelectric gating of graphene 6
... Intensity (a.u.) a G P(VDF-TrFE) 1530 1 560 1590 162 0 165 0 Raman Shift (cm -1 ) 168 0 c 1.0 0.0 -1.0 -2.0 -1.0 -0.5 0.0 0.5 1.0 Voltage (V) Figure 6. 6: (a) XRD results of both P(VDF-TrFE) foil and house-produced ... excellent mechanical support for graphene (Fig 6. 3a) Fig 6. 3b shows the graphene- P(VDF-TrFE) hybrid structure on top of PET substrates The transmission spectra as...
Ferroelectric gating of graphene 4
... ferroelectric thin film of poly(vinylidene fluoride-trifluoroethylene) 44 Figure 4. 3: (a) Sample geometry of a finished graphene -ferroelectric memory device (b) Optical image of a graphene samples showing ... linear slope of the R vs VBG 45 Rmax R (k ) R/R>350% RPr Rmin -1 =700 cm V s -80 -40 V TG -1 40 80 (V) Figure 4. 4: Electric hysteresis loop; R as a function of VTG f...
Ferroelectric gating of graphene 7
... Cu-CVD graphene on PZT As shown in Fig 7. 1e, G peaks of Cu-CVD graphene on PZT show a noticeable red shift of ∼ 10 cm−1 and broadening of full width at half maximum (FWHM), compared to CVD graphene ... cm−2 (Fig 7. 2b and 7. 2c) This indicates the electron-hole puddle intensity of graphene on PZT is an order -of- magnitude higher than graphene on SiO2 The strong charge i...
Ferroelectric gating of graphene 5
... over 50 - 350 K and 1012 cm−2 ranges (Fig 5. 5e and 5. 5f) [34] a c 12 e -2 2.0 x 10 cm , S1 -2 -2 12 -2 12 400 50 40 12 12 60 -2 2.0 x 10 cm , S2 200 400 20 2 .5 x 10 cm 100 -3 -4 -2 -1 12 150 200 250 ... γT /ne, and 70 SLG 16 B=9T T = 3 .5 K c e 1.8 SLG 60 1.6 40 -0.3 0.0 40 -3 60 d -8 20 VBG (V) 40 60 -2 12 -2 -2 3.8 (10 cm ) 0.2 0.4 50 150 250 -2 350 50 150 250 T (K) f BLG 400 BLG...
Ferroelectric gating of graphene 8
... Fig 8. 7a Fig 8. 7b shows the pure PET substrate signal 1 08 (b) Transmittance Transmittance (a) Figure 8. 7: a: Optical transmittance of graphene as a function of strain and polarization angle of ... image of graphene sample after partially define HSQ layer (d) AFM image of graphene sample after P(VDF-TrFE) spin coating (e) R vs VBG of graphene samples before patterni...
Báo cáo hóa học: " Multiscale investigation of graphene layers on 6H-SiC(000-1)" pot
... surface with a graphene monolayer on top It can also be stated that the edges of the Figure STM images of the edges of the graphene islands (a) 23 × 23 nm2 STM image of a monolayer on top of the (3 ... areas correspond to monolayer graphene grown on (3 × 3) SiC-reconstructed surface MPs are seen on the monolayer and on the multilayers (the brighter area) indicating t...
Applications of graphene to cell biology 1
... in cell biology 11 1. 3 Use of graphene as a sensor 12 1. 4 Force sensing 14 1. 5 Cell counting 16 1. 5 .1 ... 11 1 4.32 Inverted device photo 11 2 4.33 Results of a number of experiments on an inverted device 11 4 4.34 Computed precision of the cell counting device 11 7 A .1 ... coating to allow cells to attach to such a substrate As graphene is al...
First principles study of graphene related materials 1
... 3acc √ x−y , ˆ ˆ (1. 2) CHAPTER INTRODUCTION TO GRAPHENE- RELATED MATERIALS b1 (b) a2 a2 Κ' a1 A a1 b2 (a) Μ B Y Γ Κ X Figure 1. 1: (a) The atomistic model of the hexagonal network of graphene; the ... INTRODUCTION TO GRAPHENE- RELATED MATERIALS = Figure 1. 2: The three equivalent Clar structures of graphene ing strength of 42 Nm -1 and Young’s modulus of 1. 0 TPa w...
Dynamics of epitaxial graphene growth and adsorptions of cobalt 1
... Adatom to graphene charge transfer (e) Reference Hole 1. 27 2 .12 - 1. 31) - 81 Hole 1. 32 2.09 1. 56 1. 1 1. 1 83 Hole 0.97 - 1. 51 1.0 0.6 33 Hole 2.4 - 1. 52 1. 0 0.2 31 Hole 1. 58 2 .10 1. 49 1. 0 - 32 ... from the SiC bulk so that the (63x63)R30o of SiC(00 01) coincidence with 13 x13 of the graphene mesh Due to mismatch between the SiC(1x1) and graphene( 1x1)...
Báo cáo y học: "PKC and PKA Phosphorylation Affect the Subcellular Localization of Claudin-1 in Melanoma Cells"
... junction barrier integrity (7) Conversely, activation of atypical PKC isoforms using bryostatin instead increased the expression of claudin-1 in the tight junction complex, and increased tight ... cell motility We have previously shown that increasing the levels of CLDN-1 increases the invasion of melanoma cells (4) To determine if the increase in claudin-1 needs...
PRACTICE TEST OF UNIT 1
... can’t possibly work in this noise It’s impossible for us to work in this noise UNIT I II A 10 11 12 13 14 15 QN TEST PRONUNCIATION Choose the word that has the underlined part pronounced differently ... violently and all of us felt that All of us felt the house shaking violently 10 Can you sign the papers please? They are ready now QN The papers are ready for you to sign 11 Do...
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