Ferroelectric gating of graphene 6
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 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 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 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...
Dynamics of epitaxial graphene growth and adsorptions of cobalt 6
... site of bright and dim cluster relative to the structure of 6 3 The bright clusters reside on top of the corner of 6x6 maxima while the dim clusters reside on top of the “hole” (3 clusters) of 6 3 ... top of the flat islands The graphene surfaces in (a)-(d) were exposed to Co flux of 1 .6 x 10-2 ML/s at growth temperatures of 450oC, 61 0oC, 720oC and 450oC respe...
A study on some major factors affecting English learning of grade 6 ethnic minority students of a mountainous secondary school to help them learn better
... classes and interviewing namely A study on some major factors affecting English learning of grade ethnic minority students of a mountainous secondary school to help them learn better The study has ... questions will be answered What is the present English learning situation of grade ethnic minority students at Phong Lap secondary...
Revision of E 6(Unit 9,10,11)
... • Adjectives of feeling: cold, hot, hungry, full • Food: noodles, rice, meat, beef, chicken, bread • Drink: milk, coffee, orange juice, lemonade, soda • Vegetables: cabbage, lettuce,beans, ... litre IV.Put the questions for underlined parts in the following sentences 1.They want two bottles of water 2.His sister needs some oranges 3.They would like three apples 4.Miss Nga feels very ... p...
Test of unit 6+key
... failed the test, _ he studied hard A In spite of B as C although D despite 48 Glass is usually sand A made from B made of C made in D made by 49 Up to now, I a lot of information ... forty-ninth state of the United States in 1959, was bought from Russia in 1867 The price paid to the Russian government for this huge piece of land was $ 7,200,000 Secretary of State Seward arranged...
GRAMMAR OF UNIT 6
... restricted area b, dream of, object to, insist on, complain about, think of, look forward to + (not) + v-ing… Ex: “I’ll offer you a ticket for the play”, he insisted => He insisted on offering me a ticket
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