Ferroelectric gating of graphene 9
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 graphene research has been its ... Carbon Benchmark Books (NY), 199 9 [11] A H Castro Neto, F Guinea, N M R Peres, K S Novoselov, and A K Geim The electronic properties of graphene Rev Mod Phys., 81:1 09, 20 09 [12] K S Novoselov, D Jiang,...
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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 transferred onto a 30 0 nm SiO2 over doped ... 3. 3: (a) Growth parameters of large-scale graphene using chemical vapor deposition method; (b) Optical image of thermal furnace and copper foils for graphene growing (c) 30 -inch large-scale graphene...
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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 15 17 18 Fabrication and experimental setups 25 3 .1 Graphene fabrication 25 3 .1. 1 Mechanical exfoliated graphene...
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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 a function of wavelength from the visible ... resistances of large-scale graphene can be immediately achieved without further ferroelectric poling This can largely simplify the device fabrication steps Fig 6. 6a shows the XRD measurements of both...
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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 for the grapheneferroelectric ... controlled by ferroelectric gating (Figs 4. 12b and 4. 12c) The origin of all positive/negative Hall signals is illustrated in Fig 4. 12d Around 5-20% area of P(VDF-TrFE) thin films is non -ferroelectric, ...
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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 inhomogeneity in graphene ... high quality of our Cu-CVD graphene In Fig 7. 2a, we show a wafer-scale array of Cu-CVD GFeFETs on PZT Fig 7. 2b shows the typical resistance vs gate voltage characteristics (R vs VBG ) of GFeFETs...
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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 BLG σ (e2/h) ... a 80 40 -2 -1 100 300 K 250 K 200 K 5K 50 K 100 K 12 -2 Charge Density (10 cm ) 200 SLG 12 -2 Charge Density (10 cm ) Figure 5. 5: (a) and (b) QHE of CVD SLG and BLG graphene on Si/SiO2 substrate,...
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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 patterning HSQ layer (f) R vs VBG of ... VBG of graphene samples before PVDF coating b: R vs VBG of graphene samples after PVDF coating c: a: R vs VBG of graphene samples at +Pr and -Pr dipole orientations, respectively d: R vs VT G of...
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WORD FORM OF GRADE 9 FULL .excellent !!!!
... faster and more reliable 89. I findthis mgazine (inform) It’s full of rubbish 90 .Rading newspapers every day is an effective means of keeping up with the (late) and (globe) 91 W website is a place ... to see the volcanic (erup) of Mt Vesuvius 1 89 The mountain was full of (volcano) rock and ash when the eruption was over 190 When the fire occured, I was fast (sleep) 191 Mr Robinson is a (weather) ... isn’t (availability) for her 97 .Her novel is mnown to every one It is (wide) read 98 Can you tell me the (wide ) of the room? I intend to buy a larger wardrobe 99 .You got this badmark because...
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English for students of Physics_Unit 9
... (S) for the same and (D) for the different a The frictional force is greater when the contact force is greater b The greater the contact force, the greater the frictional force a When the mass of ... and therefore has the same mass The equal- arm balance gives us a way of comparing masses of objects of any kind, regardless of their shape, form, color, or what substance they are made of Issac ... from English in Physical Sciences, Student’s edition by J.P.B.Allen, H.G.Widdowson, Oxpford University Press, 199 7) TRANSLATION Task one: English- Vietnamese translation Suppose a piece of gold...
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vocabulary of unit 9
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Bài giảng exercises of unit 9
... 2-decided learned 3-cap paddy 4-skirt fish 5-cheap eat 6-touch watch 7-uncle turtle 8-local improve 9- dress pretty 10- material shark * Write : stayed collected woman exit teacher armchair cut buffalo ... Nam / be / school library / three hours ago / borrow / comics ……………………………………………………………………………………… 9- Mr Nam /learn /English last week but he / not / know / read it ………………………………………………………………………………………...
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Tài liệu exercise of unit 9 lan 1
... shortage of water unless it rains A If it doesn’t rain, there will be a shortage of water B There will be a shortage of water if it rains C It doesn’t rain, there would be a shortage of water ... (want) (find) _ a good English dictionary At last both of us (buy) the same ones after we (look) for many kinds of dictionary carefully V- Choose the sentence (A, B, C or D) ... hurry up D We will miss the train unless we hurry up Bill didn’t go to school because of his illness A Because of Bill was ill, he didn’t go to school B.Because Bill is ill, he doesn’t go to school...
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Bài giảng exercise of unit 9 lan 2
... lot of funny things to make people laugh 10 There is a game on television tonight B Answer the questions Can dolphin talk with words like people? What dolphins talk about? What is a school of ... see them d A dolphin can talk with sound The word “school” in line of the passage means a A place to teach children b A group of dolphins a big house The dolphins like to be a At an aquarium ... her, I will quit that job immediately and look for another one A B C D He lent his friend 20 , in spite of he didn’t have much money himself Will Linh mind if I took his motorbike without asking...
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Tài liệu Golf and the game of leadership 9 ppt
... 02-23-04 16:44:46 PS 72 Golf and the Game of Leadership refer to this as a bringing together of the elements of the game, whether golf or leadership, for a shot at the target All the pieces— values, ... from the ball on the tee and from the club face to the target The other track is a parallel alignment of the shoulders, hips, and feet There is a tendency to want to point the shoulders, hips, and ... take their lead from and try to emulate the behavior of their bosses After all, they right away say to themselves, ‘I want the bosses’ job.’ So, they become victims of the serendipity of the process,...
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