Báo cáo hóa học: " Excellent Field Emission Properties of Short Conical Carbon Nanotubes Prepared by Microwave Plasma Enhanced CVD Process" doc

... active emission sites in the randomly oriented geometry of such periodic structures. Keywords Carbon nanotubes Á CVD Á Microwave plasma CVD Á Field emission Á Conical CNTs Introduction Carbon nanotubes ... 3:25–30 27 123 NANO EXPRESS Excellent Field Emission Properties of Short Conical Carbon Nanotubes Prepared by Microwave Plasma Enhanced...

Ngày tải lên: 22/06/2014, 06:20

... NANO EXPRESS Excellent Field Emission Properties of Short Conical Carbon Nanotubes Prepared by Microwave Plasma Enhanced CVD Process Sanjay Kumar Srivastava Æ Vasant ... active emission sites in the randomly oriented geometry of such periodic structures. Keywords Carbon nanotubes Á CVD Á Microwave plasma CVD Á Field emission Á Conical CNTs I...

Ngày tải lên: 22/06/2014, 19:20

... emission peak wavelength. This is because the incre ase of QD height and the decrease of internal elec- tric field balance out the influence on the emission wavelength. As for sample D, the emission ... to the influence of QCSE. In this work, the morphologies and emission properties of GaN QDs grown on a partially relaxed AlN layer are investigated. The emission efficien...

Ngày tải lên: 20/06/2014, 23:20

... emitter prepared by spin coating of the purified MWNT–DCE solution over graphitized carbon paper shows excellent emission properties with a fairly stable emission current over a period of 4 h. ... emission properties of CNT film prepared by spin coating of the purified MWNT–DCE solution over graphitized carbon paper are superior com- pared to the other samples, du...

Ngày tải lên: 22/06/2014, 18:20

... magnetic properties. Magnetization curves as a function of applied magnetic field (M-H)at RT of samples are revealed in Figure 6, where the con- tributions of the paramagnetism (PM) signals of the samples ... con- tamination of ferromagnetic cluster formation and the observed FM is the instinct property of Zn 1-x Zr x ONPs, the zero -field- cooled (ZF C) and field- cooled (FC)...

Ngày tải lên: 20/06/2014, 22:20

... their use. J Oral Maxillofac Surg 1998, 56:1303-1313. 12. Park EJ, Lee SW, Bang IC, Park HW: Optimal synthesis and characterization of Ag nanofluids by electrical explosion of wires in liquids. ... replaced by Ag ions while dipping the HAp coatings into AgNO 3 for a per- iod of time [15,16]. The limitation of the ion exchange method is that Ag will reside mostly on the outer sur-...

Ngày tải lên: 20/06/2014, 23:20

... that of Co/InP nanocomposites. Magnetic properties of Co/InP nanocomposites Figure 4 shows field- dependent magnetization (M-H) curves of such Co/InP nanocomposites, where the applied magnetic field ... ferromagnetism by increasing the deposition time of Co. Magnetic anisotropy of this Co/InP nanocomposite with magnetization easy axis alo ng the axis of InP square channel w...

Ngày tải lên: 21/06/2014, 04:20

... phase of CrO 2 , was made by simu- lating bulk rutile-CrO 2 ,ontopoftindioxide,assuming for CrO 2 the lattice parameter a of SnO 2 ,i.e.,asituation in which the chromium dioxide is tensile. By varying ... does not depend on the number of mono - layers. This has been verified by performing calculations with one monolayer of CrO 2 grown bet ween 3, 7, and 11 monolayers of SnO 2...

Ngày tải lên: 21/06/2014, 05:20

... Single-electron transport in ropes of carbon nanotubes. Science 1997, 275:1922. 6. Ruoff RS, Lorents DC: Mechanical and thermal -properties of carbon nanotubes. Carbon 1995, 33:925. 7. Bengu E, ... L: Mechanical properties of carbon nanotubes. Appl Phys A 1999, 69:255. 4. Odom TW, Huang JL, Kim P, Lieber CM: Atomic structure and electronic properties of single-walled...

Ngày tải lên: 21/06/2014, 05:20

... Bu  du  z −→ − 1  . 2.13 This evidently completes the proof of Theorem 2.1. In view of 1.19, by similarly applying the method of proof of Theorem 2.1,wegetthe following result. Corollary 2.2. ... μ  1 0 u λ/1−μ−1 1  u du   z −→ − 1  . 2.36 The proof of Theorem 2.4 is evidently completed. With the aid of 1.19, by applying the similar method of the proof of...

Ngày tải lên: 21/06/2014, 06:20