pulsed laser deposition of zinc oxide zno

... View Table of Contents: http://aip.scitation.org/toc/adv/1/3 Published by the American Institute of Physics Trang 2AIP ADVANCES 1, 032147 (2011)Electro-chemical deposition of zinc oxide nanostructures ... the synthesis of ZnO at the nanoscale and the understanding of their physicochemical properties and electronic structure are crucial for the development of ZnO-based nanodevices ZnO is characterized ... purity of the sample Only a few very recent works show the possibility of obtaining ZnO nanostructures by means of a two electrode electrochemical cell None of them reports about the possibility of

Ngày tải lên: 24/11/2022, 17:53

... STUDY OF DILUTE MAGNETIC SEMICONDUCTORS BY PULSED LASER DEPOSITION VAN LI HUI (B Sc National University of Singapore) A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF SCIENCE DEPARTMENT OF MATERIALS ... two most important types of oxide semiconductors: zinc oxide and titanium dioxide The review of the oxide based DMS (ODMS) will be discussed further in session 1.2 1.2 Oxide Dilute Magnetic Semiconductor ... washing the substrates, pulse laser deposition was carried out and the technique is described in following session 2.1.2 Pulsed laser deposition (PLD) Pulsed laser deposition (PLD) finds more

Ngày tải lên: 06/10/2015, 20:56

... protective effect of ZnO NPs against MTX toxicity which could be attributed to the antioxidant property of Zinc It protects cells against oxidative damage by stabilization of membranes Zinc competes ... component of the enzyme superoxide dismutase (SOD) present in the cytoplasm of cells Superoxide dismutase has an active centre with a copper ion and a zinc ion This enzyme promotes the conversion of ... period The level of MDA in ZnO NPs pre-treatment group was significantly (P<0.05) lowered which was comparable with that of silymarin treatment group and lesser than that of ZnO NPs concurrent

Ngày tải lên: 12/03/2020, 22:03

... obtained because of the high ratz of deposition Morcover, the another key feature of this technique is deposition of multilayers by deposition of multiple targets with sing, a laser beam To achieve ... leakage current of the film Thickness of LO bur layer (eat THe of LNG buler layer den Figure 1.10: (a) The dependence of 2P, values of PZT films as a function of the thicknesses of LNO buffer ... pulscs of laser can build up material on the substrate surface A thm film on substrate is formed The thin-tilm formation process is referred to as pulsed laser deposition, so, known as Pulsed Laser

Ngày tải lên: 11/06/2025, 21:09

... 22Chapter 3 NiSi thin film fabrication by Pulsed Laser Deposition (PLD) 3.1 Pulsed Laser Deposition Introduction of pulsed laser deposition Pulsed laser deposition is a technique for fabricating ... FILM FABRICATION BY PULSED LASER DEPOSITION Zang Hui A THESIS SUBMITTED FOR THE DEGREE OF MASTER OF SCIENCE NATIONAL UNIVERSITY OF SINGAPORE 2006 Trang 33.1 Pulsed Laser Deposition 17 3.2 ... schematic diagram of a Pulsed Laser Deposition system The PLD method of thin film growth involves evaporation of a solid target in a high vacuum chamber by means of short and high-energy laser pulses

Ngày tải lên: 26/11/2015, 23:06

... after pulsed laser ablation in liquid Phys Chem Chem Phys 15, 3068–3074 (2013). 25 Messina, G C et al Pulsed laser ablation of a continuously-fed wire in liquid flow for high-yield production of ... reproducing dynamics of cavitation bubbles in liquid-phase laser ablation Jp J Appl Phys 49, 116202 (2010). 48 Urabe, K et al Dynamics of pulsed laser ablation in high-density carbon dioxide including ... stabilization of surfactant-free, plasmonic gold nanoparticles: Effect of Hofmeister’s anions Langmuir 30 (2014). 35 Ibrahimkutty, S et al Ultrafast structural dynamics of the photocleavage of protein

Ngày tải lên: 08/11/2022, 14:55

... Table 1 Elemental composition of the calcine ZnOnanofibres determined by EDX The result of the simulations of the RBS spectra using the SIMNRA software gave the amounts of specific elements and the ... in the optical properties of electrospun ZnO fibre reported from various studies In view of this, reliable determination of the optical properties of the electrospun ZnO fibre is still paramount ... the sample as a result of the calcination This is further attestation of likely change of phase from the amorphous to a crystalline phase Figure 4 FTIR spectra of ZnO nanofibres for as-spun and

Ngày tải lên: 24/11/2022, 17:51

... upper-left inset, of an SPLA sample produced with a Ge layer thickness of 0.9 nm, a peak SPLA laser fluence of 115 mJ/cm2, and a scan speed of 1.0 µ m/s (corresponding to accumulation of 5000 laser shots ... Proposed model for the induction of formation of QDs by SPLA: (a) illustration of the induction of formation of QDs by the scanning laser beam and (b) time sequence of the underlying physical processes. ... spectra of SPLA samples produced using various scan speeds (various numbers of accumulated laser shots) with a Ge layer thickness of 0.9 nm and a peak SPLA laser fluence of 115 mJ /cm 2 (b) Ratio of

Ngày tải lên: 04/12/2022, 10:33

... films of NNO were grown via pulsed laser depo-sition (KrF excimer laser) at a temperature of 700◦ C in a pure oxygen environment (pressure of 0.2 mbar) The base pressure of the chamber prior deposition ... sources of off-stoichiometry19 and, eventually, impose a good level of reproducibility of the oxide thin films, is the understanding of the influence of the ablation process on the chemistry of the ... Nature 533, 452–454 (2016). 4D P Norton, “Pulsed laser deposition of complex materials: Progress toward applications,” in Pulsed Laser Deposition of Thin Films (John Wiley & Sons, Inc., 2006),

Ngày tải lên: 04/12/2022, 16:10

... (b) ZnO/Si (111) và (c) ZnO/SiO2 24 Bảng 3.4 Bảng tóm tắt các thông số của 3 mâu ZnO/Si (100), ZnO/Si (111) và ZnO/SiO2từ ảnh SEM 24 Hình 3.3 Phổ XRD của ZnO nanorods mọc trên 3 đế, với mâu ZnO/Si ... quan vật liệu ZnO 1 1.1 Tổng quan về vật liệu khối ZnO 1 1.1.1 Cấu trúc tinh thể 1 1.1.2 Tính chất điện của ZnO 2 1.1.3 Tính chất quang của ZnO 4 1.2 Tổng quan về thanh nano ZnO (ZnO nanorod) ... Thanh nano ZnO 4 1.2.2 Lớp hạt ZnO (ZnO Seed layer) 6 1.2.3 Ứng dụng của thanh nano ZnO 6 Chương 2 Chế tạo và cac phương phap khảo sat của thanh nano ZnO 7 2.1 Chế tạo thanh nano ZnO 7 2.1.1

Ngày tải lên: 11/05/2023, 09:43

... (b) ZnO/Si (111) và (c) ZnO/SiO2. 24 Bảng 3.4 Bảng tóm tắt các thông số của 3 mâu ZnO/Si (100), ZnO/Si (111) và ZnO/SiO2 từ ảnh SEM. 24 Hình 3.3 Phổ XRD của ZnO nanorods mọc trên 3 đế, với mâu ZnO/Si ... Thanh nano ZnO 4 1.2.2 Lớp hạt ZnO (ZnO Seed layer) 6 1.2.3 Ứng dụng của thanh nano ZnO 6 Chương 2 Chế tạo và cac phương phap khảo sat của thanh nano ZnO 7 2.1 Chế tạo thanh nano ZnO 7 2.1.1 ... Bảng tóm tắt các thông số của 3 mâu ZnO/Si (100), ZnO/Si (111) và ZnO/SiO2 từ ảnh SEM. 24Bảng 3.4 Tóm tắt các thông số tính toán ZnO/Si (100), ZnO/Si (111) và ZnO/SiO2 thuđươc phép đo XRD 27 Bảng

Ngày tải lên: 11/05/2023, 09:53

... (b) ZnO/Si (111) và (c) ZnO/SiO2 24 Bảng 3.4 Bảng tóm tắt các thông số của 3 mâu ZnO/Si (100), ZnO/Si (111) và ZnO/SiO2từ ảnh SEM 24 Hình 3.3 Phổ XRD của ZnO nanorods mọc trên 3 đế, với mâu ZnO/Si ... quan vật liệu ZnO 1 1.1 Tổng quan về vật liệu khối ZnO 1 1.1.1 Cấu trúc tinh thể 1 1.1.2 Tính chất điện của ZnO 2 1.1.3 Tính chất quang của ZnO 4 1.2 Tổng quan về thanh nano ZnO (ZnO nanorod) ... Thanh nano ZnO 4 1.2.2 Lớp hạt ZnO (ZnO Seed layer) 6 1.2.3 Ứng dụng của thanh nano ZnO 6 Chương 2 Chế tạo và cac phương phap khảo sat của thanh nano ZnO 7 2.1 Chế tạo thanh nano ZnO 7 2.1.1

Ngày tải lên: 07/09/2023, 23:14

... crystal structure of the pristine ZnO and Mn-doped ZnO for various doping levels have been analyzed by XRD All of the diffraction peaks can be indexed to the wurtzite structure of ZnO (space group ... well [31] The XPS data of Zn2p and Mn2p further provide evidences for the incorporation of Mn2+ ions into ZnO To obtain a better understanding of the formation of Mn-doped ZnO HMSs, a probable ... Abstract In this study, a series of manganese [Mn]-doped zinc oxide [ZnO] hierarchical microspheres [HMSs] are prepared by hydrothermal method only using zinc acetate and manganese acetate

Ngày tải lên: 20/06/2014, 20:20

... images of ZnO film deposited on polymer (a, b) SEM images of ZnO nanocrystalline film deposited on polyimide (Kapton®) and (c) EDX of the ZnO film. Trang 9tension is released by the formation of ... pulsedlaser deposition [24], thermal evaporation [25], hydro-thermal [26], and sol-gel processes [27] - often require substantial vacuum, expensive consumables (e.g., diethyl zinc, dimethyl zinc, ... temperature profiles of ZnO nanocrystalline films deposited with saw-toothed temperature profiles that have resident times of (a3) 135 s, (b3) 290 s, and (c3) 445 s above the melting point of zinc (420°C)

Ngày tải lên: 20/06/2014, 22:20

... Institutes of Health guidelines, and by the New York University School of Medicine Division of Laboratory Animal Resources. Zinc oxide generation, characterization, and exposure Mice were exposed to ZnO ... Central Page 1 of 12 (page number not for citation purposes) Respiratory Research Open Access Research Quantitative trait analysis of the development of pulmonary tolerance to inhaled zinc oxide in ... chamber. ZnO fumes were generated in a furnace as previ- ously described [7,16]. The ZnO particles had a mass median aerodynamic diameter of 0.3 µm and geometric standard deviation of 1.5. Samples of

Ngày tải lên: 12/08/2014, 18:21

... the CoFe2O4 / ZnO /SiO2, andthe enlarged (333) diffraction of the CoFe2O4 filmswith different thicknesses 143 Figure 7 5 In plane and out of plane hysteresis loops of the CoFe2O4 (40nm) / ZnO ... TABLE OF CONTENTS VII LIST OF TABLES XI LIST OF FIGURES XII Chapter 1 Introduction 1 1.1 Oxides in spintronics 2 1.1.1 Highly spin-polarized oxides (half metallic oxides) 2 1.1.2 Oxides ... Exploration of ferromagnetic oxides/semiconductor (ZnO) multifunctional heterostructures 137 7.1 Introduction 137 7.2 Experimental 139 7.3 Fe3O4 / ZnO & CoFe2O4 / ZnO 140 7.4 ZnO / SrRuO3

Ngày tải lên: 09/09/2015, 10:15

... mechanism of magnetism in ZnO:Co thin films 1.4 Organization of the Thesis After having provided a brief background of this research, an overview of the work done so far on Co-doped ZnO is provided ... which is called the spin-valve.9 The state-of-the-art spin-valve consists of a dozen of thin layers; the heart of which is a trilayer structure consisting of two ferromagnetic layers separated by ... ferromagnetism in cobalt doped zinc oxide (ZnO:Co).64 On the other hand, Spaldin argued theoretically that only hole doping promotes ferromagnetism in both ZnO:Co and ZnO:Mn.65 Till recently, Sluiter

Ngày tải lên: 12/09/2015, 08:18

... this thesis 2.1.1 Pulsed- laser deposition One of the most significant approaches to oxide film growth is pulsed- laser deposition Pulsed- laser deposition (PLD) is now a widely used deposition approach ... [3,4], pulsed- laser deposition (PLD) [5], and sputtering [6], as well as chemical vapor deposition( CVD) With physical deposition of oxides, the phase elements are delivered as a flux of individual ... and physical properties of CoFe2O4 x Chapter Introduction 1.1 The application of oxide film Within the class of inorganic materials, oxides may have the most diverse range of functions The interaction...

Ngày tải lên: 07/10/2015, 10:10

... measure the magnetic properties of the samples Pulsed Laser Deposition Technique Pulsed laser deposition (PLD) has clearly emerged as one of the premier thin film deposition techniques for multi-elemental ... reproduction of the stoichiometry of the charged material and in situ deposition of oxides without the requirement of any post -deposition process adds to the advantage of the technique On top of all ... involved in the laser- target interaction is extremely complex It depends critically on the laser beam Laser Heater plume Target Substrate Figure : Schematic diagram of a pulsed laser deposition chamber...

Ngày tải lên: 08/09/2015, 15:20

... such as pulsed laser deposition, sputtering, screen printing, sol-gel and metalorganic chemical vapor deposition (MOCVD).1-7 The deposition techniques used in this thesis are pulsed laser deposition ... None of this would be possible without their love and concern ii Table of Contents Page Acknowledgements i Table of Contents iii Summary vi List of Publications ix List of Figures x List of Tables ... schematic drawing of the pulsed laser deposition (PLD) system All substrates were first cleaned using nitric acid in an ultrasonic cleaner for to remove any natural oxide layer or oxide contaminant...

Ngày tải lên: 16/09/2015, 08:31