scholarly journals Laser deposition of carbon clusters on surfaces: A new approach to the study of Fullerenes

1990 ◽  
Vol 93 (11) ◽  
pp. 7800-7802 ◽  
Author(s):  
Gerard Meijer ◽  
Donald S. Bethune
Keyword(s):  
Laser Deposition ◽  
Carbon Clusters ◽  
New Approach

P-Type II-VI Compound Semiconductor Thin Films Grown by Pulsed Laser Deposition

1995 ◽  
Vol 388 ◽  
Author(s):  
W. P. Shen ◽  
H. S. Kwok
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Type Ii ◽  
New Approach ◽  
Li Doping ◽  
Semiconductor Thin Films ◽  
In Doping ◽  
P Type

AbstractIn this paper the results on p-type ZnS, ZnSe, CdS and CdSe thin films grown by pulsed laser deposition will be discussed. these films were deposited on GaAs substrates. Li-doping has been shown to be effective in producing p-type II-VI thin films, while in-doping is excellent for n-type CdS and CdSe thin films. No post-annealing process was used. these preliminary results suggest a possible new approach through pulsed laser deposition to solve the doping problem of II-VI compound semiconductors.

Matrix shaped pulsed laser deposition: New approach to large area and homogeneous deposition

2014 ◽  
Vol 302 ◽  
pp. 149-152 ◽  
Author(s):  
C.K. Akkan ◽  
A. May ◽  
M. Hammadeh ◽  
H. Abdul-Khaliq ◽  
O.C. Aktas
Keyword(s):  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Large Area ◽  
New Approach

Features of the Formation of Structure and Geometry during Direct Laser Deposition of 321L Stainless Steel on Complex Groove Using the LENS Method

2021 ◽  
Vol 887 ◽  
pp. 309-318
Author(s):  
Vitaly Bobyr ◽  
P. Kuznetsov ◽  
A. Zhukov ◽  
I. Shakirov
Keyword(s):  
Stainless Steel ◽  
High Performance ◽  
Electrical Steel ◽  
Solenoid Valve ◽  
Laser Deposition ◽  
New Approach ◽  
The Core ◽  
Operational Characteristics ◽  
Direct Laser ◽  
Powder Particles

Additive manufacturing is a new approach to solving the problems of creating high-performance instrument components. This article is devoted to the solution of the narrowly directed problem of surfacing metal powder 321L using the LENS method on the solenoid valve core. The core is made of electrical steel, in which a complex groove is machined. The difficulty of this work was to accurately perform the geometry of the melt layer that is not standard for this method. As a result, the product was obtained according to a completely new approach to its design, which subsequently gave increased operational characteristics of the final product. The article presents the problems that can be encountered when performing complex crevice surfacing on a complex groove. The structure of the deposited layer is considered, defects characteristic of this method in the form of interlayer pores, unalloyed powder particles are identified and described. The LENS process control modes are presented in order to reduce defects and improve the development of surfacing geometry.

Research and Development of Biaxially Textured IBAD-GZO Templates for Coated Superconductors

MRS Bulletin ◽  
2004 ◽  
Vol 29 (8) ◽  
pp. 564-571 ◽  
Author(s):  
Yasuhiro Iijima ◽  
Kazuomi Kakimoto ◽  
Yutaka Yamada ◽  
Teruo Izumi ◽  
Takashi Saitoh ◽  
...  
Keyword(s):  
Research And Development ◽  
Low Cost ◽  
Ion Beam ◽  
Laser Deposition ◽  
Superconducting Tapes ◽  
Stabilized Zirconia ◽  
New Approach ◽  
Vacuum Technology ◽  
Ion Beam Assisted Deposition ◽  
Metalorganic Deposition

AbstractIon-beam-assisted deposition (IBAD) has been used to prepare biaxially textured templates necessary to realizing high superconducting performance in coated conductors.The IBAD method is characterized by the direct deposition of sharply aligned templates on nontextured metal substrates using fluorite-like oxide films (yttrium-stabilized zirconia, Gd2Zr2O7, etc.).Recent progress in vacuum technology for IBAD has made it possible to reproducibly fabricate long lengths (100 m) of IBAD-GZO templates.Continuous deposition of YBCO films on these templates has been achieved by pulsed laser deposition (PLD).Furthermore, a new approach to improving the texture of IBAD templates was found by using CeO2 films grown by PLD.Trifluoroacetate-based metalorganic deposition has also been used instead of PLD to produce superconducting layers on IBAD buffered tapes, aiming at a low-cost process.This article reviews progress in the research and development of biaxially textured templates produced using IBAD and their subsequent use in fabricating superconducting tapes and wires by means of several processes.

scholarly journals Measurement of Thermoelectric Parameters of Thin-Film Semiconductor Materials Using the Harman Method

2019 ◽  
Vol 20 (3) ◽  
pp. 306-310 ◽  
Author(s):  
Y. Tur ◽  
Y. Pavlovskyi ◽  
I. Virt
Keyword(s):  
Pulsed Laser ◽  
Electric Circuit ◽  
Laser Deposition ◽  
Semiconductor Materials ◽  
Semiconductor Films ◽  
New Approach ◽  
Current Pulses ◽  
Thin Semiconductor ◽  
Measurement Methodology ◽  
Thermoelectric Parameters

For the analysis of the measurement of thermoelectric parameters of semiconductors, the Harman pulsed method was used. The authors propose a new approach to determine the thermoelectric quality factor of thin semiconductor films in the temperature interval (300 ÷ 500) K by directly measuring a series of electric circuit parameters. The theory of the method is described in detail and its application in the measurement methodology. The dependences of electrical quantities on the time, namely voltage – V(t), are investigated at different values of current pulses for thin films PbTe<Tl> grown by the pulsed laser deposition. 

Characterization of diamond-like carbon clusters deposited by pulsed ArF laser deposition

Carbon ◽  
2000 ◽  
Vol 38 (8) ◽  
pp. 1145-1151 ◽  
Author(s):  
A.H Jayatissa ◽  
F Sato ◽  
N Saito ◽  
Y Hirano ◽  
K Takizawa
Keyword(s):  
Laser Deposition ◽  
Carbon Clusters ◽  
Diamond Like Carbon ◽  
Arf Laser

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

A New Approach to the Demonstration of Oxidase-Localization Using Tannic Acid Or Catechin

1973 ◽  
Vol 31 ◽  
pp. 698-699
Author(s):  
V. Mizuhira ◽  
Y. Futaesaku
Keyword(s):  
Cross Section ◽  
Tannic Acid ◽  
Elastic Fiber ◽  
The Other ◽  
New Approach ◽  
Tissue Block ◽  
Active Reaction ◽  
The Cross

Previously we reported that tannic acid is a very effective fixative for proteins including polypeptides. Especially, in the cross section of microtubules, thirteen submits in A-tubule and eleven in B-tubule could be observed very clearly. An elastic fiber could be demonstrated very clearly, as an electron opaque, homogeneous fiber. However, tannic acid did not penetrate into the deep portion of the tissue-block. So we tried Catechin. This shows almost the same chemical natures as that of proteins, as tannic acid. Moreover, we thought that catechin should have two active-reaction sites, one is phenol,and the other is catechole. Catechole site should react with osmium, to make Os- black. Phenol-site should react with peroxidase existing perhydroxide.

Processing Immunoperoxidase Labeled Cell Monolayers and Cryostat Sesctions For Electron Microscopy

1985 ◽  
Vol 43 ◽  
pp. 714-715
Author(s):  
K. Chien ◽  
R. Van de Velde ◽  
I.P. Shintaku ◽  
A.F. Sassoon
Keyword(s):  
Cell Monolayer ◽  
Cell Types ◽  
Surface Antigens ◽  
Immunoperoxidase Method ◽  
Reaction Step ◽  
Hot Plate ◽  
Air Drying ◽  
New Approach ◽  
Cell Monolayers ◽  
Glass Slides

Immunoelectron microscopy of neoplastic lymphoma cells is valuable for precise localization of surface antigens and identification of cell types. We have developed a new approach in which the immunohistochemical staining can be evaluated prior to embedding for EM and desired area subsequently selected for ultrathin sectioning.A freshly prepared lymphoma cell suspension is spun onto polylysine hydrobromide- coated glass slides by cytocentrifugation and immediately fixed without air drying in polylysine paraformaldehyde (PLP) fixative. After rinsing in PBS, slides are stained by a 3-step immunoperoxidase method. Cell monolayer is then fixed in buffered 3% glutaraldehyde prior to DAB reaction. After the DAB reaction step, wet monolayers can be examined under LM for presence of brown reaction product and selected monolayers then processed by routine methods for EM and embedded with the Chien Re-embedding Mold. After the polymerization, the epoxy blocks are easily separated from the glass slides by heatingon a 100°C hot plate for 20 seconds.

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