Ultrathin Insulator Films with Atomically Smooth Surfaces Using Plasma Processing

2008 ◽  
Author(s):  
Venkateswara Bommisetty ◽  
Rojan L. Karmacharya ◽  
Suravi Shrestha ◽  
David Galipeau
Keyword(s):  
Plasma Processing ◽  
Smooth Surfaces

Stereo Electron Microscopy Applied to High Resolution Freeze-Etch Replicas

1970 ◽  
Vol 28 ◽  
pp. 306-307
Author(s):  
L. Andrew Staehelin
Keyword(s):  
Electron Microscopy ◽  
Plastic Deformation ◽  
High Resolution ◽  
Smooth Surfaces ◽  
Small Particles ◽  
Membrane Surfaces ◽  
Wide Acceptance ◽  
New Information ◽  
Number Of Particles ◽  
Small Holes

Freeze-etched membranes usually appear as relatively smooth surfaces covered with numerous small particles and a few small holes (Fig. 1). In 1966 Branton (1“) suggested that these surfaces represent split inner mem¬brane faces and not true external membrane surfaces. His theory has now gained wide acceptance partly due to new information obtained from double replicas of freeze-cleaved specimens (2,3) and from freeze-etch experi¬ments with surface labeled membranes (4). While theses studies have fur¬ther substantiated the basic idea of membrane splitting and have shown clearly which membrane faces are complementary to each other, they have left the question open, why the replicated membrane faces usually exhibit con¬siderably fewer holes than particles. According to Branton's theory the number of holes should on the average equal the number of particles. The absence of these holes can be explained in either of two ways: a) it is possible that no holes are formed during the cleaving process e.g. due to plastic deformation (5); b) holes may arise during the cleaving process but remain undetected because of inadequate replication and microscope techniques.

Microstructural characterization of plasma-processed Ti-Al metal matrix composites

1989 ◽  
Vol 47 ◽  
pp. 552-553
Author(s):  
M. G. Burke ◽  
M. N. Gungor ◽  
M. A. Burke
Keyword(s):  
High Temperature ◽  
Titanium Aluminide ◽  
Plasma Processing ◽  
Microstructural Characterization ◽  
High Temperature Strength ◽  
Matrix Composites ◽  
Intermetallic Matrix ◽  
Long Time ◽  
Strength And Stiffness ◽  
Intermetallic Matrix Composites

Intermetallic matrix composites are candidates for ultrahigh temperature service when light weight and high temperature strength and stiffness are required. Recent efforts to produce intermetallic matrix composites have focused on the titanium aluminide (TiAl) system with various ceramic reinforcements. In order to optimize the composition and processing of these composites it is necessary to evaluate the range of structures that can be produced in these materials and to identify the characteristics of the optimum structures. Normally, TiAl materials are difficult to process and, thus, examination of a suitable range of structures would not be feasible. However, plasma processing offers a novel method for producing composites from difficult to process component materials. By melting one or more of the component materials in a plasma and controlling deposition onto a cooled substrate, a range of structures can be produced and the method is highly suited to examining experimental composite systems. Moreover, because plasma processing involves rapid melting and very rapid cooling can be induced in the deposited composite, it is expected that processing method can avoid some of the problems, such as interfacial degradation, that are associated with the relatively long time, high temperature exposures that are induced by conventional processing methods.

Why bats are blind to smooth surfaces

Nature ◽  
2017 ◽  
Author(s):  
Shamini Bundell
Keyword(s):  
Smooth Surfaces

Controlled Filament Non-Local Discharge (CFND) for Laser Pumping and Plasma Processing

2009 ◽  
Author(s):  
George Miley ◽  
Atanu Khan ◽  
Ben Ulmen ◽  
Guilherme Amadio ◽  
Hugo Leon
Keyword(s):  
Plasma Processing ◽  
Laser Pumping ◽  
Non Local

Plasma Processing of Materials

1985 ◽  
Author(s):  
Merton C. Flemings ◽  
Diran Apelian ◽  
Noel Jarrett ◽  
Bernard H. Kear ◽  
C. Joseph Mogab
Keyword(s):  
Plasma Processing

Use of RF Bias in LAPPS (Large Area Plasma Processing System)

2000 ◽  
Author(s):  
Wallace M. Manheimer ◽  
Martin Lampe ◽  
Richard F. Fernsler
Keyword(s):  
Plasma Processing ◽  
Processing System ◽  
Large Area
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