Large‐numerical‐aperture microlens fabrication by one‐step etching and mass‐transport smoothing

1994 ◽  
Vol 64 (12) ◽  
pp. 1484-1486 ◽  
Author(s):  
Z. L. Liau ◽  
D. E. Mull ◽  
C. L. Dennis ◽  
R. C. Williamson ◽  
R. G. Waarts
Keyword(s):  
Mass Transport ◽  
Numerical Aperture ◽  
One Step

scholarly journals One-step electrodeposition of Pd–CeO2 on high pore density foams for environmental catalytic processes

2018 ◽  
Vol 8 (18) ◽  
pp. 4678-4689 ◽  
Author(s):  
P. H. Ho ◽  
M. Ambrosetti ◽  
G. Groppi ◽  
E. Tronconi ◽  
J. Jaroszewicz ◽  
...  
Keyword(s):  
Mass Transport ◽  
Transport Properties ◽  
High Activity ◽  
Pore Density ◽  
Environmental Processes ◽  
One Step ◽  
Catalytic Processes

Electrodeposited Pd–CeO2 on high pore density foams shows high activity and stability for environmental processes and outstanding mass transport properties.

One-Step Preparation of Thiol-Functionalized Porous Clay Heterostructures: Application to Hg(II) Binding and Characterization of Mass Transport Issues

2009 ◽  
Vol 21 (18) ◽  
pp. 4111-4121 ◽  
Author(s):  
Aurélien Jieumboué Tchinda ◽  
Emmanuel Ngameni ◽  
Ignas Tonlé Kenfack ◽  
Alain Walcarius
Keyword(s):  
Mass Transport ◽  
Porous Clay Heterostructures ◽  
One Step

Large‐numerical‐aperture InP lenslets by mass transport

1988 ◽  
Vol 52 (22) ◽  
pp. 1859-1861 ◽  
Author(s):  
Z. L. Liau ◽  
V. Diadiuk ◽  
J. N. Walpole ◽  
D. E. Mull
Keyword(s):  
Mass Transport ◽  
Numerical Aperture

Achieving gradient-pore-oriented graphite felt for vanadium redox flow batteries: meeting improved electrochemical activity and enhanced mass transport from nano- to micro-scale

2019 ◽  
Vol 7 (18) ◽  
pp. 10962-10970 ◽  
Author(s):  
Rui Wang ◽  
Yinshi Li ◽  
Ya-Ling He
Keyword(s):  
Mass Transport ◽  
Electrochemical Activity ◽  
Graphite Felt ◽  
Micro Scale ◽  
Redox Flow Batteries ◽  
Etching Method ◽  
Flow Batteries ◽  
One Step ◽  
Vanadium Redox

A gradient-pore-oriented graphite felt electrode was prepared by a facile one-step etching method, showing improved electrochemical activity and enhanced mass transport from nano- to micro-scale in flow batteries.

Models of Thermodynamic Properties of Prominences

1979 ◽  
Vol 44 ◽  
pp. 349-355
Author(s):  
R.W. Milkey
Keyword(s):  
Thermodynamic Properties ◽  
Mass Transport ◽  
Emission Spectrum ◽  
Thermodynamic Parameters ◽  
Working Group ◽  
Physical Processes ◽  
Theoretical Concepts ◽  
Group 3 ◽  
Observational Techniques

The focus of discussion in Working Group 3 was on the Thermodynamic Properties as determined spectroscopically, including the observational techniques and the theoretical modeling of physical processes responsible for the emission spectrum. Recent advances in observational techniques and theoretical concepts make this discussion particularly timely. It is wise to remember that the determination of thermodynamic parameters is not an end in itself and that these are interesting chiefly for what they can tell us about the energetics and mass transport in prominences.

Video-Enhanced Microscopy--Better Visibility of Plant Cell Structures

1982 ◽  
Vol 40 ◽  
pp. 182-185
Author(s):  
N.S. Allen ◽  
R.D. Allen
Keyword(s):  
Diffraction Pattern ◽  
Theoretical Basis ◽  
Numerical Aperture ◽  
Gain Control ◽  
Control Unit ◽  
Camera Control ◽  
Variable Gain ◽  
Contrast Method ◽  
Fine Detail ◽  
Cell Structures

Various methods of video-enhanced microscopy combine TV cameras with light microscopes creating images with improved resolution, contrast and visibility of fine detail, which can be recorded rapidly and relatively inexpensively. The AVEC (Allen Video-enhanced Contrast) method avoids polarizing rectifiers, since the microscope is operated at retardations of λ/9- λ/4, where no anomaly is seen in the Airy diffraction pattern. The iris diaphram is opened fully to match the numerical aperture of the condenser to that of the objective. Under these conditions, no image can be realized either by eye or photographically. Yet the image becomes visible using the Hamamatsu C-1000-01 binary camera, if the camera control unit is equipped with variable gain control and an offset knob (which sets a clamp voltage of a D.C. restoration circuit). The theoretical basis for these improvements has been described.

An Interactive Minicomputer Program for the Indexing and Simulation of Electron Diffraction Patterns

1976 ◽  
Vol 34 ◽  
pp. 542-543
Author(s):  
R.P. Goehner ◽  
W.T. Hatfield ◽  
Prakash Rao
Keyword(s):  
Electron Diffraction ◽  
Real Time ◽  
Pattern Analysis ◽  
Flow Diagram ◽  
Hard Copy ◽  
Time Analysis ◽  
Real Time Analysis ◽  
Transmission Electron ◽  
One Step ◽  
Diffraction Patterns

Computer programs are now available in various laboratories for the indexing and simulation of transmission electron diffraction patterns. Although these programs address themselves to the solution of various aspects of the indexing and simulation process, the ultimate goal is to perform real time diffraction pattern analysis directly off of the imaging screen of the transmission electron microscope. The program to be described in this paper represents one step prior to real time analysis. It involves the combination of two programs, described in an earlier paper(l), into a single program for use on an interactive basis with a minicomputer. In our case, the minicomputer is an INTERDATA 70 equipped with a Tektronix 4010-1 graphical display terminal and hard copy unit.A simplified flow diagram of the combined program, written in Fortran IV, is shown in Figure 1. It consists of two programs INDEX and TEDP which index and simulate electron diffraction patterns respectively. The user has the option of choosing either the indexing or simulating aspects of the combined program.

On resolving fine periodic microstructures in the optical microscope

1989 ◽  
Vol 47 ◽  
pp. 364-365
Author(s):  
W.S. Putnam ◽  
C. Viney
Keyword(s):  
Liquid Crystalline ◽  
Numerical Aperture ◽  
Polarized Light ◽  
Normal Incidence ◽  
Optical Microscope ◽  
Angle Of Incidence ◽  
Resolution Limit ◽  
Crystalline Materials ◽  
Periodic Microstructures ◽  
Liquid Crystalline Materials

Many sheared liquid crystalline materials (fibers, films and moldings) exhibit a fine banded microstructure when observed in the polarized light microscope. In some cases, for example Kevlar® fiber, the periodicity is close to the resolution limit of even the highest numerical aperture objectives. The periodic microstructure reflects a non-uniform alignment of the constituent molecules, and consequently is an indication that the mechanical properties will be less than optimal. Thus it is necessary to obtain quality micrographs for characterization, which in turn requires that fine detail should contribute significantly to image formation.It is textbook knowledge that the resolution achievable with a given microscope objective (numerical aperture NA) and a given wavelength of light (λ) increases as the angle of incidence of light at the specimen surface is increased. Stated in terms of the Abbe resolution criterion, resolution improves from λ/NA to λ/2NA with increasing departure from normal incidence.

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