scholarly journals A secondary stage design for the preparation of microfossils for the SEM

1993 ◽  
Vol 12 (2) ◽  
pp. 154-154
Author(s):  
Stephen Tatman
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Low Cost ◽  
Sample Tube ◽  
Stage Design ◽  
Single Carrier ◽  
Secondary Stage ◽  
Scanning Electron ◽  
Made In

Abstract. The preparation of microfossil specimens for study with the scanning electron microscope involves the transfer of material from slides to stubs. Specimens must then be oriented and mounted securely. To do this accurately the slide and stub should both be viewed through a stereomicroscope. However due to differences in shape and height, both surfaces are not usually in the plane of focus at the same time. Many micropalaeontologists routinely use small boxes or sample tube lids to hold the stub and refocus before finally mounting the specimens. The risk of dropping specimens is reduced by using a single carrier, securely holding both the slide and stub. The design illustrated below (fig.1) was developed from a prototype constructed from cardboard and plastic. The metal unit can easily be made in a workshop at a very low cost or cardboard versions made in the laboratory.The stage is based on the principle that both slide and stub should be held securely, close together and in the same plane of focus. The slide holders should be secure but not too tight otherwise the stub may be jarred as slides are changed. The number of slides which can be held on one unit may be varied. The presence of two holders has proved useful, any more could make the unit cumbersome. If the microscope to be used does not have a wide stage then it may prove more practical to have only one holder.The stub holders allow the stub to be clamped to . . .

Effect of Kaolin Particle Size Towards Preparation of Kaolin Ceramic Membrane

2021 ◽  
Vol 02 (01) ◽  
Author(s):  
Siti Khadijah Hubadillah ◽  
◽  
Norsiah Hami ◽  
Nurul Azita Salleh ◽  
Mohd Riduan Jamalludin ◽  
...  
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Field Emission ◽  
Preliminary Data ◽  
Membrane Structure ◽  
Ceramic Membrane ◽  
Low Cost ◽  
Dense Structure ◽  
Scanning Electron

The purpose of this work is to study the effect of kaolin particle size for the preparation of low cost ceramic membrane suspension and ceramic membrane structure. Kaolin particle size is categorized into two categories; i) ≤ 1µm and ii) ≥ 1 µm. The suspension is prepared via stirring technique under 1000 rpm at 60°C. The particle size of kaolin is characterized using field emission scanning electron microscope (FESEM) and the prepared suspension is characterized in term of its viscosity. Results indicate that the particle size gave significant effect to the viscosity of ceramic membrane suspension. Preliminary data showed that kaolin with particle size ≤ 1µm resulted ceramic membrane with dense structure.

scholarly journals Characteristics of Active Carbon from Utilization of Red Chili Trees (Capsicum annuum L)

2019 ◽  
Vol 2 (1) ◽  
pp. 9-13
Author(s):  
Ni Made Dwidiani ◽  
Putu Wijaya Sunu ◽  
Gusti Ngurah Nitya Santhiarsa
Keyword(s):  
Activated Carbon ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Elemental Composition ◽  
Active Carbon ◽  
Chemical Activation ◽  
Morphological Structure ◽  
Testing Procedure ◽  
Scanning Electron ◽  
Made In

This work studies the use of red chilli tree (capsicum anuumm L) waste as material of activated carbon and examines the morphological structure and elemental composition of the activated chili trees. The morphological structure was measured at TekMIRA (Pusat Penelitian dan Pengembangan Teknologi Mineral dan Batubara, Bandung) by using the scanning electron microscope (SEM), and the composition of the elements of carbon, hydrogen, nitrogen and ash is determined by the ultimate testing analysis with the ASTM D5373 standard. In the testing procedure, activated carbon is made from red chili tree waste by dehydration with a temperature of 2000 C for 1 hour and carbonized with a temperature of 3750 C for 1 hour. Then, the chemical activation (NaOH) is made in variation of concentration of 1%, 3%, and 5% with soaked time 24 hours, and dried at 2000 C for one hour. The carbonization at a concentration of 1% (NaOH) gave the best result on activated carbon from red chili trees.

scholarly journals Gesture-Based Control of the Scanning Electron Microscope Using a Low-Cost Webcam Sensor

2018 ◽  
Vol 24 (S1) ◽  
pp. 496-497
Author(s):  
B Wong ◽  
BC Breton ◽  
DM Holburn ◽  
NHM Caldwell
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Low Cost ◽  
Scanning Electron

scholarly journals Ortsteins in the sod-podzolic pseudogleyed soils of the Beskydy Precarpathians

2019 ◽  
Vol 53 ◽  
pp. 277-287
Author(s):  
Zinoviy Pankiv ◽  
Olena Kalynych
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Elemental Composition ◽  
Soil Formation ◽  
Accumulation Factor ◽  
X Ray ◽  
Modern Soil ◽  
Different Parts ◽  
Scanning Electron ◽  
Made In

On the basis of morphological and laboratory-analytical researches it is established that in the profile of sod-podzolic pseudogleyed soils of the Beskydy Precarpathians are formed ortsteins that have clear outer contours, concentric inner structure with alternation of rust-red circles. Two ranges for the formation of ortsteins in the investigation soils were established: in the overiluvial part of the profile and the transition to the rock horizon. Within the НЕgl horizon, the content of ortsteins is 2.8 %, and in the fractional composition, the fraction is from 2.1 to 3.0 mm (37.5 %). The highest content of ortsteins (7.7 %) is characteristic of the Ehgl horizon, within which the fraction from 7.1 to 10.0 mm (27.2 %) prevails. Within the Pigl horizon, large ortsteins of 1.0 to 5.0 cm in size are oval and tubular with a concentric inner structure, and their content is 17.6 %. Ortsteins in the sod-podzolic pseudogleyed soils were formed as a result of alternation of redox conditions with the participation of specific, nonspecific microflora and glesish-eluvial, segregation processes of soil formation. The small ortsteins in the overiluvial part of the profile are the result of modern soil formation, and the large ones within the Pigl horizon are relict and associated with the early stages of soil formation in the Precarpathians. In order to identify the genesis and elemental composition, a plate of tubular ortstein with a diameter of 1.2 cm, which was selected from the Pigl horizon (220–240 cm), was made. In different parts of the plate, differing in colour, four points up to 1 μm in size (two against a light background and two against a dark one) were selected, within which elemental composition was determined by micro-X-ray spectrometry. The measurements were performed on a scanning electron microscope REM-106 (Ukraine) with a resolution of 5 nm and an energy-dispersive X-ray detector. The study of ortstein using a scanning electron microscope revealed that the formation of black rings within the tubular ortstein is due to an increase in the percentage of Manganese in 1.6–3.4, Aluminium in 1.4–2.3 and Calcium in 2.1–5.4 times. The percentage of Ferum in different parts of the ortstein is approximately the same, which determines its rusty-brown colour. Key words: ortsteins, sod-podzolic pseudogleyed soils, Beskydy Precarpathians, the accumulation factor, electron-scanning microscope.

A NOVEL NANOFABRICATION USING MICRO DROPLET JETTING SYSTEM

2006 ◽  
Vol 05 (06) ◽  
pp. 809-813
Author(s):  
XIAORAN LI ◽  
JUN XU ◽  
LEI ZHAO ◽  
XIAO GUO ◽  
WEI HUANG
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
High Stability ◽  
High Reliability ◽  
Low Cost ◽  
Luminescent Materials ◽  
Patterned Surface ◽  
Characteristic Wavelength ◽  
Micro Topography ◽  
Scanning Electron

This study briefly reports a newly developed nanopatterning technology utilizing a so-called micro droplet jetting system, which can be used in various applications such as nanofabrication. Compared with the conventional methods, this technology has the advantages as follows: it can be manipulated easily and patterned freely as the user requires; furthermore, it shows high-reliability and high-stability with very low cost. The typical specs of the micro droplet jetting system for fabricating nanodevice show as follows: (1) nanoparticle size: 50–60 nm; (2) characteristic wavelength: 400–450 nm; (3) volume of droplet: 6 ppl; (4) size of pixel: 70 μm. In this article, the nanopatterning technology adopting the micro droplet jetting system has been demonstrated to be useful for nanopatterning the pixels which consist of nanoparticles, organic luminescent materials. In addition, the micro topography and the luminescent property of the patterned surface have been characterized by using Scanning Electron Microscope (SEM) and fluorescence microscope, respectively. Finally, the fluorescence of the patterned nanoparticles was observed.

Co(OH)2 ELECTROCATALYST DECORATED ON TiO2 FILM FOR ENHANCED PHOTOELECTROCATALYTIC WATER OXIDATION

2020 ◽  
Vol 27 (11) ◽  
pp. 2050003
Author(s):  
HONGXIA LI ◽  
CHAO YANG ◽  
JIAN ZHANG ◽  
XIANGUO LIU ◽  
XUEFENG ZHANG
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Water Splitting ◽  
Transmission Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Water Oxidation ◽  
Low Cost ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

Recently, Co(OH)2 has gained much attention as a promising electrocatalyst. Herein, we synthesized Co(OH)2-decorated TiO2 film for electrocatalytic water splitting by a facile and low-cost electrochemistry method, which possessed enhanced performance for oxygen evolution reaction. The results of X-ray diffractometry, transmission electron microscope, scanning electron microscope and X-ray photoelectron spectroscopy verify the successful decoration of Co(OH)2 electrocatalysts onto the surface of TiO2. Moreover, photoelectrocatalytic measurements illustrate that the Co(OH)2-decorated TiO2 shows higher current density than pure TiO2 sample. The results obtained in this work give deep insights into the development of photoelectrochemical water splitting.

Key Fabrication Technology Research of Exploding Foil Initiator

2013 ◽  
Vol 347-350 ◽  
pp. 1207-1210
Author(s):  
Jun Jun Lv ◽  
Qing Xuan Zeng ◽  
Ming Yu Li ◽  
Qing Xia Yu
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Magnetron Sputtering ◽  
Production Process ◽  
Low Cost ◽  
Wet Etching ◽  
Technology Research ◽  
Fabrication Technology ◽  
Manufacturing Method ◽  
Scanning Electron

In order to realize consistency and low cost in the production process of the exploding foil initiator, the manufacturing method of exploding foil initiator was studied using micro processing technology. Microcrystalline glass was used as substrate, and magnetron sputtering,photolithography and wet etching technology were utilized to product the metal bridge foil on the surface of the substrate. SU-8 photoresist was used as the barrel material and scanning electron microscope was exploited to characterize structure of the initiator. Through the electrical tests, the flyer was successfully generated and after the barrel had a good integrity.

In Situ SEM Observations of Sintering of Gold Compacts

1976 ◽  
Vol 34 ◽  
pp. 440-441
Author(s):  
E. R. Levin ◽  
G. R. Auth ◽  
K. R. Bube
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Video Tape ◽  
High Magnification ◽  
Ceramic Substrates ◽  
Direct Observations ◽  
Ceramic Surfaces ◽  
Scanning Electron ◽  
Made In

As part of a study of metallization of preglazed ceramic surfaces for hybrid microcircuits, direct observations of the sintering of gold powders at temperatures in the 800-900°C range have been made in the scanning electron microscope. The changes occurring in the layers at the high temperatures were followed in detail at high magnification. Video tape recordings were made showing the sintering of the gold and the accompanying flow of the glass bonding medium.The specimens were specially prepared for the SEM studies on thin rectangular ceramic substrates 0.13mmx2mmx8mm. The unsintered gold powder, dispersed in an organic vehicle, was screen-printed in 1 mm-wide stripes along the length of substrate. Prior to sintering, the organic binder was removed by prefiring in air, typically at 400 °C for two minutes (Fig. 1). An intermediate layer of lead-borosilicate glass was used between the substrate and the metal compact to promote adhesion on sintering.

Interfacing a Personal Computer to an Analog Scanning Electron Microscope for Storing Images on Optical Disks

1990 ◽  
Vol 48 (2) ◽  
pp. 84-85
Author(s):  
Mark H. Ransick ◽  
Chadwick D. Barklay
Keyword(s):  
Image Analysis ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Low Cost ◽  
Hard Copy ◽  
Analog To Digital ◽  
Optical Disks ◽  
Electron Microscopes ◽  
Scanning Electron Microscopes ◽  
Scanning Electron

Most manufacturers of scanning electron microscopes (SEM) now offer models that display an image digitally. This holds many advantages, including the ability to store the image on a disk and perform image analysis on the sample. Most SEMs in service, however, produce only an analog video output; they do not have the ability to digitize the image. Film is the only method of storing images.Consequentially, film is a significant portion of every microscopy laboratory’s budget. Completely eliminating the use of film from use is not practical. There will always be the need to examine a hard copy of the image; many programs require duplicate copies of each image generated; and it is sound practice to keep a copy of each image on file. By archiving digital images to an inexpensive media, the amount of film used or the time devoted to processing negatives can be greatly reduced.By using personal computers (PCs)s, with a digitizing board and analog to digital (A/D) board, it is possible to construct a relatively low cost digitizing system for any SEM.

Bevel Etching: A Low Cost Alternative to FIB

2007 ◽  
Author(s):  
B. Seidl ◽  
J. Walter ◽  
M. Kirchberger
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Failure Analysis ◽  
Electronic Packaging ◽  
Low Cost ◽  
Ion Beam ◽  
Preparation Technique ◽  
Industrial Manufacturing ◽  
Cost Efficient ◽  
Scanning Electron

Abstract Microstructural diagnostic for electronic packaging development and failure analysis under industrial manufacturing conditions require fast but reliable preparation routines. The aim of the presented poster is to introduce a time and cost efficient preparation technique for FESEM (field emission scanning electron microscope) investigations with focus on typical issues in electronic packaging development and failure analysis. The new ion beam based technique acts as a low cost alternative to FIB, able to prepare much wider section areas, combined in a tool, which can also be used for standard ion beam polishing processes.

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