Adhesion force measurement system for micro-objects in a scanning electron microscope

2000 ◽  
Vol 71 (8) ◽  
pp. 3123-3131 ◽  
Author(s):  
Hideki T. Miyazaki ◽  
Yasushi Tomizawa ◽  
Koichi Koyano ◽  
Tomomasa Sato ◽  
Norio Shinya
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Measurement System ◽  
Adhesion Force ◽  
Force Measurement ◽  
Force Measurement System ◽  
Scanning Electron

Optical force measurement system with mirror probe for nanoprobing inside a scanning electron microscope

2010 ◽  
Vol 87 (5-8) ◽  
pp. 1410-1412 ◽  
Author(s):  
Kai Arstila ◽  
Thomas Hantschel ◽  
Stephan Kleindiek ◽  
Jochen Sterr ◽  
Quentin Vaquette ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Measurement System ◽  
Force Measurement ◽  
Optical Force ◽  
Force Measurement System ◽  
Scanning Electron

Calibration of Carbon Nanotube Probes for Pico-Newton Order Force Measurement Inside a Scanning Electron Microscope

2004 ◽  
Vol 16 (2) ◽  
pp. 155-162 ◽  
Author(s):  
Masahiro Nakajima ◽  
◽  
Fumihito Arai ◽  
Lixin Dong ◽  
Toshio Fukuda
Keyword(s):  
Electron Microscope ◽  
Carbon Nanotube ◽  
Scanning Electron Microscope ◽  
Elastic Moduli ◽  
Force Measurement ◽  
Ultrasonic Waves ◽  
Copper Electrodes ◽  
Atomic Force ◽  
Afm Cantilever ◽  
Scanning Electron

A method is presented for pico-Newton (pN) order force measurement using a carbon nanotube (CNT) probe, which is calibrated by electromechanical resonance. A CNT probe is constructed by attaching a CNT to the end of a tungsten needle or an atomic force microscope (AFM) cantilever using nanorobotic manipulators inside a field-emission scanning electron microscope (FE-SEM). Conductive electron-beam-induced deposition (EBID) is used for the fixation of CNTs with an internal vaporized precursor W(CO)6. For manipulating them easily and quickly, CNTs are dispersed in ethanol by ultrasonic waves and oriented on copper electrodes by electrophoresis. The elastic moduli of CNT probes are calibrated for use as a force measurement probe by electrically exciting at fundamental frequency. We analyzed the resolution of force measurement using a CNT probe. This force measurement can be used to characterize the mechanical properties of nanostructures and to measure friction or exfoliation forces in nanometer order.

scholarly journals Sifat Optik Campuran Pasta TiO2 Partikel Nano dan Pasta TiO2 Reflektor pada Foto Elektroda Dye Solar Cell

2016 ◽  
Vol 14 (2) ◽  
pp. 36
Author(s):  
Lilis Retnaningsih ◽  
Lia Muliani ◽  
Goib Wiranto
Keyword(s):  
Electron Microscope ◽  
Solar Cell ◽  
Scanning Electron Microscope ◽  
Measurement System ◽  
Dye Sensitized Solar Cell ◽  
Dye Sensitized ◽  
Uv Visible ◽  
Scanning Electron

Dalam penelitian ini, kami mengamati pengaruh dari campuran pasta TiO2 partikel nano dan pasta TiO2 reflektor yang dapat meningkatkan kinerja dye-sensitized solar cell (DSSC). Senyawa TiO2 reflektor ini berfungsi sebagai lapisan penghambur, yang diharapkan dapat meningkatkan kinerja DSSC. Dalam penelitian ini, foto elektroda DSSC dibuat dengan mencampurkan bahan pasta TiO2 partikel nano dan bahan pasta TiO2 reflektor dengan rasio dari dua bahan tersebut yang telah ditentukan. Pasta pertama adalah campuran dari bahan utama dan bahan pencampur dengan perbandingan antara pasta TiO2 partikel nano dan pasta TiO2 reflektor sebesar 95% : 5%, pasta kedua adalah campuran dengan perbandingan 90% : 10%, dan pasta ketiga dengan perbandingan 85% : 15%. Pasta hasil campuran kemudian dilapiskan pada permukaan kaca konduktif yang memiliki dimensi konduktif sebesar 1 cm x 1 cm. Sel surya DSSC hasil proses pabrikasi kemudian diukur menggunakan I-V measurement system dan Sun simulator untuk mengetahui arus, tegangan, dan efisiensi yang dihasilkan. Lapisan foto elektroda DSSC diukur dengan menggunakan UV - Visible absorbance untuk menentukan karakteristik daya serapnya terhadap cahaya yang datang pada permukaan TiO2 hasil pencampuran. Kami juga telah melakukan pengukuran menggunakan alat SEM (scanning electron microscope) untuk mengetahui karakteristik permukaan hasil pencampuran kedua jenis pasta yang telah digunakan. Hasil pengukuran menunjukkan bahwa DSSC hasil pencampuran pasta dengan perbandingan 85% pasta TiO2 partikel nano terhadap 15% pasta TiO2 reflektor memiliki ukuran partikel yang paling besar dan menghasilkan efisiensi yang paling besar pula.

scholarly journals Treatment of Turbine Blades via Cr2O3-Ni5%Al System Using Plasma Thermal Spraying

2021 ◽  
pp. 1-5
Author(s):  
Esraa Mouhson ◽  
Sufian Humeedi ◽  
Salih Darweesh ◽  
Adnan Ahmed
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Adhesion Force ◽  
Turbine Blades ◽  
Thermal Spraying ◽  
Hardness Test ◽  
Reinforcement Rate ◽  
Final Thickness ◽  
A Value ◽  
Scanning Electron

A plasma thermal spraying method was used for the purpose of coating the pre-prepared surfaces of turbine blades. Chromium oxide (Cr2O3) was used as a matrix reinforced with a metal material of Ni-5%Al at rates of 10, 20, 30, 40 and 50. The cermet powders were stirred for one hour then used to coat bases of steel (316L). A spray distance of 8cm was applied, and the binding material of Ni-22%Cr-10%Al-1%Y was sprayed with a thickness of 100μm. Then, the reinforced matrix was sprayed with a thickness of 300–350μm and the final thickness of the samples prepared was 400–450μm. The samples produced were sintered at 900°C for an hour and a half and underwent a hardness test, which gave the best hardness of the samples after sintering at a reinforcement rate of 50% by 612Hv. The lowest porosity value for the above rate was obtained at 3.88%. The results of the adhesive strength gave a value of 31.5 MPa after sintering and at the same 50% reinforcement. The results of the scanning electron microscope (SEM) showed that there was weakness and cracking in the coating layers at the low reinforcement ratios. However, the mechanical and physical properties improved with the increase in reinforcement ratios to reach the highest value of 50%. KEYWORDS Adhesion force, ceramites, scanning electron microscope, Vickers hardness

The Alteration of the Pore Spaces in Sandstones

1973 ◽  
Vol 31 ◽  
pp. 210-211
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
The Other ◽  
Coarse Grained ◽  
Depositional Fabric ◽  
Soluble Components ◽  
Scanning Electron ◽  
Shape And Size

The pore spaces in sandstones are the result of the original depositional fabric and the degree of post-depositional alteration that the rock has experienced. The largest pore volumes are present in coarse-grained, well-sorted materials with high sphericity. The chief mechanisms which alter the shape and size of the pores are precipitation of cementing agents and the dissolution of soluble components. Each process may operate alone or in combination with the other, or there may be several generations of cementation and solution.The scanning electron microscope has ‘been used in this study to reveal the morphology of the pore spaces in a variety of moderate porosity, orthoquartzites.

The Broad Applications of the Scanning Electron Microscope

1969 ◽  
Vol 27 ◽  
pp. 20-21
Author(s):  
C. T. Nightingale ◽  
S. E. Summers ◽  
T. P. Turnbull
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Light Microscopy ◽  
Surface Topography ◽  
Great Depth ◽  
Resolving Power ◽  
Depth Of Field ◽  
Pictorial Representations ◽  
Scanning Electron

The ease of operation of the scanning electron microscope has insured its wide application in medicine and industry. The micrographs are pictorial representations of surface topography obtained directly from the specimen. The need to replicate is eliminated. The great depth of field and the high resolving power provide far more information than light microscopy.

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