Electron microscopy techniques
The environmental scanning electron microscope (ESEM) is a scanning electron microscope (SEM) that allows for the option of collecting electron micrographs of specimens that are wet, uncoated, or both by allowing for a gaseous environment in the specimen chamber. Although there were earlier successes at viewing wet specimens in internal chambers in modified SEMs, the ESEM with its specialized electron detectors (rather than the standard Everhart-Thornley detector) and its differential pumping systems, to allow for the transfer of the electron beam from the high vacuum in the gun area to the high pressure attainable in its specimen chamber, make it a complete and unique instrument designed for the purpose of imaging specimens in their natural state. The instrument was designed originally by Gerasimos Danilatos while working at the University of New South Wales. (Wikipedia).
DIY Scanning Electron Microscope - Overview
Today, I finally produced an image with my DIY scanning electron microscope. I've spent the last few months working on this project, and am encouraged by today's success. There is still a lot of work left to do in making the image higher resolution, and eliminating sources of noise, howe
From playlist Scanning Electron Microscope
DIY Scanning Electron Microscope - Operation procedure
After getting back from Maker Faire (which is always a hugely enjoyable and inspiring event), I thought that my microscope might need some repairs. As it turned out, I only had to change the filament and tighten some screws that came loose during the trip back from the Faire. The microsc
From playlist Scanning Electron Microscope
Electron beam control in a scanning electron microscope
I describe electron beam optics and deflection as they are employed in scanning electron microscopy. http://web.jfet.org/vclk/ - Deflection amplifier http://www.johngineer.com/blog/?p=648 - CRT Christmas tree http://www.fei.com/ - FEI Company
From playlist Scanning Electron Microscope
DIY Scanning Electron Microscope - Electron Gun Detail
I explain the detailed operation of the electron gun in my DIY scanning electron microscope project.
From playlist Scanning Electron Microscope
DIY Scanning Electron Microscope - Sources, Costs and References
Please visit my blog post to see the references and sources for this project: http://benkrasnow.blogspot.com/2011/03/diy-scanning-electron-microscope_26.html
From playlist Scanning Electron Microscope
Atoms in Action with Professor Pratibha Gai
Chemical reactions are the backbone of technologies at the heart of modern society, but what is happening at the atomic level? In this Ri lecture, Professor Pratibha Gai explains how she developed an atomic resolution-environmental transmission electron microscope (atomic resolution-ETEM)
From playlist Ri Talks
Electron Microscopy (TEM and SEM)
We've talked a lot about light microscopy, but this technique has inherent limitations in resolution and magnification. The next paradigm in microscopy that emerged in the middle of the 20th century was electron microscopy. Because electrons have much shorter wavelengths than photons, elec
From playlist Microbiology/Infectious Diseases
How do you describe a fossil specimen?
Invertebrate Paleontology and Paleobotany Lecture 02 Invertebrate Paleontology and Paleobotany is a graduate level course in paleontology at Utah State University, which covers the major groups of marine invertebrates, fossil plants, and the important techniques and tools used in the fiel
From playlist Utah State University: Invertebrate Paleontology and Paleobotany (CosmoLearning Geology)
Electron microscope image capture with an oscilloscope
T-shirt: http://www.teespring.com/AppliedScience 11:10 - Skip directly to seeing the collected images I show how I collect digital electron microscope images with my Tek MDO3000 oscilloscope.
From playlist Electronics
Mod-04 Lec-40 Concluding Lecture
Nano structured materials-synthesis, properties, self assembly and applications by Prof. A.K. Ganguli,Department of Nanotechnology,IIT Delhi.For more details on NPTEL visit http://nptel.ac.in
Materialism Podcast Ep 10. Seeing with Electrons
The optical microscope was discovered in the 17th century and ever since has been a staple of scientific discovery. It uncovered germs and let humanity investigate the microscopic world. However, optical microscopes face a limit to their resolution since they rely on visible light. If mate
From playlist Materialism Podcast
Microscopes: optical vs SEM vs TEM vs AFM
In order to examine defects and imperfections in materials, we need microscopes capable of enhancing our vision beyond the human eye capability. To access the micro, nano, and atomic scales needed we must rely on different microscopes. The microscope options vary immensely in terms of cost
From playlist Materials Sciences 101 - Introduction to Materials Science & Engineering 2020
The Electron Microscope: Where did it come from? | Stuff of Genius
Once we exhausted the ability to magnify objects through the use of light and lenses, we had to look for a new method. Enter the electron microscope. A beam of electrons can get in more of the nooks and crannies of matter to see more detail. Stuff of Genius tells the story behind everyday
From playlist Gizmos & Widgets
The World Outside: A Changing Environment and How It Affects Us
Dr. Gary Schoolnik discusses cholera from medical, epidemiological, ecological, and economic perspectives, focusing on the links between agricultural practices, particularly the advent of chemical fertilizers, and climate change on cholera epidemics in South Asia. Stanford Mini Med Sch
From playlist Lecture Collection | Mini Med School
Juan Carlos Idrobo - Quantum Phenomena & Electron Microscopy: New Possibilities & Limitations
Recorded 28 October 2022. Juan-Carlos Idrobo of the University of Washington presents "Into the Realms of Quantum Phenomena with Electron Microscopy: Exploring New Possibilities & Limitations" at IPAM's Mathematical Advances for Multi-Dimensional Microscopy Workshop. Abstract: Electron ene
From playlist 2022 Multi-Modal Imaging with Deep Learning and Modeling
Paul Weiss - Leveraging Sparsity in Scanning Probe Microscopy - IPAM at UCLA
Recorded 15 September 2022. Paul Weiss of the University of California, Los Angeles, presents "Leveraging Sparsity in Scanning Probe Microscopy" at IPAM's Computational Microscopy Tutorials. Learn more online at: http://www.ipam.ucla.edu/programs/workshops/computational-microscopy-tutorial
From playlist Tutorials: Computational Microscopy 2022
How Is Our Green Future Dependent On Rare-Earth Elements? | Treasure Hunters | Spark
For thousands of years, they lay dormant in the soil until suddenly, they became the driving force behind a technical revolution: rare earths. Researchers drill for new deposits and find more environmentally friendly ways of processing the materials. A fascinating glimpse at cutting-edge r
From playlist The Science Of Nature | Spark X Earth Stories X Real Wild X Pets & Vets
Robert Wolkow - Atom-Defined Devices, Ultra-Fast Classical Devices, and Diverse Quantum Devices
Recorded 29 November 2022. Robert Wolkow of the University of Alberta presents "Atom-Defined Devices, Ultra-Fast, Ultra-Low Power Classical Devices and Diverse Quantum Devices" at IPAM's Multi-Modal Imaging with Deep Learning and Modeling Workshop. Abstract: Most all atom-defined structure
From playlist 2022 Multi-Modal Imaging with Deep Learning and Modeling
I'm building a physical vapor deposition rig, which will be an interesting tool for creating optical coatings, SEM sample preparation, and maybe even thin film transistors. So far, I only have the pump and Penning gauge connected to the chamber. Soon, I'll have high-current and high-voltag
From playlist Chemistry and Materials