Electron microscopy techniques
High-resolution transmission electron microscopy is an imaging mode of specialized transmission electron microscopes that allows for direct imaging of the atomic structure of samples. It is a powerful tool to study properties of materials on the atomic scale, such as semiconductors, metals, nanoparticles and sp2-bonded carbon (e.g., graphene, C nanotubes). While this term is often also used to refer to high resolution scanning transmission electron microscopy, mostly in high angle annular dark field mode, this article describes mainly the imaging of an object by recording the two-dimensional spatial wave amplitude distribution in the image plane, in analogy to a "classic" light microscope. For disambiguation, the technique is also often referred to as phase contrast transmission electron microscopy. At present, the highest point resolution realised in phase contrast transmission electron microscopy is around 0.5 ångströms (0.050 nm). At these small scales, individual atoms of a crystal and its defects can be resolved. For 3-dimensional crystals, it may be necessary to combine several views, taken from different angles, into a 3D map. This technique is called electron crystallography. One of the difficulties with high resolution transmission electron microscopy is that image formation relies on phase contrast. In phase-contrast imaging, contrast is not intuitively interpretable, as the image is influenced by aberrations of the imaging lenses in the microscope. The largest contributions for uncorrected instruments typically come from defocus and astigmatism. The latter can be estimated from the so-called Thon ring pattern appearing in the Fourier transform modulus of an image of a thin amorphous film. (Wikipedia).
Carl Zeiss S-planar lens pt.2: resolution explained
In this video we take a closer look at the maximum imaging resolution of the Carl Zeiss S-Planar lens. Assuming it satisfies the Rayleigh limit, the maximum resolution of this lens should be around 723nm or 0.7um according to theory. Measurements show that the resolution is actually somewh
From playlist Carl Zeiss S-planar Photolithography Lens
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
Physics - Optics: Circular Aperture - Angle of Resolution (3 of 6) Resolution Power of the Human Eye
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the resolution ability of the human eye.. Next video in series: http://youtu.be/H2YJYFXo3yo
From playlist PHYSICS 61 DIFFRACTION OF LIGHT
Physics - Optics: Circular Aperture - Angle of Resolution (5 of 6) Resolution of the Hubble
Visit http://ilectureonline.com for more math and science lectures! In this video I will find the resolution of the Hubble Space Telescope. Next video in series: http://youtu.be/yFFW20YnGsQ
From playlist PHYSICS 61 DIFFRACTION OF LIGHT
Mary Scott - Supervised and Unsupervised approaches for Electron Microscopy Data Analysis
Recorded 01 December 2022. Mary Scott of the University of California, Berkeley, presents "Supervised and Unsupervised approaches for Electron Microscopy Data Analysis" at IPAM's Multi-Modal Imaging with Deep Learning and Modeling Workshop. Abstract: Recently, materials science has undergo
From playlist 2022 Multi-Modal Imaging with Deep Learning and Modeling
Peng Wang - Electron Ptychography: Emerging Computational Microscopy for Physical/Biological Science
Recorded 28 October 2022. Peng Wang of the University of Warwick presents "Electron Ptychography: An Emerging Computational Microscopy for Physical and Biological Sciences" at IPAM's Mathematical Advances for Multi-Dimensional Microscopy Workshop. Abstract: Ptychography is an emerging comp
From playlist 2022 Mathematical Advances for Multi-Dimensional Microscopy
Spectrum of Hg Lamp / amazing science experiment
Identify the spectral lines of Hg lamp Enjoy the amazing colors! Music: https://www.bensound.com/
From playlist Optics
Physics 59 Optical Instruments (10 of 20) Magnification of a Microscope: Exact Approach
Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will learn the EXACT approach to find the magnification of a microscope given the length of microscope=20cm, focal distance object
From playlist PHYSICS 59 OPTICAL INSTRUMENTS
Physics - Optics: Diffraction Grating (7 of 7) Rayleigh's Criteria for Resolution
Visit http://ilectureonline.com for more math and science lectures! In this video I will discuss Rayleigh's criteria for resolution. First video in series: http://youtu.be/-pki5mp0wm4
From playlist PHYSICS 61 DIFFRACTION OF LIGHT
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
Mod-01 Lec-37 Transmission Electron Microscopy
Nanostructures and Nanomaterials: Characterization and Properties by Characterization and Properties by Dr. Kantesh Balani & Dr. Anandh Subramaniam,Department of Nanotechnology,IIT Kanpur.For more details on NPTEL visit http://nptel.ac.in.
From playlist IIT Kanpur: Nanostructures and Nanomaterials | CosmoLearning.org
Petar Petrov - Laser phase-contrast transmission electron microscopy & computational opportunities
Recorded 15 November 2022. Petar Petrov of the University of California, Berkeley, presents "Laser phase-contrast transmission electron microscopy and associated computational opportunities" at IPAM's Cryo-Electron Microscopy and Beyond Workshop. Abstract: A phase plate can provide optimum
From playlist 2022 Cryo-Electron Microscopy and Beyond
Sarah Haigh - Probing atomic behaviour in liquids with STEM : opportunities for machine learning
Recorded 30 November 2022. Sarah Haigh of the University of Manchester presents "Probing atomic behaviour in liquids with STEM : opportunities for machine learning" at IPAM's Multi-Modal Imaging with Deep Learning and Modeling Workshop. Learn more online at: http://www.ipam.ucla.edu/progra
From playlist 2022 Multi-Modal Imaging with Deep Learning and Modeling
Alberto Bartesaghi - Imaging biomolecules & high-resolution single-particle cryo-electron microscopy
Recorded 13 October 2022. Alberto Bartesaghi of Duke University presents "Imaging biomolecules using high-resolution single-particle cryo-electron microscopy" at IPAM's Diffractive Imaging with Phase Retrieval Workshop. Abstract: Single-particle cryo-electron microscopy (EM) is a popular t
From playlist 2022 Diffractive Imaging with Phase Retrieval - - Computational Microscopy
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
Nigel Browning - Inpainting Approaches to Dose Control in High Resolution and In-Situ STEM
Recorded 24 October 2022. Nigel Browning of the University of Liverpool presents "Inpainting Approaches to Dose Control in High Resolution and In-Situ STEM" at IPAM's Mathematical Advances for Multi-Dimensional Microscopy Workshop. Abstract: For many imaging and microanalysis experiments u
From playlist 2022 Mathematical Advances for Multi-Dimensional Microscopy
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
Physics 59 Optical Instruments (11 of 20) Magnification of a Microscope: Example
Visit http://ilectureonline.com for more math and science lectures! To donate: http://www.ilectureonline.com/donate https://www.patreon.com/user?u=3236071 We will find the magnification of strained viewing=? and relaxed viewing=? of a microscope given the length of microscope=20cm, foca
From playlist PHYSICS 59 OPTICAL INSTRUMENTS