Microscopy
This microscope scans a surface with electrons to create detailed 3D‑like images of a material’s topography.
What is Scanning Electron Microscopy?
This phenomena occurs when two waves come into contact, giving us larger or smaller amplitudes. In Dr. Mcelroy's lab, it shows up as a unique pattern made by the light bending around the gold mesopyramids.
What is constructive/destructive interference?
This method identifies crystal structures by measuring how X‑rays scatter off repeating atomic planes.
What is X‑ray Diffraction?
Whether done by vapor, sputtering, or lasers, this process builds thin layers of material atom‑by‑atom onto a surface.
What is deposition?
Scientists can make specific cell parts glow under a microscope by adding molecules that absorb one color of light and emit another.
What are fluorescent dyes?
When light bends around edges or spreads out after passing through a narrow slit, it creates patterns that reveal that light behaves like a wave.
What is the diffraction?
The Physical Properties Measurement system can give us many clues about what is happening within our material. We measured this property vs temperature, allowing us to see how easily the electrons/holes are moving through the bulk of the material.
What is resistance (resistivity)?
This deposition technique, used by Dr. Meyer's lab, used a laser to ablate a target and deposit the ionized gas onto a premade crystal. This technique must take place under vacuum.
What is pulsed laser deposition?
We image the topography of our samples using this technique. It uses a laser and a cantilever to manually find the height of our sample at each point, and find the average roughness.
What is Atomic Force Microscopy?
When cooled below a critical temperature, some materials suddenly allow electric current to flow with zero resistance.
What is superconductivity?
The XRR and XRD use X-Rays to investigate the interior structure of the materials we grew. In the XRR, this property between inferfaces in in our sample allows us to precisely measure the thickness of the layers.
What is reflection?
This is one of two materials we grew in Dr. Meyer's PLD chamber. Is has a perovskite oxide structure, and grows in a crystalline lattice on our substrate.
What is SrTiO3 (STO) or SrRuO3 (SRO)?
This technique sends electrons through an ultra‑thin sample, allowing scientists to see features as small as individual atoms.
What is Transmission Electron Microscopy?
A spinning figure skater speeds up when pulling their arms in because their angular momentum stays constant while their rotational inertia decreases.
What is conservation of angular momentum?
In Dr. McElroy's lab, This surface‑analysis technique measures the energies of electrons knocked out by X‑rays, letting scientists identify which elements are on the top few nanometers of a material.
What is XPS (X-ray Photoelectron Spectroscopy)?
This technique fires electrons at a shallow angle across a crystal surface, producing a diffraction pattern that reveals how smooth or ordered a thin film is while it grows.
What is Reflection High‑Energy Electron Diffraction?
This type of microscope uses lasers and a pinhole to collect only in‑focus light, producing sharp, 3D‑like images of cells and tissues.
What is confocal microscopy?
Neon glows orange, argon glows purple, and sodium glows yellow because each element emits light at specific wavelengths, dependent on this characteristic of the element, when its electrons fall back to lower energy levels.
What is unique arrangement of electron orbitals?
In Dr. Vaquez's lab, they used X-Ray Diffraction to measure these two properties of their materials.
What are Elemental Composition and Physical Size?
Dr. McElroy (Sharad and Aakriti) use many deposition techniques in their lab. They each use shutters too keep a gaseous species or a plasma away from the substrate, while another species is deposited. This is one of them.
What is: Atomic layer deposition or
Atomic Plasma layer deposition or
Molecular Beam Epitaxy?