Fluids · Electrons · Materials
Fields & matter
Stir a fluid. Steer an electron. Look inside a material.
43 experimentsStart here
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43 experiments
Fields & matter
Electron–Matter Signal Map
Where do the signals come from inside a specimen?
20 minFields & matter
Raster Scan & Drift Recovery
Can frame registration recover a scan-distorted image?
20 minFields & matter
Electron Diffraction & Reciprocal Space
Which reciprocal-lattice points become detector spots?
20 minFields & matter
4D-STEM: One Scan, Many Virtual Images
What can one diffraction frame per probe position reveal?
25 minFields & matter
DPC: Beam Deflection & Projected Fields
When does a shifted disk measure a field?
25 minFields & matter
EELS: Energy Loss & Thin-Specimen Signals
What did the transmitted electrons lose?
20 minFields & matter
EFTEM: Energy Windows & Elemental Maps
Does a bright energy-filtered pixel mean more carbon?
25 minFields & matter
HRTEM Phase Contrast & CTF
Can the same atoms turn from dark to bright?
20 minFields & matter
TEM Bright Field, Dark Field & SAED
Do you want to select a beam, or a specimen region?
20 minFields & matter
SEM Secondary-Electron Topography
Does a brighter surface mean a taller surface?
20 minFields & matter
TEM Mass–Thickness Contrast
Why does a denser inclusion look dark in bright-field TEM?
20 minFields & matter
Photoemission & Hemispherical Analyzer
Can you separate two peaks without losing all the counts?
20 minFields & matter
ARPES Band & Fermi-Surface Mapping
How does an emission angle reveal an electronic band?
20 minFields & matter
Electron Scattering & Mean Free Paths
How thin must a specimen be to avoid plural scattering?
20 minFields & matter
Vacuum, Charging & Conductive Coatings
Can you stop charging without hiding the surface?
20 minFields & matter
Electron Dose, Noise & Damage
When does more exposure stop revealing more detail?
20 minFields & matter
Electron Wavelength & Voltage
Is higher accelerating voltage always better?
18 minFields & matter
Electron Gun Workbench
Which source can deliver a coherent, stable beam?
18 minFields & matter
Electron Optical Column
Can you focus the probe without starving its current?
18 minFields & matter
Electron Resolution & Aberration Budget
What limits the probe after spherical correction?
18 minFields & matter
How an Offset Circle Becomes a Lifting Airfoil
How do geometry, angle of attack, and the Kutta condition select circulation and pressure difference?
12 minFields & matter
Make an Electric Field Visible
How does the shape of potential predict the next force?
8 minFields & matter
Billions of Collisions in a Gas
How do random collisions become stable macroscopic laws?
7 minFields & matter
A Charge Bending through Fields
How can a magnetic field turn motion without changing speed?
10 minFields & matter
Why a Spinning Ball Curves
How does spin rearrange flow and create a sideways force?
8 minFields & matter
How One Moving Wall Drives an Entire Fluid
Why does a right-moving lid create one giant clockwise circulation inside a sealed cavity?
12 minFields & matter
How Neighbors Reconstruct a Splashing Pool
How can local kernel sums over moving particles recover density, pressure, approximate incompressibility, and a free surface?
16 minFields & matter
How a Tiny Ripple Rolls into a Shear Vortex
When does a velocity jump overcome gravity, surface tension, and dissipation to amplify an interface perturbation?
16 minFields & matter
Bend a Wall, Transform a Flow
How can a complex map preserve angles while accelerating flow around polygonal corners?
12 minFields & matter
Stretch the Dye, Keep the Rotation Ledger
Why can dye fold and mix while a resolved inviscid flow keeps energy and enstrophy?
14 minFields & matter
Let Pressure Write the Shock Diamonds
How does an exit pressure mismatch turn a straight supersonic jet into a train of expansion and compression waves?
16 minFields & matter
Push a Numerical Jet by Hand
How do advection, diffusion, and pressure projection separately change dye, vortices, and divergence?
12 minFields & matter
How Phase Turns Flapping into Propulsion
How does the phase between heave and pitch change unsteady lift, wake direction, and cycle-averaged thrust?
14 minFields & matter
Why a Symmetric Wake Breaks Itself
Why do the two shear layers shed alternately even when the cylinder remains fixed?
12 minFields & matter
How Signed Singularities Assemble Fluid Orbits
How do point-vortex positions and circulations produce rotation, translation, leapfrogging, and few-body chaos?
14 minFields & matter
How One Diaphragm Creates Three Compressible Waves
Why does one initial jump split into a shock, contact discontinuity, and rarefaction fan?
15 minFields & matter
How a Thermal Gradient Organizes into Rolls
When can buoyancy defeat viscous and thermal diffusion to destabilize a quiet conducting layer?
12 minFields & matter
Immune Design from Molecule to Organoid
How can one molecular recognition event cross a cell threshold and become tissue-wide clearance?
12 minFields & matter
From Hard Spheres to Boltzmann
How can deterministic collisions be compressed into a reliable kinetic equation while controlling recollision correlations?
14 minFields & matter
Why Two Vortex Rings Leapfrog
How does the rear ring shrink and pass through the front, and do the three-dimensional shape and numerical histories explain the same exchange?
12 minFields & matter
How Rotating Shear Fractures into Taylor Cells
Why does purely azimuthal Couette flow grow radial–axial secondary circulation?
14 minFields & matter
WBE and the Quarter-Power Pace of Life
How can a space-filling delivery network connect body mass to metabolism and biological time?
12 minFields & matter
How Stars Build Elements up to Iron
Why does fusion release energy only until nuclei approach iron?
15 min
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