ScienceGL Inc. has developed multiple layer visualization engine that lets the scientist to analyze several microscopy images in one interactive 3D screen. This feature helps researcher to compare changes in sample in real time. We also propose to use interactive 3D measurement tools for reading back essential data details such as intersection plots, volumes and distances in measured data.
Scanning Probe Microscopy data courtesy Prof. Gleb Finkelstein, Duke University Physics Department.
The images above correspond to of electrons as they move within a nearly
two-dimensional (flat) structure made of Ga, As, and Al atoms. In nature,
most electrons exist as parts of atoms; in this image, they are flowing
free in a low-temperature electron gas. A strong magnetic field created
the flowing pattern, a result of the quantum Hall effect. A scanned probe
microscope, a research tool that can observe and manipulate objects down
to the scale of a single atom, took the images.
Prof.
Gleb Finkelstein publication:
Topographic Mapping of the Quantum Hall Liquid Using a Few-Electron Bubble
G. Finkelstein, 1 P. I. Glicofridis, 1 R. C. Ashoori, 1 M. Shayegan 2
, Science 289, 90-94. (2000).
A scanning
probe technique was used to obtain a high-resolution map of the random
electrostatic potential inside the quantum Hall liquid. A sharp metal
tip, scanned above a semiconductor surface, sensed charges in an embedded
two-dimensional (2D) electron gas. Under quantum Hall effect conditions,
applying a positive voltage to the tip locally enhanced the 2D electron
density and created a "bubble" of electrons in an otherwise
unoccupied Landau level. As the tip scanned along the sample surface,
the bubble followed underneath. The tip sensed the motions of single electrons
entering or leaving the bubble in response to changes in the local 2D
electrostatic potential.
Prof.
Gleb Finkelstein report at the ITP, UCSB:
Single-Electron Topography of the Quantum Hall Liquid Using a Mobile Quantum
Dot
Gleb Finkelstein, MIT
While scanning a sharp metal tip just above the surface of a semiconductor we sense the motion of single electrons within a two-dimensional electron gas buried about 100 nm below. We use the scanning tip to create an electron droplet by locally "gating" the electron gas to accumulate electrons. In the quantum Hall regime an incompressible strip with integer filling surrounds the droplet and leads to a charge quantization. We move the tip across the sample and drag the resulting quantum dot underneath the tip. We monitor the the Coulomb blockade pattern as single electrons enter or leave the quantum dot according to the changes in the local electrostatic potential. This allows us to measure the random electrostatic potential directly as it is seen by the electrons inside the semiconductor.