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83 posts tagged applied physics
In this micrograph, the spherical Ag droplet (about 5 microns in diameter) is almost detached from the SiO2 base, yet it is in the clothing of a thin SiO2 layer.
Credit: Prof. Dr. Z. X. Cao
Source: Physics is Fun, Physics is Art; Prof. Dr. Ming-Wei Wu, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China.
Source: Histological Protocol, Research and training in Skeletal Biology, UConn Health Center, University of Connecticut.
Field Ionisation (FI) and Field Desorption (FD) were pioneered by H D Beckey in the late 1960’s as ionisation techniques that offered significant advantages over then current methods. The heart of the system is an emitter that has dendrites (cf conifers/evergreens) on it which have extremely small radii on their tips. These dendrites allow very high electric field strengths to be applied to a molecule.
Source: Liquid Introduction Field Desorption Ionisation, University of Delaware.
Photograph of the amplifier chip, attached to a circuit board with thin gold wirebonds.
Credit: Columbia Engineering
Source: Penn Works With Columbia Engineers to Increase Speed of Single-molecule Measurements, University of Pennsylvania.
A 285 µm Formula 1 racecar, printed at the Vienna University of Technology.
Printing three dimensional objects with incredibly fine details is now possible using “two-photon lithography”. With this technology, tiny structures on a nanometer scale can be fabricated.
Source: 3D-Printer with Nano-Precision, Vienna University of Technology
A new fiber developed by Yoel Fink’s group emits blue laser light only at a precisely controlled location.
Credit: Greg Hren