Atom probe tomography provides 3d atombyatom imaging of materials with a uniquely powerful combination of spatial and chemical resolution it takes tiny grains of the mineral approximately 1000 th the width of a human hair and energises atoms one at a time using a laser.
Using atom probe tomography to map the distribution of lead isotopes within a zircon crystal only 400 micron in size professor john valley from the university of wisconsinmadison and colleagues determined the crystal formed 44 billion years ago.
atom probe tomography apt leap 4000 used in dating 44 billion year old zircon dr john valley a professor of geoscience at the trace elements and monazite dating at ultimate lateral resolution sample courtesy of dr mj jercinovic umass usa and dr.
Atomicscale analysis of carbon partitioning between martensite and austenite by atom probe tomography and correlative transmission electron microscopy carbon partitioning is investigated by means of atom probe tomography and correlative transmission electron microscopy a model steel fe059 wt c 27 at.
The imaging atomprobe moniker was coined by a j waugh in 1978 and the instrument was described in detail by j a panitz in the same year atom probe tomography apt modern day atom probe tomography apt uses a positionsensitive detector to deduce the lateral location of atoms.