Search results
Results from the WOW.Com Content Network
Choice chemistry is typically gold-coated tip and surface with R−SH thiols attached, R being the functional groups of interest. CFM enables the ability to determine the chemical nature of surfaces, irrespective of their specific morphology, and facilitates studies of basic chemical bonding enthalpy and surface energy.
Microscopy is a category of characterization techniques which probe and map the surface and sub-surface structure of a material. These techniques can use photons, electrons, ions or physical cantilever probes to gather data about a sample's structure on a range of length scales. Some common examples of microscopy techniques include: Optical ...
A list of chemical analysis methods with acronyms. A. Atomic absorption ... Electron microscopy; Electron paramagnetic resonance ... Analytical chemistry;
X-ray microscopy is three-dimensional and non-destructive, allowing for repeated imaging of the same sample for in situ or 4D studies, and providing the ability to "see inside" the sample being studied before sacrificing it to higher resolution techniques. A 3D X-ray microscope uses the technique of computed tomography , rotating the sample 360 ...
Energy-dispersive X-ray spectroscopy (EDS, EDX, EDXS or XEDS), sometimes called energy dispersive X-ray analysis (EDXA or EDAX) or energy dispersive X-ray microanalysis (EDXMA), is an analytical technique used for the elemental analysis or chemical characterization of a sample. It relies on an interaction of some source of X-ray excitation and ...
PEEM – Photoemission electron microscopy (or photoelectron emission microscopy) PES – Photoelectron spectroscopy; PINEM – photon-induced near-field electron microscopy; PIGE – Particle (or proton) induced gamma-ray spectroscopy, see nuclear reaction analysis; PIXE – Particle (or proton) induced X-ray spectroscopy; PL – Photoluminescence
For example, while the nominal binding energy of the C 1s electron is 284.6 eV, subtle but reproducible shifts in the actual binding energy, the so-called chemical shift (analogous to NMR spectroscopy), provide the chemical state information. [citation needed] Chemical-state analysis is widely used for carbon.
Although modern analytical chemistry is dominated by sophisticated instrumentation, the roots of analytical chemistry and some of the principles used in modern instruments are from traditional techniques, many of which are still used today. These techniques also tend to form the backbone of most undergraduate analytical chemistry educational labs.