What did I learn in school today?

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Presentation transcript:

What did I learn in school today? 复习 What did I learn in school today?

Must-know terms Crystallography symmetry operation - translation, rotation lattice, Bravais lattice unit cell crystal system point group, space group stereographic projection equipoint lattice plane, lattice direction

Must-know terms X-rays continuous radiation characteristic radiation synchrotron radiation mass attenuation coefficient absorption edge fluorescence

Must-know terms Diffraction Braggs' law reciprocal lattice Ewald construction Debye rings

Must-know terms Powder diffractometer focusing Soller slit divergence slit receiving slit monochromator detector deadtime

Must-know terms Powder diffraction patterns indexing extinction rule atomic scattering factor structure factor intensity multiplicity Lorentz polarization temperature factor peak breadth

Must-know terms Powder diffraction procedures diffractometer alignment calibration standards specimen displacement preferred orientation front fill, back fill, side drift zero background plate step size dwell time

Must-know terms Powder diffraction applications PDF Hanawalt search method quantitative analysis crystallite size microstrain Scherrer equation Williamson-Hall method

Must-know terms SEM microstructure matrix and precipitates backscattered electrons composition contrast secondary electrons topographic contrast depth of focus Wehnelt cup tunneling and field emission interaction volume

Must-know terms TEM back focal plane jet thinning ion milling camera constant relrods bright field dark field lattice imaging diffraction contrast

Must-know terms Optical microscopy index of refraction numerical aperture depth of field depth of focus etching

Must-know terms AFM contact and non-contact modes constant height constant force tapping mode force-distance plot