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Limits of Visual Detection for Finasteride Polymorphs in Prepared Binary Mixtures: Analysis by X-ray Powder Diffraction
(Wiley-Blackwell, 2014-11-01)
Finasteride (FNT) is a drug that inhibits human enzyme type II 5-reductase that metabolizes testosterone into dihydrotestosterone. There are two enantiotropic polymorphs with known crystal structure: designated as forms I ...
Abruptly autofocusing beams from phase perturbations having forced symmetry
(Optical Society of America, 2019-08)
A controllable manipulation of the energy distribution of caustic beams possessing rectangular symmetry is presented. The beams are designed from the spectral phase by adding a linear and/or quadratic perturbation having ...
Tailoring a sub-diffraction optical focus via a straightforward interferometric approach
(IOP Publishing, 2021-06-02)
An approach for yielding light focuses below Abbe´s diffraction limit in Gaussian beams is presented. The method uses only standard passive optical elements as lenses, filters and mirrors and consists of a Michelson ...