Rigaku Americas Corp. of The Woodlands, Texas, announced today that Wes Hardenburg, its CFO since 2000, has been promoted to serve as its president and CEO. Hardenburg succeeds Paul Swepston, PhD, who will continue on as senior advisor to the CEO of parent company Rigaku Corp. in Tokyo. Hardenburg joined Rigaku through the acquisition of Osmic Inc. in 1999. Rigaku makes analytical and industrial instrumentation used in small molecule and protein crystallography, x-ray spectrometry and diffraction, x-ray optics, and semiconductor metrology.