Michael Brupbacher’s article selected as an Editor’s Pick in Applied Optics

September 21, 2017

Fig. 3. Visible appearances of the (a) as-sprayed (off-white) and (b) monolithic (pink) Cr-doped aluminas indicate differences in optical absorption that may be correlated to changes in crystallographic structure upon heat treatment (1973 K, 4 h in air). SEM of the (a) mixed-phase (i.e., 𝛼α- and 𝜂η-alumina), as-sprayed Cr-doped alumina coating and the (d) Cr-doped 𝛼α-alumina monolith shows that grain growth, an emergence of crystal faceting and a generation of intragranular optical scatterers (pores), is associated with the transformation of 𝜂η-phase to the 𝛼α-alumina host.

Portions of Dr. Michael Brupbacher’s recently defended dissertation have been published in Applied Optics, a journal of the Optical Society of America. The article, titled “Temperature-dependent diffuse reflectance spectroscopy of plasma-sprayed Cr-doped α-alumina using supercontinuum laser illumination and CO2 laser heating“, was selected as an “Editor’s Pick” which connotates that the work in an excellent representation of the scientific research taking place in the field. Dr. Brupbacher’s work was a collaboration with the John’s Hopkins Applied Physics Laboratory and supported by a JHU APL Research Assistantship.

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