Rottmann Research Group


Our group is part of the Chemical and Materials Engineering department at the University of Kentucky. Our research primarily focuses on developing and utilizing techniques to better understand metallic materials and metal fabrication techniques. Areas of current focus include:

  • Thin film deposition and characterization of refractory multi-principal element alloys
  • Understanding the influence of build geometry on the properties and microstructure of additively manufactured Inconel 718
  • Additively manufacturing aluminum and iron alloys with applied magnetic field
  • Improving the performance of refractory cold spray coatings

We typically approach problems with a combined approach that spans from fabrication to characterization. Depending on the material and problem, mechanical tests are either performed ex situ in our custom built mechanical testing setup or in situ using a scanning electron microscope using our FemtoTools micromechanical testing platform. Our group also regularly uses the broad array of characterization equipment available at the UK Electron Microscopy Center. We strive to measure the performance and properties of materials guided by a fundamental understanding of the mechanisms that govern them. Members of our group become proficient in a wide range of characterization techniques and develop the conceptual expertise necessary to leverage those techniques to address problems at the forefront of materials research. 


Paper written by Connor, Tylee, and Imran published in Materialia

"Quantifying the Microstructure and Mechanical Property Differences between Bulk and Thin-wall Additively Manufactured Inconel 718" was just published in the journal Materialia. The manuscript was primarily written by Connor Varney, but both Tylee and Imran contributed significantly toward generating and analyzing the data presented in it. Great work!

You can find the paper here.  

Alewi and Connor Present at TMS 2023

Alewi and Connor traveled to San Diego, CA to present their research. Connor gave two talks on his mechanical characterization of thin walled Inconel 718 and presented a poster on Nic's research. Alewi presented a poster detailing his microstructural characterization of a hot-rolled 7075 aluminum alloy.

Nic presented a paper at AIAA 2023

Nic presented a paper titled "Quantification of Directionally Dependent Mechanical Properties and Damage Tolerance of FiberForm" at the 2023 AIAA meeting.