5 papers
Analytical framework for interpreting thermoreflectance measurements of nanoline gratings under finite spot illumination
Abhishek Pathak, Seungwon Park, Shubham Deshmukh +2
A frequency-domain thermoreflectance (FDTR)-based technique is presented to measure the effective thermal properties of a material stack whose surface is patterned with metallic na…
Direct Summation of the Madelung Constant Using Axial Multipoles
Joven V. Calara, Jan D. Miller
We present an absolutely convergent real-space summation method for electrostatic potentials in ionic lattices. The method constructs the lattice from translated axial multipole un…
First experimental study of multiple orientation muon tomography, with image optimization in sparse data environments
Jesus J. Valencia, Adam A. Hecht, C. L. Morris +4
Due to the high penetrating power of cosmic ray muons, they can be used to probe very thick and dense objects. As charged particles, they can be tracked by ionization detectors, de…
Enhancing Space Situational Awareness to Mitigate Risk: A Single-Case Study in the Misidentification of a Recently-Launched Starlink Satellite Train as a UAP in Commercial Aviation
Douglas J. Buettner, Richard E. Griffiths, Nick Snell +1
Over the past several years, the misidentification of SpaceX Starlink satellites as Unidentified Aerial Phenomena (UAP) by pilots and laypersons has generated unnecessary aviation…
Scaling down an insect-size microrobot, HAMR-VI into HAMR-Jr
Kaushik Jayaram, Jennifer Shum, Samantha Castellanos +2
Here we present HAMR-Jr, a \SI{22.5}{\milli\meter}, \SI{320}{\milli\gram} quadrupedal microrobot. With eight independently actuated degrees of freedom, HAMR-Jr is, to our knowledge…