This paper showed that silicon nanowires fabricated through metal-assisted chemical etching can be characterized using FTIR spectroscopy. Crucially, we show that effective medium models allow us to predict the density of nanowire filling and detect nanometer-thick coatings of oxides. This could act as a versatile platform for infrared spectroscopy.

Showing our Hawkeye spirit through microfabrication!

In this paper, we uncover how the properties of SPhP modes offer some challenges for surface-enhanced sensors. To do so we develop numerical models for understanding both the lifetime and frequency of resonances in silicon carbide resonators. Our results reveal a comparatively narrow range in the center of the Reststrahlen band offers the best candidate spectral range for enhanced sensing.

Congratulations to Sid, who graduated with honors on research performed in our lab.

In this program we will understand the properties of defects and dopants in vertical GaN power electronics

In this project PI Folland will determine how certain classes of crystals can be used to control both direction, and orientation of light waves.

This past wednesday both Tristan and Sid presented at the University of Iowa Spring Undergraduate Research Festival, on their work which is being performed as part of their shared ICRU fellowship. Congratulations on a great presentation!

Publication reviews the possibilities for low symmetry materials for next generation nanophotonics.

Here we discuss how a new generation of infrared optoelectronics could be realized leveraging surface phonon polaritons.

Shear phenomena in the infrared dielectric response of a monoclinic crystal are shown to unveil a new polariton class termed hyperbolic shear polariton that can emerge in any low-symmetry monoclinic or triclinic system