News Category
Check out our Perspective paper on ACS Photonics!
Mar. 14, 2022—Take a look at the recent Perspective paper on ACS Photonics! We introduced the physics and theories of anisotropic polaritons, reviewed the recent progress, and moved on to a discussion of outstanding challenges and potentials in this field. This is a collaborative work with Prof. Thomas G. Folland at The University of Iowa, Jiahua Duan and Prof. Pablo...
Highlighting our collaborative Nature paper on electron spectroscopy and imaging of interface phonons!
Feb. 21, 2022—Take a look at the recent work from Joseph Matson of the Interdisciplinary Materials Science at Vanderbilt University within the Josh Caldwell group (Vanderbilt University Mechanical Engineering) and Deliang Bao (包德亮) and Andrew O’Hara within the group of Sokrates Pantelides (Vanderbilt Physics) that was published today in Nature (Springer Nature Group). The work employed electron beam methods to directly image and measure vibrational modes at...
Check out our SiC subarray work!
Dec. 29, 2021—Ending 2021 with our fresh ACS Nano paper! In this work, we exploit more complicated unit-cell structures to realize localized surface phonon polaritons (LSPhP) modes with additional degrees of design freedom. Our subarrays described here represent a modal design platform that offers the low-loss, subdiffractional confinement of light associated with LSPhPs, but expanding the precise...
Check out our phonon engineering of boron nitride!
Nov. 10, 2021—Our recent work on isotopically engineered boron nitride was just published in Journal of Materials Research! With isotopic engineering, the phonon frequencies as well phonon lifetimes can be modified. While the lighter atoms (10-B) shift the phonon frequencies to higher values, the heavier atoms (11-B) red-shifts the phonon frequency. As such, the phonon polaritons supported by hexagonal and...
Check out our new paper on hyperlens!
Oct. 21, 2021—Our recent work on hyperlens was just published in Nano Letters! With isotopically enriched hBN, the resolution of the system is increased significantly compared with the natural form. More importantly, to correlate the complicated hyperlens field with the objects underneath, we developed an algorithm to retrieve the convoluted images. The work is in collaboration with...
Check out our inverse design work on Tamm plasmon thermal emitters!
Oct. 21, 2021—Our recent work on inversely designed Tamm plasma polariton thermal emitters was just published in Nature Materials, and it is also on the research news of the School of Engineering! With stochastic gradient descent, we are able to inversely design the Tamm plasma devices with numerous changeable parameters within several minutes on a consumer-grade desktop. Additionally,...
Check out our superstructure grating work!
Apr. 8, 2021—Our recent superstructure grating work just published in Applied Physics Letters! We demonstrated multiple coherent emission modes at different combinations of frequency and angle, controlled by the superstructure design. These superstructure gratings can be used to tailor the thermal emission of polaritonic thermal emitters. We also suggest the coherence length can be used as an appropriate...
Our Advanced Materials work was highlighted on the Cover!
Mar. 31, 2021—Mingze’s work on frequency multiplexing was highlighted with the cover in the March 15th edition of Advanced Materials! It also received considerable mentions in the press: https://www.photonics.com/Articles/Waveguide_Design_Enables_Transmission_of_Two/a66763 https://phys.org/news/2021-03-photonics-discovery-portends-efficiencies-silicon.html Photonics discovery portends dramatic efficiencies in silicon chips
Check out our recent work on guided mid-and near-IR paper!
Mar. 4, 2021—Our recent work on guided mid- and near-IR light in a hybrid system just published in Advanced Materials, and it is also on the research news of the School of Engineering! With hyperbolic phonon polaritons supported by hexagonal boron nitride, the mid-IR light is confined to a small length scale, and guided along a silicon waveguide underneath...
Check out our recent work on thermal emission engineering!
Feb. 16, 2021—Our recent work on thermal emission engineering just published in Nano Letters. By leveraging three-oscillator strong coupling, the spectral and spatial dispersion of thermal emission can be engineered for a variety of IR applications. We demonstrated a five-fold improvement in the spatial coherence and a three-fold enhancement of the quality factor of the mixed polaritonic...