Publications (14)
An Electrically Injected and Solid State Surface Acoustic Wave Phonon Laser
Alexander Wendt, Matthew J. Storey, Michael Miller +6
Surface acoustic waves (SAWs) enable a wide array of technologies including RF filters, chemical and biological sensors, acousto-optic devices, acoustic control of microfluidic flo…
Sequential Ensembling for Semantic Segmentation
Rawal Khirodkar, Brandon Smith, Siddhartha Chandra +2
Ensemble approaches for deep-learning-based semantic segmentation remain insufficiently explored despite the proliferation of competitive benchmarks and downstream applications. In…
Towards a monolithic platform for coupling superconducting circuits to low-loss microwave phonons in AlScN on 4H-SiC
Yuanchen Deng, William W. Roberts, Sueli Skinner-Ramos +12
The paper presents a monolithic platform that integrates aluminum superconducting microwave resonators on silicon carbide with piezoelectric AlScN layers to enable low‑loss microwa…
A Physically Driven Long Short Term Memory Model for Estimating Snow Water Equivalent over the Continental United States
Arun M. Saranathan, Mahmoud Saeedimoghaddam, Brandon Smith +3
Snow is an essential input for various land surface models. Seasonal snow estimates are available as snow water equivalent (SWE) from process-based reanalysis products or locally f…
Balancing the Picture: Debiasing Vision-Language Datasets with Synthetic Contrast Sets
Brandon Smith, Miguel Farinha, Siobhan Mackenzie Hall +3
Vision-language models are growing in popularity and public visibility to generate, edit, and caption images at scale; but their outputs can perpetuate and amplify societal biases…
Design of optomechanical transducers for sub-micron resolution ultrasound imaging
Lisa Hackett, Chang Ge, Alex Miera +2
Ultrasound is a noninvasive, real-time, and therefore widely used imaging modality; yet its application in cellular and sub-cellular biology is significantly limited by rapidly inc…
S-band acoustoelectric amplifier utilizing an ultra-high thermal conductivity heterostructure for low self-heating
Lisa Hackett, Xingyu Du, Michael Miller +9
Here we report on an acoustoelectric slab waveguide heterostructure for phonon amplification using a thin AlScN film grown directly on a 4H-SiC substrate with an…
Effects of hot phonons and thermal stress in micro-Raman spectra of molybdenum disulphide
Peter Sokalski, Zherui Han, Gabriella Coloyan Fleming +5
Micro-Raman spectroscopy has become an important tool in probing thermophysical behavior in emerging functional materials such as two-dimensional (2D) layered structures. Localized…
A Comprehensive Analysis of Large Language Model Outputs: Similarity, Diversity, and Bias
Brandon Smith, Mohamed Reda Bouadjenek, Tahsin Alamgir Kheya +2
Large Language Models (LLMs) represent a major step toward artificial general intelligence, significantly advancing our ability to interact with technology. While LLMs perform well…
High-Efficiency Three-Wave and Four-Wave Phonon Mixing Via Electron-Mediated Nonlinearity in Semiconductor-Piezoelectric Heterostructures
Lisa Hackett, Matthew Koppa, Brandon Smith +7
We show that phononic frequency conversion can be enhanced by orders of magnitude in piezoelectric systems by heterogeneous integration of high-mobility semiconductor films. A lith…
A Simple Strategy for Body Estimation from Partial-View Images
Yafei Mao, Xuelu Li, Brandon Smith +2
Virtual try-on and product personalization have become increasingly important in modern online shopping, highlighting the need for accurate body measurement estimation. Although pr…
Auditing Black-box Models for Indirect Influence
Philip Adler, Casey Falk, Sorelle A. Friedler +4
Data-trained predictive models see widespread use, but for the most part they are used as black boxes which output a prediction or score. It is therefore hard to acquire a deeper u…
Strongly Electromechanical Coupled Phononic Waveguides in Aluminum Scandium Nitride on Silicon Carbide
Yuanchen Deng, Dalton Anderson, Xingyu Du +6
Guided phonons have become an increasingly important platform for classical and quantum information processing. While conventional surface acoustic wave systems are typically only…
SplatArmor: Articulated Gaussian splatting for animatable humans from monocular RGB videos
Rohit Jena, Ganesh Subramanian Iyer, Siddharth Choudhary +3
We propose SplatArmor, a novel approach for recovering detailed and animatable human models by `armoring' a parameterized body model with 3D Gaussians. Our approach represents the…