4 papers
CLUSTER: Derivative-free optimization of smooth functions with parameter-change costs
Serena Landers, Sahil Pontula, Shiekh Zia Uddin +3
We introduce the CLUSTER algorithm (\textbf{c}oordinate-\textbf{l}evel \textbf{u}pdate \textbf{s}trategy for \textbf{t}rust-region step \textbf{e}valuation \textbf{r}efinement) for…
Inverse design of multiresonance filters via quasi-normal mode theory
Mo Chen, Steven G. Johnson, Aristeidis Karalis
We present a practical methodology for inverse design of compact high-order/multiresonance filters in linear passive 2-port wave-scattering systems, targeting any desired transmiss…
Unifying and accelerating level-set and density-based topology optimization by subpixel-smoothed projection
Alec M. Hammond, Ardavan Oskooi, Ian M. Hammond +3
We introduce a new "subpixel-smoothed projection" (SSP) formulation for differentiable binarization in topology optimization (TopOpt) as a drop-in replacement for previous projecti…
Inverse design of 3D-printable metalenses with complementary dispersion for terahertz imaging
Mo Chen, Ka Fai Chan, Alec M. Hammond +2
This study formulates a volumetric inverse-design methodology to generate a pair of complementary focusing metalenses for terahertz imaging: the two lenses exhibit equal and opposi…