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- Ardavan F. Oskooi, David Roundy, Mihai Ibanescu, Peter Bermel, John D. Joannopoulos, Steven G. Johnson
- Computer Physics Communications
- 2010

This paper describes Meep, a popular free implementation of the finite-di fference time-domain (FDTD) method for simulating electromagnetism. In particu lar, we focus on aspects of implementing a… (More)

- Vera Sazonova, Yuval Yaish, Hande Üstünel, David Roundy, T. A. Arias, Paul L. McEuen
- Nature
- 2004

Nanoelectromechanical systems (NEMS) hold promise for a number of scientific and technological applications. In particular, NEMS oscillators have been proposed for use in ultrasensitive mass… (More)

- Ardavan Farjadpour, David Roundy, +5 authors Geoffrey W. Burr
- Optics letters
- 2006

Finite-difference time-domain (FDTD) methods suffer from reduced accuracy when modeling discontinuous dielectric materials, due to the inhererent discretization (pixelization). We show that accuracy… (More)

- David Roundy
- Haskell
- 2005

A common reaction from people who hear about darcs, the source control system I created, is that it sounds like a great tool, but it is a shame that it is written in Haskell. People think that… (More)

- Hyoung Joon Choi, David Roundy, Hong Sun, Marvin L. Cohen, Steven G. Louie
- Nature
- 2002

Magnesium diboride differs from ordinary metallic superconductors in several important ways, including the failure of conventional models to predict accurately its unusually high transition… (More)

- Hande Ustünel, David Roundy, T. A. Arias
- Nano letters
- 2005

We present a general study of oscillations in suspended one-dimensional elastic systems clamped at each end, exploring a wide range of slack (excess length) and downward external forces. Our results… (More)

We present the results of a series of model Monte Carlo calculations of the scattering of spin-polarized electrons from gold foil targets. Our calculations examine the behavior of the left-right… (More)

- Ardavan Farjadpour, David Roundy, +4 authors Steven G. Johnson
- 2006

Finite-difference time-domain (FDTD) methods suffer from reduced accuracy when modeling discontinuous dielectric materials, due to the inhererent discretization (“pixellization”). We show that… (More)

- Mihai Ibanescu, Steven G. Johnson, David Roundy, C. Luo, Yoel. Fink, John D. Joannopoulos
- Physical review letters
- 2004

We show that modes of axially uniform waveguides of arbitrary cross section can be made to have anomalous dispersion relations resulting from strong repulsion between two modes. When the axial wave… (More)

- Mihai Ibanescu, Steven G. Johnson, David Roundy, Yoel. Fink, John D. Joannopoulos
- Optics letters
- 2005

We propose and demonstrate a mechanism for small-modal-volume high-Q cavities based on an anomalous uniform waveguide mode that has zero group velocity at a nonzero wave vector. In a short piece of a… (More)