|
|
|
|
| LEADER |
01880 am a22002653u 4500 |
| 001 |
72491 |
| 042 |
|
|
|a dc
|
| 100 |
1 |
0 |
|a Joannopoulos, John D.
|e author
|
| 100 |
1 |
0 |
|a Massachusetts Institute of Technology. Department of Physics
|e contributor
|
| 100 |
1 |
0 |
|a Johnson, Steven G.
|e contributor
|
| 100 |
1 |
0 |
|a Joannopoulos, John D.
|e contributor
|
| 100 |
1 |
0 |
|a McCauley, Alexander Patrick
|e contributor
|
| 700 |
1 |
0 |
|a McCauley, Alexander Patrick
|e author
|
| 700 |
1 |
0 |
|a Hashemi, Hila
|e author
|
| 700 |
1 |
0 |
|a Johnson, Steven G.
|e author
|
| 700 |
1 |
0 |
|a Qui, Cheng-Wei
|e author
|
| 245 |
0 |
0 |
|a Diameter-bandwidth product limitation of isolated-object cloaking
|
| 260 |
|
|
|b American Physical Society,
|c 2012-08-31T14:55:10Z.
|
| 856 |
|
|
|z Get fulltext
|u http://hdl.handle.net/1721.1/72491
|
| 520 |
|
|
|a We show that cloaking of isolated objects using transformation-based cloaks is subject to a diameter-bandwidth product limitation: as the size of the object increases, the bandwidth of good (small-cross-section) cloaking decreases inversely with the diameter, as a consequence of causality constraints even for perfect fabrication and materials with negligible absorption. This generalizes a previous result that perfect cloaking of isolated objects over a nonzero bandwidth violates causality. Furthermore, we demonstrate broader causality-based scaling limitations on any bandwidth-averaged cloaking cross section, using complex analysis and the optical theorem to transform the frequency-averaged problem into a single-scattering problem with transformed materials.
|
| 520 |
|
|
|a United States. Army Research Office. Institute for Soldier Nanotechnologies (contract no. W911NF-07-D-0004)
|
| 520 |
|
|
|a United States. Air Force Office of Scientific Research. Multidisciplinary University Research Initiative (grant no. FA9550-09-1-0704)
|
| 546 |
|
|
|a en_US
|
| 655 |
7 |
|
|a Article
|
| 773 |
|
|
|t Physical Review A
|
