Linked Life Data

18999712

Source:http://linkedlifedata.com/resource/pubmed/id/18999712

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
16
pubmed:dateCreated
2008-11-12
pubmed:abstractText
Using the principle of causality as expressed in the Kramers-Kronig relations, we derive a generalized criterion for a negative refractive index that admits imperfect transparency at an observation frequency omega. It also allows us to relate the global properties of the loss (i.e., its frequency response) to its local behavior at omega. However, causality-based criteria rely on the group velocity, not the Poynting vector. Since the two are not equivalent, we provide some simple examples to compare the two criteria.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Oct
pubmed:issn
0031-9007
pubmed:author
pubmed:issnType
Print
pubmed:day
17
pubmed:volume
101
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
167401
pubmed:year
2008
pubmed:articleTitle
Causality-based criteria for a negative refractive index must be used with care.
pubmed:affiliation
Blackett Laboratory, Imperial College, Prince Consort Road, London, United Kingdom. Dr.Paul.Kinsler@physics.org
pubmed:publicationType
Journal Article