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Standardisation versus creativity – combining theories
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Se Upp med Inflationen Ingves!
Band-gap engineering in III-V nanowires
Upgrading in Asian clusters: Rethinking the importance of interactive-learning
The stranger who lives next door. Jewish-Christian relations in Germany during the High Middle Ages
Blood plasma peptide profiling by equalizing and multiplex complementary SPE using the microfluidic ISET platform
Pediatric cardiac output measurement using surface integration of velocity vectors: An invivo validation study
Impoverishment as feature deletion: Dual and plural agreement in Sámi
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Physical bounds and sum rules for high-impedance surfaces
High-impedance surfaces are artificial surfaces synthesized from periodic structures. The high impedance is useful as it does not short circuit electric currents and reflects electric fields without phase shift. Here, a sum rule is presented that relates frequency intervals having high impedance with the thickness of the structure. The sum rule is used to derive physical bounds on the bandwidth fo