@misc{WilsonHerrmannGutscheetal., author = {Wilson, Jon and Herrmann, Sven and Gutsche, Philipp and Burger, Sven and McPeak, Kevin}, title = {The Chiral Coefficient: Rapid Optimization of Broadband Plasmonic Chirality}, series = {2016 MRS Fall Meeting \& Exhibit}, journal = {2016 MRS Fall Meeting \& Exhibit}, language = {en} } @article{McPeakvanEngersBianchietal., author = {McPeak, Kevin and van Engers, Christian D. and Bianchi, Sarah and Rossinelli, Aurelio and Poulikakos, Lisa and Bernard, Laetitia and Herrmann, Sven and Kim, David K. and Burger, Sven and Blome, Mark and Jayanti, Sriharsha V. and Norris, David}, title = {Ultraviolet Plasmonic Chirality from Colloidal Aluminum Nanoparticles Exhibiting Charge-Selective Protein Detection}, series = {Adv. Mater.}, volume = {27}, journal = {Adv. Mater.}, doi = {10.1002/adma.201503493}, pages = {6244}, language = {en} } @article{WilsonGutscheHerrmannetal., author = {Wilson, Jon and Gutsche, Philipp and Herrmann, Sven and Burger, Sven and McPeak, Kevin}, title = {Correlation of circular differential optical absorption with geometric chirality in plasmonic meta-atoms}, series = {Opt. Express}, volume = {27}, journal = {Opt. Express}, doi = {10.1364/OE.27.005097}, pages = {5097}, language = {en} } @article{BlomeMcPeakBurgeretal.2014, author = {Blome, Mark and McPeak, Kevin and Burger, Sven and Schmidt, Frank and Norris, David}, title = {Back-reflector design in thin-film silicon solar cells by rigorous 3D light propagation modeling}, series = {COMPEL: Int. J. Comput. Mathem. Electr. Electron. Eng.}, volume = {33}, journal = {COMPEL: Int. J. Comput. Mathem. Electr. Electron. Eng.}, number = {4}, doi = {10.1108/COMPEL-12-2012-0367}, pages = {1282 -- 1295}, year = {2014}, language = {en} } @article{PoulikakosGutscheMcPeaketal., author = {Poulikakos, Lisa and Gutsche, Philipp and McPeak, Kevin and Burger, Sven and Niegemann, Jens and Hafner, Christian and Norris, David}, title = {The Optical Chirality Flux as a Useful Far-Field Probe of Chiral Near Fields}, series = {ACS Photonics}, volume = {3}, journal = {ACS Photonics}, doi = {10.1021/acsphotonics.6b00201}, pages = {1619}, language = {en} } @article{McPeakvanEngersBlomeetal., author = {McPeak, Kevin and van Engers, Christian D. and Blome, Mark and Park, Jong Hyuk and Burger, Sven and Gosalvez, Miguel A. and Faridi, Ava and Ries, Yasmina and Sahu, Ayaskanta and Norris, David}, title = {Complex Chiral Colloids and Surfaces via High-Index Off-Cut Silicon}, series = {Nano Lett.}, volume = {14}, journal = {Nano Lett.}, number = {5}, doi = {10.1021/nl501032j}, pages = {2934 -- 2940}, language = {en} } @inproceedings{PoulikakosGutscheMcPeaketal., author = {Poulikakos, Lisa and Gutsche, Philipp and McPeak, Kevin and Burger, Sven and Niegemann, Jens and Hafner, Christian and Norris, David}, title = {A Far-Field Interpretation of Optical Chirality in Analogy to Poynting's Theorem}, series = {META '15 Proceedings}, booktitle = {META '15 Proceedings}, pages = {1215 -- 1216}, abstract = {The optical chirality density is a valuable tool in locally characterizing chiral electromagnetic near-fields. However, how this quantity could translate into the far-field is not well understood. Here, we formulate a far-field interpretation of optical chirality by investigating its conservation law in isotropic media in analogy to Poynting's Theorem. We define the global chirality and find that lossy materials, in particular plasmonic nanostructures, can act as chirality generators. This can enable chiral sensing applications at the single molecule level.}, language = {en} } @misc{PoulikakosGutscheMcPeaketal., author = {Poulikakos, Lisa and Gutsche, Philipp and McPeak, Kevin and Burger, Sven and Niegemann, Jens and Hafner, Christian and Norris, David}, title = {A Far-Field Interpretation of the Optical Chirality}, series = {Frontiers in Nanophotonics (Congressi Stefano Franscini)}, journal = {Frontiers in Nanophotonics (Congressi Stefano Franscini)}, abstract = {A chiral structure is not super-imposable with its mirror image. Most commonly found in organic molecules, chirality can also occur in other systems, such as electromagnetic fields, where circularly polarized light is the most widespread example. Chiral electromagnetic fields can be a useful tool for biosensing applications. In particular, it has been shown that chiral plasmonic nanostructures have the ability to produce strongly enhanced chiral near-fields. Recently, our group has developed chiral plasmonic nanopyramids, which have the ability to focus chiral near-fields at their tip. This could enable chiral sensing at the single-molecule level. Chiral near-fields can be characterized in terms of the "optical chirality density". This time-even and parity-odd pseudoscalar was first derived by Lipkin and was found to follow a conservation law analogous to the energy conservation of electromagnetic fields. More recently, Tang and Cohen identified the physical meaning of the "optical chirality density" as the degree of asymmetry in the excitation rate of a chiral molecule. However, how this near-field interpretation of the optical chirality could translate into the far-field is not well understood. Here, we formulate a far-field interpretation by investigating the conservation law for optical chirality in matter, and performing time-averaging in analogy to Poynting's Theorem. In parallel to extinction energy, we define the "global chirality" as the sum of chirality dissipation within a material and the chirality flux leaving the system. With finite-element simulations, we place a dipole source at locations of enhanced local chirality and investigate the global chirality and ellipticity of emitted light in the far-field. Interestingly, we find that lossy materials with a complex dielectric function have the ability to generate global chirality when excited by achiral light. In particular, chiral plasmonic nanostructures are found to act as effective global chirality generators. The global interpretation of optical chirality provides a useful tool for biosensing applications with chiral plasmonic nanostructures, where the detection is routinely performed in the far-field.}, language = {en} } @article{GutscheSantiagoSchneideretal., author = {Gutsche, Philipp and Santiago, Xavier Garcia and Schneider, Philipp-Immanuel and McPeak, Kevin and Nieto-Vesperinas, Manuel and Burger, Sven}, title = {Role of Geometric Shape in Chiral Optics}, series = {Symmetry}, volume = {12}, journal = {Symmetry}, doi = {10.3390/sym12010158}, pages = {158}, language = {en} }