Third- and second-harmonic generation microscopy of individual metal nanocones using cylindrical vector beams.

We demonstrate third- (THG) and second-harmonic generation (SHG) microscopy of individual silver nanocones using tightly focused cylindrical vector beams (CVBs). Although THG is expected to be a weaker process than SHG, the yield for THG with radial polarization was higher than for SHG. We also found an excellent correlation between the imaging properties of THG and SHG, suggesting that both are governed by the same overall features of the individual nanocone.

Information utilization in tactical decision making of middle management health managers.

Healthcare is an information-intensive field, as information is needed to make strategic, tactical, and operational decisions. The purpose of this study was to identify the tactical decisions that middle management healthcare managers make, the information that is available, and the necessary information that is missing using the cardiac care process as an example. Data were collected through focused interviews of nurses and physicians who work in middle management in a secondary healthcare field.

Second-harmonic generation imaging of metal nano-objects with cylindrical vector beams.

We introduce an imaging technique based on second-harmonic generation with cylindrical vector beams that is extremely sensitive to three-dimensional orientation and nanoscale morphology of metal nano-objects. Our experiments and second-harmonic field calculations based on frequency-domain boundary element method are in very good agreement. The technique provides contrast for structural features that cannot be resolved by linear techniques or conventional states of polarization and shows great potential for simple and cost-effective far-field optical imaging in plasmonics.

Critical incidents and important information in the care processes of patients with cardiac symptoms.

Aim: To describe important information in the care processes of patients with cardiac symptoms.

Background: Process-based work-flow models are increasingly being used in healthcare. At the same time, developments in information systems offer the possibility of supporting improvements in process and information management in healthcare.

Tip-enhanced Raman scattering from bridged nanocones.

We present two silver nanocones separated by 450 nm, well beyond the typical gap spacing of coupled nanoantennas, and connected by a metal bridge to facilitate plasmonic coupling between them. The tip-enhanced Raman scattering from crystal violet molecules is found to be almost an order of magnitude higher from the bridged cones than from individual cones. This result is supported by local-field calculations of the two types of structures.

Broadband infrared mirror using guided-mode resonance in a subwavelength germanium grating.

We demonstrate a broadband mirror for the IR wavelength region comprising a subwavelength grating made of germanium. We design and optimize the guided-mode resonances in the structure for TM-polarized incident light by rigorous electromagnetic simulations. The grating structure is realized by nanoimprint lithography and dry etching.

Nanoimprint fabrication of gold nanocones with approximately 10 nm tips for enhanced optical interactions.

We show that nanoimprint lithography combined with electron-beam evaporation provides a cost-efficient, rapid, and reproducible method to fabricate conical nanostructures with very sharp tips on flat surfaces in high volumes. We demonstrate the method by preparing a wafer-scale array of gold nanocones with an average tip radius of 5 nm. Strong local fields at the tips enhance the second-harmonic generation by over 2 orders of magnitude compared with a nonsharp reference.