Two-dimensional imaging in hyperbolic media-the role of field components and ordinary waves.

Sci Rep

Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, NSW, 2006, Australia.

Published: December 2015

We study full vector imaging of two dimensional source fields through finite slabs of media with extreme anisotropy, such as hyperbolic media. For this, we adapt the exact transfer matrix method for uniaxial media to calculate the two dimensional transfer functions and point spread functions for arbitrary vector fields described in Cartesian coordinates. This is more convenient for imaging simulations than the use of the natural, propagation direction-dependent TE/TM basis, and clarifies which field components contribute to sub-diffraction imaging. We study the effect of ordinary waves on image quality, which previous one-dimensional approaches could not consider. Perfect sub-diffraction imaging can be achieved if longitudinal fields are measured, but in the more common case where field intensities or transverse fields are measured, ordinary waves cause artefacts. These become more prevalent when attempting to image large objects with high resolution. We discuss implications for curved hyperbolic imaging geometries such as hyperlenses.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4669508PMC
http://dx.doi.org/10.1038/srep17690DOI Listing

Publication Analysis

Top Keywords

ordinary waves
12
field components
8
sub-diffraction imaging
8
fields measured
8
imaging
5
two-dimensional imaging
4
imaging hyperbolic
4
hyperbolic media-the
4
media-the role
4
role field
4

Similar Publications

Objectives: This study aims to explore the relationship between the combined experiences of COVID-19 infection in individuals and their family members and the resulting fear of COVID-19, with a focus on the severity of symptoms and various sociodemographic factors.

Design: Longitudinal survey study.

Setting: The Japan COVID-19 and Society Internet Survey (JACSIS), a large-scale web panel survey administered in Japan.

View Article and Find Full Text PDF

This study aimed to investigate the effect of precarious employment (PE) on the mental health of Australians. Building on previous research, we conceptualised PE as a multidimensional construct, accounted for gender differences in the associations, and our modelling strategy addressed the possibility of reverse causality bias. Data was pooled panel data from 15 waves (2005-2019) of the HILDA survey (n = 14,237).

View Article and Find Full Text PDF

The restorative effect of natural environments on human well-being has garnered significant attention in psychology and environmental science. However, extraordinary nature-such as volcanoes, glaciers, and starry skies-has been largely underexplored despite its potential to elicit stronger emotional and physiological responses. Similarly, personality analysis has been somewhat overlooked in environmental psychology research.

View Article and Find Full Text PDF

Objectives: Working outside the workplace and ordinary work hours has become common for a larger part of the working population. The objective of the current study was to examine the relationship between working after-hours and employee burnout, musculoskeletal pain, detachment and work-home conflict, delineating the independent effect of four different types of after-hours work, and the moderating role of work-time control.

Methods: The data comprised longitudinal questionnaire data from 1465 full-time employees in Norway across four waves (2021-2022).

View Article and Find Full Text PDF

Leisure sedentary time and elevated blood pressure: evidence from the statutory retirement policy.

Front Public Health

November 2024

Jinhe Center for Economic Research, Xi'an Jiaotong University, Xi'an, Shaanxi, China.

Objectives: The relationship between sedentary behaviors and elevated blood pressure remains inconclusive, and the socioeconomic mechanisms underlying the linkage are rarely discussed. Since retirement is often associated with behavioral changes that impact health, this study aims to provide evidence on changes in leisure sedentary time after the statutory retirement age on elevated blood pressure, along with the socioeconomic mechanisms.

Methods: We utilized data from five waves (2004-2015) of the China Health and Nutrition Survey (CHNS), focusing on males aged 55-65 employed in the formal sector.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!