Targeted Sub-Attomole Cancer Biomarker Detection Based on Phase Singularity 2D Nanomaterial-Enhanced Plasmonic Biosensor [PDF]
Nano-Micro Letters, 2021 Highlights A zero-reflection-induced phase singularity is achieved through precisely controlling the resonance characteristics using two-dimensional nanomaterials. An atomically thin nano-layer having a high absorption coefficient is exploited to enhance
Yuye Wang +13 more
doaj +5 more sources
The influence of shot noise on the performance of phase singularity-based refractometric sensors [PDF]
NanophotonicsTopological singularities of optical response functions – such as reflection amplitudes – enable elegant practical applications ranging from analog signal processing to novel molecular sensing approaches.
Maslova Valeria +5 more
doaj +3 more sources
Standardizing Single-Frame Phase Singularity Identification Algorithms and Parameters in Phase Mapping During Human Atrial Fibrillation [PDF]
Frontiers in Physiology, 2020 PurposeRecent investigations failed to reproduce the positive rotor-guided ablation outcomes shown by initial studies for treating persistent atrial fibrillation (persAF).
Xin Li +13 more
doaj +3 more sources
Engineering phase and polarization singularity sheets [PDF]
Nature Communications, 2021 Metasurfaces allow for vast possibilities of light control. Here, the authors demonstrate on-demand engineering and realization of a broad family of two-dimensional phase singularity sheets and transverse polarization singularity sheets, opening up new ...
Soon Wei Daniel Lim +4 more
doaj +6 more sources
Highly Sensitive Plasmonic Biosensors with Precise Phase Singularity Coupling on the Metastructures. [PDF]
Biosensors (Basel), 2022 In this paper, we demonstrated the ability of a plasmonic metasensor to detect ultra-low refractive index changes (in the order of ∆n = 10−10 RIU), using an innovative phase-change material, vanadium dioxide (VO2), as the sensing layer.
Youssef J +6 more
europepmc +2 more sources
Wavelength and Fibrosis Affect Phase Singularity Locations During Atrial Fibrillation. [PDF]
Front Physiol, 2018 The mechanisms underlying atrial fibrillation (AF), the most common sustained cardiac rhythm disturbance, remain elusive. Atrial fibrosis plays an important role in the development of AF and rotor dynamics.
Saha M +6 more
europepmc +2 more sources
M/M/Infinity Birth-Death Processes – A Quantitative Representational Framework to Summarize and Explain Phase Singularity and Wavelet Dynamics in Atrial Fibrillation [PDF]
Frontiers in Physiology, 2021 RationaleA quantitative framework to summarize and explain the quasi-stationary population dynamics of unstable phase singularities (PS) and wavelets in human atrial fibrillation (AF) is at present lacking.
Dhani Dharmaprani +18 more
doaj +2 more sources
Phase singularity diffusion. [PDF]
Optics Letters, 2014 We follow the trajectories of phase singularities at nulls of intensity in the speckle pattern of waves transmitted through random media as the frequency of the incident radiation is scanned in microwave experiments and numerical simulations.
Xiaojun Cheng, Y. Lockerman, A. Genack
semanticscholar +5 more sources
A New Efficient Method for Detecting Phase Singularity in Cardiac Fibrillation. [PDF]
PLoS One, 2016 Background The point of phase singularity (PS) is considered to represent a spiral wave core or a rotor in cardiac fibrillation. Computational efficiency is important for detection of PS in clinical electrophysiology.
Lee YS +5 more
europepmc +2 more sources
Dielectric metasurfaces based on a phase singularity in the region of high reflectance [PDF]
NanophotonicsMetasurfaces, two-dimensional planar optical devices based on subwavelength-scale structures, have garnered significant attention for their potential to replace conventional optical components in various fields. These devices can manipulate the amplitude,
Jang Jaewon +5 more
doaj +2 more sources