Related Experiment Video
Updated: Jan 27, 2026

Preparation of Silicon Nanowire Field-effect Transistor for Chemical and Biosensing Applications
Published on: April 21, 2016
Design of anapole mode electromagnetic field enhancement structures for biosensing applications
Abstract:
The design of an all-dielectric nanoantenna based on nonradiating "anapole" modes is studied for biosensing applications in an aqueous environment, using FDTD electromagnetic simulation. The strictly confined electromagnetic field within a circular or rectangular opening at the center of a cylindrical silicon disk produces a single point electromagnetic hotspot with up to 6.5x enhancement of |E|, for the 630-650 nm wavelength range, and we can increase the value up to 25x by coupling additional electromagnetic energy from an underlying PEC-backed substrate. We characterize the effects of the substrate design and slot dimensions on the field enhancement magnitude, for devices operating in a water medium.
More Related Videos
Related Concept Videos
Electromagnetic Fields
However, the observation of...
MOSFET: Enhancement Mode
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
The Electromagnetic Spectrum
The Electromagnetic Spectrum
Design Example: Application of Archimedes' Principle
The volume of seawater displaced by the block is determined by first calculating the block's weight. This is done by multiplying the...
Field Application of Global Positioning System

