Resonances and signal to noise ratio of electromagnetic sensors

Article Materials Science, Multidisciplinary

Targeted dielectric coating of silver nanoparticles with silica to manipulate optical properties for metasurface applications

Z. Lalegani et al.

Summary: An epsilon-negative metamaterial (ENM) with core@shell nanoparticles was designed. The optimal performance was achieved by growing a 10 nm SiO2 shell on 54 nm Ag nanoparticles.

MATERIALS CHEMISTRY AND PHYSICS (2022)

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Article Chemistry, Multidisciplinary

The Graphene Field Effect Transistor Modeling Based on an Optimized Ambipolar Virtual Source Model for DNA Detection

Moaazameh Akbari et al.

Summary: This paper presents a compact model of graphene-based Field Effect Transistors (GFETs) using the non-equilibrium Green function (NEGF) for DNA detection sensors. The model, calibrated and optimized through an algorithm, shows good agreement with experimental data and provides an effective approach for the development of GFET biosensors.

APPLIED SCIENCES-BASEL (2021)

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Article Materials Science, Multidisciplinary

Controlling fluctuations in small structures: Hidden information in the noise

Ruijie Qian et al.

Summary: The study revealed that the charge density and electromagnetic field in metallic structures have randomly changing components, affecting the signal to noise ratio in sensors, with the development of nanotechnology leading to smaller sensors. The non-uniform spatial distribution of fluctuations and abrupt changes in magnitude as structure size varies were unexpected findings that provide insights into fundamental physics and can aid in device design improvements.

PHYSICAL REVIEW B (2021)

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Article Engineering, Multidisciplinary