Effect of a Mediterranean Diet-Based Nutritional Intervention on the Risk of Developing Gestational Diabetes Mellitus and Other Maternal-Fetal Adverse Events in Hispanic Women Residents in Spain

Verónica Melero

doi:10.3390/nu12113505

Bi-metallic transition metal nitrides-based gain-assisted nanomatryoshka for lasing and switching

2026-02-01

0

PRE

AI

P

Pankaj Pathania *

M

Manmohan Singh Shishodia

J

Jyoti Katyal

DOI：10.1080/09500340.2026.2620463

Original

Original request for help

Save

Abstract

En 中文

Sub-wavelength light confinement at surface plasmon resonance in refractory transition metal nitrides (TiN, ZrN) and their bimetallic system [P-SiO2-Q (P = ZrN/TiN and Q = TiN/ZrN)]-based gain-assisted nanomatryoshka (metal-dielectric-metal) has emerged as an effective platform for developing low threshold SPASER (Surface Plasmon Amplification by Stimulated Emission of Radiation) and ultrafast tunable optical-switches. The present manuscript focuses on (I) examining surface plasmon amplification, tunable optical switching and SPASER characteristics in gain-assisted nanomatryoshka, (II) excitation of hybridized modes by using suitable bimetallic composition of ZrN and TiN, (III) optimizing low and comparable gain requirements for different hybridized modes. The analysis based on quasistatic theory at resonant conditions predicts that the absorption cross-section will be maximum (negative) and the corresponding scattering cross-section should be switched from ultra-high to ultra-low value at the critical gain at dielectric sandwich layer. Gain requirements for the bimetallic combination ZrN-SiO2-TiN are 0.84721 at $ {\lambda _R} = 733\textrm{nm} $ lambda R=733nm (lasing mode) and 0.74186 at $ {\lambda _R} = 507.1\,\textrm{nm} $ lambda R=507.1nm (pumping mode). The nearly equal gain requirement for excitation of low- and high-energy modes in optimized ZrN-SiO2-TiN, respectively lead to the realization of a low-cost and low-threshold nanolaser. In the current design, stilbene chromophore is proposed as a gain material, which offers broad fluorescence tunability (similar to 125 nm) and a remarkably large Stokes shift (similar to 227 nm) in DMSO. The current investigation can lead to the accomplishment of efficient, low-cost tunable optical-switching and SPASER structures/devices.

Keywords:

SPASER

plasmonic

optical switch

nanomatryoshka

refractory transition metal nitrides

Bi-metallic transition metal nitrides-based gain-assisted nanomatryoshka for lasing and switching

Abstract

Journal

Organization

Cited Papers

Citing Papers