Ag-Cu Nanoarchitecture for Enhanced LSPR Absorption: the Role of Surface Roughness and near-field Interactions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00644751" target="_blank" >RIV/60077344:_____/25:00644751 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/25:43909856 RIV/00216208:11320/25:10506766

Výsledek na webu

<a href="http://DOI" target="_blank" >http://DOI</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/admi.202400785" target="_blank" >10.1002/admi.202400785</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ag-Cu Nanoarchitecture for Enhanced LSPR Absorption: the Role of Surface Roughness and near-field Interactions

Popis výsledku v původním jazyce

The plasmonic properties and biosensing performance of a nanocomposite with incorporated Cu and Ag nanoparticles (NPs) are studied experimentally. The concept's viability is verified by detecting specific anti-decorin-binding protein A (DbpA) from Borrelia afzelii antibodies, typically produced by a living organism in response to Lyme disease infection, carried out in real-life negative and positive blood sera. It is shown that the addition of Cu NPs on top of silver NPs regularly boosts the plasmonic absorption caused by optical and electrical changes in the vicinity of the surface compared to silver NPs only. The Finite-difference time-domain (FDTD) simulations of near-field interaction in different environments propose suitable Cu-Ag coupling modes responsible for the modulation of the localized Surface Plasmon Resonance (LSPR) bands. Furthermore, the increased surface roughness, resulting from the architecture of combined nanoparticles of different metals, significantly enlarges the effective surface area for sensing applications, which consequentially leads to better species immobilization. The observed distinguishable differences between the negative and positive sera of LSPR response, and the high sensitivity and selectivity together with high stability of the nanocomposite (suppressed aging) opens a door for concepts of rapid, low-cost, sensitive LPSR-based biodetection platforms.

Název v anglickém jazyce

Ag-Cu Nanoarchitecture for Enhanced LSPR Absorption: the Role of Surface Roughness and near-field Interactions

Popis výsledku anglicky

The plasmonic properties and biosensing performance of a nanocomposite with incorporated Cu and Ag nanoparticles (NPs) are studied experimentally. The concept's viability is verified by detecting specific anti-decorin-binding protein A (DbpA) from Borrelia afzelii antibodies, typically produced by a living organism in response to Lyme disease infection, carried out in real-life negative and positive blood sera. It is shown that the addition of Cu NPs on top of silver NPs regularly boosts the plasmonic absorption caused by optical and electrical changes in the vicinity of the surface compared to silver NPs only. The Finite-difference time-domain (FDTD) simulations of near-field interaction in different environments propose suitable Cu-Ag coupling modes responsible for the modulation of the localized Surface Plasmon Resonance (LSPR) bands. Furthermore, the increased surface roughness, resulting from the architecture of combined nanoparticles of different metals, significantly enlarges the effective surface area for sensing applications, which consequentially leads to better species immobilization. The observed distinguishable differences between the negative and positive sera of LSPR response, and the high sensitivity and selectivity together with high stability of the nanocomposite (suppressed aging) opens a door for concepts of rapid, low-cost, sensitive LPSR-based biodetection platforms.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10608 - Biochemistry and molecular biology

Projekt

<a href="/cs/project/GF21-05030K" target="_blank" >GF21-05030K: Opticky polopropustné nanostruktury oxidu titanu na površích s komplexní geometrií pro zvýšení fotokonverze a citlivosti snímačů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Advanced Materials Interfaces

ISSN

2196-7350

e-ISSN

2196-7350

Svazek periodika

12

Číslo periodika v rámci svazku

JUL

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

13

Kód UT WoS článku

001392190900001

EID výsledku v databázi Scopus

2-s2.0-85214699376