Puls Lazer Depozisyonu Yöntemiyle Üretilen Plazmonik Altın Nanoparçacıkların Sensör Özelliklerinin Araştırılması

Yıl 2024, Cilt: 10 Sayı: 2, 632 - 641, 31.12.2024

İlhan Candan , Serap Yiğit Gezgin , Hadice Budak Gümgüm , Hamdi Şükür Kılıç

https://doi.org/10.29132/ijpas.1584049

Öz

Plazmonik altın nanoparçacıklar (Au NP'ler), özellikle Lokalize Yüzey Plazmon Re-zonansı (LSPR) sayesinde, sensör uygulamaları için ideal adaylar olarak öne çıkan üstün optik özelliklere sahiptir. Bu nanoparçacıklar, çevrelerindeki ortamdaki deği-şimlere karşı yüksek hassasiyet gösterir ve bu sayede moleküler etkileşimlerin ve çevresel değişimlerin hassas bir şekilde tespit edilmesini sağlar. Bu çalışmada, kim-yasal reaktiflere ihtiyaç duyulmadan parçacık boyutu, morfolojisi ve dağılımı üzerin-de hassas kontrol imkânı tanıyan temiz ve çok yönlü bir yöntem olan Puls Lazer De-pozisyonu (PLD) ile üretilen altın nanoparçacıkların sensör özellikleri incelenmiştir. PLD işlemi, ayarlanabilir plazmonik özelliklere sahip altın nanoparçacıklar üretmek için lazer akısı, puls süresi ve biriktirme süresi ayarlanarak optimize edilmiştir. Altın nanoparçacıkların yapısal ve optik özellikleri, taramalı elektron mikroskobu (SEM) ve UV-Vis spektroskopisi kullanılarak analiz edilmiş ve parçacık boyutu ile morfolo-jisinin biriktirme parametreleri ile kontrol edilebildiği doğrulanmıştır. Altın nano-parçacıkların sensör performansı, çevrelerindeki ortamın kırılma indisi değişimlerine duyarlılıklarını gösteren LSPR ölçümleri ile değerlendirilmiştir. Özellikle, LSPR piki, protein A dâhil çeşitli analizlere maruz bırakıldığında 50 nm dalga boyu kayması ile ölçülmüş ve bu nanoparçacıkların biyosensör uygulamaları için yüksek hassasiyete sahip olduğunu göstermiştir. Sonuçlar, PLD ile üretilen altın nanoparçacıkların gerçek zamanlı algılama ve çevresel izleme için umut vadeden sensör özelliklerine sahip ol-duğunu ve geniş bir sensör uygulama yelpazesi için verimli ve yeniden üretilebilir bir platform sunduğunu göstermektedir.

Anahtar Kelimeler

Au nanoparçacıklar, LSPR, plazmonik, PLD

Proje Numarası

21406007, FEN.20.006

Investigating Sensor Properties of Plasmonic Gold Nanoparticles Produced By Pulsed Laser Deposition

Öz

Plasmonic gold nanoparticles exhibit exceptional optical properties, particularly Lo-calised Surface Plasmon Resonance, which makes them ideal candidates for sensor applications. These nanoparticles are highly sensitive to changes in their surrounding environment, allowing for precise detection of molecular interactions and environ-mental shifts. In this study, we investigate the sensor properties of gold nanoparticles produced via Pulsed Laser Deposition, a clean and versatile method that allows for precise control over particle size, morphology, and distribution without the need for chemical reagents. Pulsed Laser Deposition process was optimized by adjusting laser fluence, pulse duration, and deposition time to produce gold nanoparticles with tuna-ble plasmonic properties. The structural and optical characteristics of gold nanoparti-cles were analyzed using scanning electron microscopy, and UV-Vis spectroscopy, confirming that the size and morphology of the particles were controllable through the deposition parameters. The sensor performance of gold nanoparticles was evalu-ated through localised surface plasmon resonance measurements, which demonstrated their sensitivity to small changes in the refractive index of the surrounding medium. Specifically, the shift in localised surface plasmon resonance peak was measured up-on exposure to different analytes, including protein A where a wavelength shift of 50 nm measured, indicating the high sensitivity of these nanoparticles for biosensing ap-plications. The results suggest that Pulsed Laser Deposition-produced gold nanoparti-cles possess promising sensor properties for real-time detection and environmental monitoring, offering an efficient and reproducible platform for a wide range of sens-ing applications.

Anahtar Kelimeler

Au nanoparticles, LSPR, plasmonics, PLD

Etik Beyan

The author declares that this study complies with research and publication ethics.

Destekleyen Kurum

Dicle Univertsity, Selcuk University

Proje Numarası

21406007, FEN.20.006

Teşekkür

Selcuk University, Scientific Research Projects (BAP) Coordination Office for the support with the number 21406007 project, Dicle University Scientific Research Project (BAP) Coordination office for the support with the number FEN.20.006 project

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