ORGANİK ALT TAŞLAR ÜZERİNE DEPOLANMIŞ GERMANYUM NANO TABAKASININ YÜZEY VE ANTİBAKTERİYEL ÖZELLİKLERİNİN İNCELENMESİ

Germanyum elementi katı hal elektronik aygıt üretimi ve antibakteriyel uygulamalar için oldukça önemli bir elementtir. Elektronik cihazlar ve optoelektronik aygıtlarda oldukça yaygın olarak kullanılmaktadır. Polietilentereftalat (PET) malzemeler ise yüksek geçirgenliğe sahip organik alt taş malzemelerden birisidir. PET malzemeler eğilebilir ve bükülebilir elektronik aygıtlarda kullanılmaktadır. Bu çalışmada PET üzerine, nano tabaka halinde kaplanmış germanyum elementinin antibakteriyel ve yüzey özellikleri incelenmiştir. Germanyum elementi başarılı bir şekilde PET malzeme üzerinde biriktirilebilmiş ve antibakteriyel özellikleri gram pozitif Staphylococcus aureus (ATCC29213) ve gram negatif Escherichia coli (ATCC11775) bakterilerine karşı test edilmiştir. Üretilen germanyum kaplamanın kalınlığı yaklaşık 200 nm ve tanecik boyutu ise yaklaşık 40 nm civarındadır. Üretilen yapıların kristal yönelimleri (022), (133) ve (224) olarak belirlenmiştir. XRD ve EDX analizlerine göre, depolanmış germanyum elementinin; PET’i oluşturan yapılar ile reaksiyona girmediği ve safsızlık atomları içermediği görülmüştür. Ayrıca germanyum kaplanmış PET malzemenin; atomik kuvvet mikroskobu ve taramalı elektron mikroskobu görüntüleri ile yüzey analizleri yapılmıştır. Bunlara ilave olarak yine germanyum kaplı PET malzemenin yüzey pürüzlülüğü, tane yükseklik dağılımı, temas açısı değerleri, geçirgenlik ve soğurma analizleri de bu çalışma kapsamında belirlenmiştir.

Anahtar Kelimeler:

Germanyum, Polietilentereftalat; Antibakteriyel, Yüzey Özellikleri

An Investigation of Antibacterial and Surface Properties of the Germanium Nano Layer Deposited on Organic Substrates

The element germanium is an important material for the solid state device fabrication and antibacterial applications. It has been widely used for the optoelectronic applications. Polyethylene terephthalate (PET) materials is a organic substrate materials with high transparency. It is used to in flexible and bendable electronic device in present and future. In this study, antibacterial and surface properties of the germanium layer deposition with nano thicknesses were investigated. Germanium material was successfully deposited on PET substrate and antibacterial properties against to gram positive Staphylococcus aureus (ATCC29213) and gram negative Escherichia coli (ATCC11775) bacterias were tested. Germanium layer thicknesses was measured as 200 nm and grain size was calculated about 40 nm. Crystal formations of the deposited layer were determined as (022), (133) and (224) formation. According to to XRD and EDX analysis, it found that deposited germanium layer was not contain any impurity and chemical bonds to atoms of PET substrate. Moreover, surface analysis of deposited PET sample were realized by scanning electron microscopy and atomic force microscopy. Furthermore, surface roughness, rain height distribution, contact angle, transparency and absorbance values were determined in this paper.

Keywords:

Germanium, Polyethylene terephthalate; Antibacterial; Surface Properties,

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