Akademik Veri Yönetim Sistemi
Gürol A., Kıyıkcı O. (Yürütücü), Ekinci D., Bakan B.
Diğer Ülkelerdeki Özel Organizasyonlar Tarafından Desteklenmiş Proje, 2025 - 2026
The objective of this proposal is to investigate the functionalised reduced graphene oxide (F-RGO) coatings applied to cotton textile fibres. We will establish a BM02 synchrotron-IR microspectroscopy workflow that delivers the diffraction-limited ≈ 4 µm lateral resolution attainable with the Bruker Hyperion 3000 in the 4000–600 cm⁻¹ range. At this resolution we can visualise micron-scale chemical heterogeneities and detect any uncoated “dead zones” across the fabric surface. For each sample a 200 µm × 200 µm area will be raster-scanned with 4 µm steps, yielding roughly 2 500 spectra that can be acquired within a single beamline shift using single-element scanning, or in only a few minutes when focal-plane-array (FPA) imaging is enabled. Every spectrum will be ratioed to a gold reference and internally normalised to the textile’s C = O (~1720 cm⁻¹) and CHₓ (~2920 cm⁻¹) bands, ensuring reliable comparison of the heteroatom-specific absorptions.
We will map three functionalised textiles—DCDPS-treated (Si–O–C), 4-ABA-treated (C–N–C) and 4-MBA-treated (C–S–C)—together with their respective controls (RSi, RA, RM). From the hyperspectral cubes we will integrate the Si–O–C (1000–1100 cm⁻¹), C–N–C (1230–1300 cm⁻¹) and C–S–C (720–780 cm⁻¹) regions, extract intensity histograms, calculate standard deviations and Gini coefficients, and evaluate spatial autocorrelations to quantify chemical uniformity. These metrics will be correlated with off-line electrochemical performance data, establishing clear links between coating homogeneity and device behaviour.
By documenting each experimental and analytical step—including sample mounting, reference collection, spectral normalisation and statistical processing—we will deliver a reproducible, non-destructive IR-mapping protocol that serves as a quality-assurance tool for future graphene-based wearable electronics. The ≥ 10³-fold brilliance of the SESAME synchrotron relative to a conventional Globar source is indispensable for achieving the required signal-to-noise ratio and mapping speed, making BM02 the only viable platform for this study.