Browsing by Author "Toy, Muhammed Fatih"
Now showing items 1-11 of 11
-
In-situ measurement of anisotropic Young’s modulus in fused deposition modeling printed cantilevers
Tekin, Engincan; Çağmel, Mehmet; Aydın, Can Ozan; Ferhanoğlu, Onur; Toy, Muhammed Fatih (IOP Publishing Ltd, 2023)In this study, we investigate the effect of fused deposition modeling printing direction on the effective Young's modulus value of cantilevers. Through finite-element simulations and experiments with seven different ... -
An integrated top-stage incubator and lens free holographic imaging system for culture monitoring applications
Özbilgin, Zeynep; Akşit, Sevdenur; Toy, Muhammed Fatih (SPIE, 2022)Lens free inline holographic microscopy was shown to be a potent approach for many applications relying on cellular imaging. Applications requiring a large field of view at moderate resolution are the ones that are most ... -
Low-cost top stage incubator for live cell imaging applications
Özbilgin, Zeynep; Toy, Muhammed Fatih; Akşit, Sevdenur (Institute of Electrical and Electronics Engineers Inc., 2021)A top stage incubator is an essential equipment for long term imaging of live cells on a standard microscope. A low cost alternative to off-The-shelf top stage incubators is realized by using 3D printing technology. A ... -
Maskless lithography with holographic feedback for the fabrication of optical elements
Gürcan, Tolga; Toy, Muhammed Fatih (SPIE, 2022)Photolithography has become a powerful tool in the fabrication of micro-optical elements following the advancements in grayscale approaches. However, hitting tight design tolerance goals require precise control of all ... -
Quantitative phase macroscopic system for label-free imaging of tissue sections
Toy, Muhammed Fatih (İstanbul University, 2021)Optical microscopes are typically designed as versatile tools that are capable of imaging at various modalities with different resolutions in respective visual fields. A large extend of versatility causes increased complexity, ... -
Refractive index tomography of myelinating glial cells
Toy, Muhammed Fatih; Kurt Vatandaşlar, Burcu; Kerman, Bilal Ersen (SPIE-Int Soc Optical Engineering, 2019)Refractive index tomography as an emerging technique enables the 3D morphological investigation of cells with no marker. Here, refractive index tomographic imaging of myelinating glial cells is presented. Myelin as a signal ... -
Scattering metal waveguide based speckle-enhanced prism spectrometry
Çetindağ, Şakir Kaan; Toy, Muhammed Fatih; Ferhanoğlu, Onur; Çivitci, Fehmi (IEEE - Institute of Electrical and Electronics Engineers, Inc., 2020)We present an optical efficiency improved speckle spectrometer where a scattering metal wave-guide is utilized along with a conventional prism spectrometer. We conducted extensive tests on 25 different scatterers, involving ... -
Speckle-enhanced prism spectrometer
Çetindağ, Şakir Kaan; Ferhanoğlu, Onur; Toy, Muhammed Fatih; Çivitçi, Fehmi (IEEE Computer Society, 2019)We present an improved prism spectrometer with high wavelength range and spectral resolution. The device is an upgraded prism spectrometer that utilizes an additional scattering medium leading to a wavelength-dependent ... -
A speckle-enhanced prism spectrometer with high dynamic range
Çetindağ, Şakir Kaan; Toy, Muhammed Fatih; Ferhanoğlu, Onur; Çivitçi, Fehmi (IEEE Inst Electrical Electronics Engineers Inc, 2018)We present a novel spectrometer device offering a wide wavelength range and high resolution. The device builds upon a conventional prism spectrometer; however, an additional scattering medium is introduced to generate a ... -
Total internal reflection holographic microscopy for cellular imaging
Gürcan, Tolga; Toy, Muhammed Fatih (SPIE, 2022)The study of interfacial structures is of utmost importance not only for various research fields such as cell biology and display systems but also their sub-disciplines. One of the traditional means of imaging buried ... -
Visualizing hydrogen peroxide and nitric oxide dynamics in endothelial cells using multispectral imaging under controlled oxygen conditions
Altun, Hamza Yusuf; Seçilmiş, Melike; Yang, Fan; Akgül Çağlar, Tuba; Vatandaşlar, Emre; Toy, Muhammed Fatih; Vilain, Sven; Mann, Giovanni E.; Öztürk, Gürkan; Eroğlu, Emrah (2024)The complex interplay between hydrogen peroxide (H2O2) and nitric oxide (NO) in endothelial cells presents challenges due to technical limitations in simultaneous measurement, hindering the elucidation of their direct ...
