Hande Güneş

PhD, Chemical and Biological Engineering

Inorganic Materials

hande.gunes@measurlabs.com+358 50 313 7765
Hande Güneş

Hande Güneş works at Measurlabs as a team lead and testing expert specializing in inorganic materials and powders. She considers the manipulation of materials at the atomic level to produce advanced technological solutions to be one of the most rewarding parts of the work, which is why she handles the bulk of Measurlabs’ nanomaterial characterization projects.

Hande holds a PhD in chemical engineering from Koç University in Turkey, where she focused on studying heterogeneous catalysis. Before joining Measurlabs, Hande worked on catalytic converters and emissions in the automotive industry and on indoor air quality solutions in the household appliances industry. The development of innovative solutions in these industries is one of her key professional interests.

Academic publications

Hande has co-authored several scientific publications on topics including nanocomposites and Pichia pastoris fermentation. Examples include:

Hande’s latest articles in our blog

Hande Güneş
Hande Güneş

October 24, 2024

SEM vs TEM: How to choose the most suitable electron microscopy technique for your application

Scanning electron microscopy and transmission electron microscopy are both powerful techniques for high-resolution imaging, but they have some key differences.

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SEM vs TEM: How to choose the most suitable electron microscopy technique for your application
Hande Güneş
Hande Güneş

November 16, 2023

Powder characterization: techniques and applications

Key powder properties to be determined include particle size and shape, surface morphology, density, porosity, and flow properties.

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Powder characterization: techniques and applications
Hande Güneş
Hande Güneş

October 18, 2023

Summary of EFSA guidelines for assessing the safety of nanomaterials in food – which tests are needed?

In addition to engineered nanomaterials, conventional food products may need testing to prove they do not contain nanoparticles or have nanoscale properties.

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Summary of EFSA guidelines for assessing the safety of nanomaterials in food – which tests are needed?

Read articles by our experts and guest authors on the practical implications of regulations, scientific advancements, and the ideal uses of different analysis methods.

Hande’s top testing services

Powder XRD measurement - Quantitative analysis

Phase identification and quantification (Rietveld analysis) of a crystalline powder material using X-ray diffraction (XRD). The analysis can also provide unit cell dimensions. The analysis is only suitable for materials with at least one crystalline phase. The quantification accuracy is roughly 0.1 %, depending on the sample matrix and the phase in question. The available temperature range for XRD measurements is 25-1100 °C and the crystallinity can be studied as a function of temperatures. The measurements can be done under a normal atmosphere, inert gas, or vacuum. Please contact our experts to discuss the available temperature and atmosphere combinations. Please mention which crystalline phases your material contains and which ones are you interested in quantifying when requesting testing. However, the method can be applied to unknown phases as well. Either a tabletop or a synchrotron XRD can be used to perform the measurements.
189–569 €
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Elemental analysis of solid and liquid samples with XRF

DIN 51418-1-08, EN 15309
XRF is a quantitative and qualitative method that can be used to analyze solid and liquid materials. This method is intended for a standard screening of homogeneous materials that do not require special sample preparation, precautions, or have any other special requirements. Wavelength-dispersive XRF (WDXRF) is used to perform the measurements unless energy-dispersive XRF (EDXRF) is specifically requested.
189–299 €
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SEM-EDX imaging

Imaging of the sample using a scanning electron microscope (SEM) with energy-dispersive X-ray spectroscopy (EDX or EDS). Typically, several images are taken with varying magnifications to get a good overview of the sample. An EDX mapping, line scan, or point measurement is collected to measure the sample composition (elemental at.% or wt.%). Non-conductive samples can be prepared with a metallic coating. For cross-section measurement, additional preparation might be needed: FIB, BIB, or freeze fracturing.
157–609 €
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Particle size distribution by laser diffraction (dispersions)

ISO 13320
Determination of particle size distribution (PSD) by Laser Diffraction (LD). Analysis can be performed on dispersions or solids that can be dispersed in water or organic solvents. The method can analyze particle sizes from 0.010 µm to 2000 µm. The test report will include a particle size distribution graph, values for volumetric mean = D[4,3], and the following percent finers (percent finers represent the amount of the material from the sample that is smaller than a certain size): Dv(10) / D(v,0.1) / 10 % , Dv(25) / D(v,0.25) / 25 % , Dv(50) / D(v,0.5) / 50 % = median, Dv(75) / D(v,0.75) / 75 % , Dv(90) / D(v,0.9) / 90 %.
72–365 €
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