Duman, Sinem

Profile URL
https://hdl.handle.net/11147/16168
Name Variants
Duman, S
Duman, S.
Job Title
Email Address
Main Affiliation
03.05. Department of Electrical and Electronics Engineering
Status
Former Staff
Website
ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID

Sustainable Development Goals

SDG data is not available
This researcher does not have a Scopus ID.
This researcher does not have a WoS ID.
Scholarly Output

2

Articles

1

Views / Downloads

1724/971

Supervised MSc Theses

1

Supervised PhD Theses

0

WoS Citation Count

1

Scopus Citation Count

1

Patents

0

Projects

0

WoS Citations per Publication

0.50

Scopus Citations per Publication

0.50

Open Access Source

2

Supervised Theses

1

JournalCount
Ferroelectrics1
Current Page: 1 / 1

Scopus Quartile Distribution

Competency Cloud

GCRIS Competency Cloud

Filters

2016 - 20192

Settings

search.filters.applied.f.isAuthorOfPublication: search.filters.isAuthorOfPublication.033abeab-0969-4574-b3bb-11e0a5283724

Scholarly Output Search Results

Now showing 1 - 2 of 2
  • Master Thesis
    Graphene Transfer Approaches With Different Support Materials on the Substrates With Cavities
    (Izmir Institute of Technology, 2019) Duman, Sinem; Balantekin, Müjdat; Çelebi, Cem
    A micro capacitive sensor characteristically embraces a thin conductive membrane which is freely suspended above an immovable counter electrode in a parallel plate geometry. Such capacitive structures are found in broad range of applications as a transducer like capacitive micro-machined ultrasonic transducer (CMUT), pressure sensor, resonator and biological or chemical material sensing element. The input can be an ultrasound wave, pressure, chemical or biological mass attachment which result in the deflection of the membrane. Emerging nano materials have shown great potential as candidates for generation of nano and micro electromechanical systems (NEMS, MEMS). Among these nano materials, graphene is regarded as a promising material because of its ultra low mass, thickness, high surface to volume ratio, flexibility, and extraordinary electrical and mechanical properties. However, the transfer of graphene on substrates with micro scale cavities is challenging since the fabrication of large area membranes with a smaller air gap often results in membrane tearing or collapse driven by capillary or electrostatic forces. This study presents a research on the fabrication and the characterization of graphene membranes to be used in micro capacitive sensor applications. Substrates which span a large array of circular and hexagonal micro cavities between 2-100 μm in diameter are fabricated. Graphene transfer with different support materials are studied to fabricate graphene micro membranes. Up to 5 μm diameter membranes on 300 nm deep cavities are demonstrated via scanning electron microscope (SEM) and atomic force microscope (AFM) tools.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Temperature and Pressure Dependence of the Raman Intensity and Frequency of a Soft Mode Near the Tricritical Point in the Ferroelectric Sbsi
    (Taylor & Francis, 2016) Yurtseven, Hasan Hamit; Duman, Sinem
    We analyze the pressure dependence of the intensity and the frequency of a soft mode from the Raman and elastic light scattering experiments as reported in the literature close to the ferroelectric - paraelectric transition in SbSI crystal. The Raman intensity of this mode is analyzed as a function of pressure at constant temperatures of 272K (first order transition) and 234K (tricritical or second order transition) according to a power-law formula. Our analysis of the Raman intensity gives closely the mean field values for the order parameter. From our analysis, we also obtain that the Raman frequency (squared) of the soft mode varies linearly with the pressure at constant temperatures close to the ferroelectric - paraelectric transition in SbSI as obtained experimentally.