Somayeh Saadat Niavol

ORCID: 0000-0001-7615-5330
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About
Contact & Profiles
Research Areas
  • Gas Sensing Nanomaterials and Sensors
  • ZnO doping and properties
  • Analytical Chemistry and Sensors
  • Electrochemical sensors and biosensors
  • Advanced Sensor and Energy Harvesting Materials
  • Semiconductor materials and devices
  • Advanced Chemical Sensor Technologies
  • Acoustic Wave Resonator Technologies
  • Conducting polymers and applications
  • Copper-based nanomaterials and applications
  • Advanced Photocatalysis Techniques
  • Thin-Film Transistor Technologies
  • Transition Metal Oxide Nanomaterials
  • TiO2 Photocatalysis and Solar Cells
  • Chalcogenide Semiconductor Thin Films
  • Ferroelectric and Piezoelectric Materials

University of Missouri
2024-2025

University of Mazandaran
2020-2023

Islamic Azad University, Lahijan Branch
2015-2023

Forschungsverbund Berlin
2020

Paul Drude Institute for Solid State Electronics
2020

University of Guilan
2012

Tungsten oxide (WO3) doped indium (IWO) field-effect transistors (FET), synthesized using atomic layer deposition (ALD) for three-dimensional integration and back-end-of-line (BEOL) compatibility, are demonstrated. Low-concentration (1∼4 W atom %) WO3-doping in In2O3 films is achieved by adjusting cycle ratios of the tungsten precursors with oxidant coreactant. Such doping suppresses oxygen deficiency from In2O2.5 to stoichiometry only 1 % W, allowing devices turn off stably enhancing...

10.1021/acs.nanolett.4c00746 article EN Nano Letters 2024-04-30

Aluminum nitride-based ferroelectric thin films show significant promise for neuromorphic computing applications. Deposition by reactive sputtering, the most common approach to synthesizing these materials, leads mosaic disorder and point defects. To combat challenges, we use a different demonstrate growth of amorphous aluminum oxynitride (AlON) inductively coupled hydrazine plasma enhanced atomic layer deposition (ALD). Electrical property characterization using positive-up negative-down...

10.1116/6.0004218 article EN Journal of Vacuum Science & Technology B Nanotechnology and Microelectronics Materials Processing Measurement and Phenomena 2025-02-11

While electrical poling of organic ferroelectrics has been shown to improve device properties, there are challenges in visualizing accompanying structural changes. We observe induced changes ferroelectric domains by applying differential phase contrast (DPC) imaging the scanning transmission electron microscope, a method that used spatial distributions electromagnetic fields at atomic scale. In this work, we obtain DPC images from unpoled and electrically poled polyvinylidene fluoride...

10.1063/5.0200724 article EN Applied Physics Letters 2024-04-08

Within this study, mesoporous Zn2SnO4 nanostructures have been prepared by a facile and eco-friendly hydrothermal method. The were characterized various methods such as X-ray diffraction, Field emission scanning electron microscopy, Energy dispersive spectroscopy, Fourier transform infrared Brunauer–Emmett–Teller analysis. samples deposited on alumina substrates for the fabrication of vapor sensors. gas-sensing ability was investigated towards methanol, isopropanol, dimethylformamide,...

10.2139/ssrn.4347547 article EN 2023-01-01

ZnO quantum dots were successfully decorated on graphene oxide (GO) and nanoplatelets (GNP) using a simple hydrothermal method. The characteristics of synthesized ZnO/GO ZnO/GNP nanocomposites examined by employing different analyzing methods such as X-ray diffraction (XRD), energy dispersive spectroscopy (EDX), Raman photoluminescence spectroscopies, Transmission electron microscopy (TEM), Brunauer–Emmett–Teller analysis (BET). Following that, the capabilities samples efficient gas sensors....

10.2139/ssrn.4597493 preprint EN 2023-01-01

ZnO quantum dots were successfully decorated on graphene oxide (GO) and nanoplatelets (GNP) using a simple hydrothermal method. The characteristics of synthesized ZnO/GO ZnO/GNP nanocomposites examined by employing different analyzing methods such as X-ray diffraction (XRD), energy dispersive spectroscopy (EDX), Raman photoluminescence spectroscopies, Transmission electron microscopy (TEM), Brunauer–Emmett–Teller analysis (BET). Following that, the capabilities samples efficient gas sensors....

10.2139/ssrn.4577794 preprint EN 2023-01-01
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