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In-situ observation of structural- and resistance-changes by redox reactions

• XRD chamber: Nextron XRD Micro Probe System

• Sample: SrFe0.8Co0.2O2.5 on 001 SrTiO3

• Beam line: Pohang Accelerator Laboratory 3D beam line

• Measurement: Real-time XRD and resistance measurements in supply of N2 (2.5 hrs), O2 (6 hrs), and N2 (2.5 hrs) in sequence. Flow rate was 20 sccm.

• Results: The lattice constant of SrFe0.8Co0.2O2.5 thin film shifted sequentially to 3.99 Å (N2), 3.90 Å (O2), and 4.00 Å (N2). Associated resistance changes is observed due to topotactic transformations.

This research work is supported by 'Busan Open Laboratory Business Meeting Market Demands' project.

Hydrogen gas sensor

ACS Sens. 2021, 6, 4145−4155

Hydrogen Gas Sensor

ACS Sens. 2021, 6, 4145−4155

Figure. Integrated in-plane microheater’s (a) temperature variations in terms of the applied DC bias voltages, (b) repeatability at 180 °C, (c) sensitivity and linearity, and (d) surface temperature analysis by a thermal imaging camera at 8 V DC bias.

Resistive gas sensor characterization

Measured while purging hydrogen and nitrogen mixed gas without using vacuum pump

Sample: Palladium coated Zinc oxide(ZnO/Al2O3) nanowire for hydrogen gas sensing.

Raman mapping

This data was contributed by Nextron's partner, Weve.
Micro Probe System is perfectly compatible with Weve's products.

Raman Spectrometry

Vanadium dioxide(VO2) nanowire Study of phase transition by temperature

Photocurrent mapping

Optical transmittance of VO2 thermochromic films

Materials and Design 182 (2019) 107970

Figure. Transmittance hysteresis curves at wavelength of 2000 nmfor (a) thermal and (b) IPL sintered VO2 films. The temperature corresponding to themaximumof first-order derivative curves for (c) thermal and (d) IPL sintered VO2 films.

Light-emitting diodes

Nanoscale, 2019, 11, 18444–18448

Figure. Temperature-dependent I–V characteristics for (a) the reference LED and (b) the self-protective LED under pulse operation.

Piezoresistive Pressure Sensor

Sensors and Actuators A 314 (2020) 112217

The bridge voltage as function of pressure after an offset voltage correction at 100 kPa. The Wheatstone bridges connections to the SMU; schematically (left) and through microscope (right).

Thermal resonant frequency measurement

This data was contributed by Nextron’s partner, Polytec GmbH. Micro Probe System is used for Polytec’s products as their environmental chamber.

Electromigration test

J. Phys.: Condens. Matter 34 (2022) 175401

Figure (a) Top view of the sample used in electromigration test. (b) A schematic overview of the electromigration measurement setup.

Figure. Electromigration results for 300 °C-deposited Al stripes under 1 MA cm−2 at 200 °C, 250 °C, 300 °C, and 350 °C at 10 h.

MIT (Metal-Insulator Transition)

Single crystalline VO2 nanobeams Study of MIT (Metal-Insulator Transition)

Rapid Microfluidic PCR (Polymerase Chain Reaction)

Slide glass substrate Denaturation at 94 °C and annealing/extension at 59 °C

Other Applications

  • • Gas sensor characterization
  • • Rapid Microfluidic PCR (Polymerase Chain Reaction)
  • • Photovoltaic cells’ and thermoelectric materials’ characterization
  • • Transistors, diodes, LED, ... testing
  • • Bulk and thin film materials’ thermal conductivity measurements (3-ω Method)
  • • Phase transition materials’ electrical/optical characterization (metal oxides, Memristor,…)
  • • Characterization of MEMS/NEMS mechanical and electro- mechanical resonators(reference clocks, mass sensors)
  • • Characterization of micro-coils and micro-antenna for inductive sensors(Impedance spectroscopy of biological tissues, In vivo RMN)
  • • Capacitive, resistive & resonant micro/nano sensors testing