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Time-resolved scanning tunneling microscope system Ultra-high vacuum time-resolved multi-probe microscope USM1400-4P-OPP-USM1400-4P-OPP
Time-resolved scanning tunneling microscope system Ultra-high vacuum time-resolved multi-probe microscope USM1400-4P-OPP-Unisoku Co., Ltd.

Time-resolved scanning tunneling microscope system Ultra-high vacuum time-resolved multi-probe microscope USM1400-4P-OPP
Unisoku Co., Ltd.

Unisoku Co., Ltd.'s Response Status

Response Rate

100.0%

Response Time

51.7hours


About This Product

Observation of ultrafast dynamics measurements of photoexcitation phenomena at the nanoscale.

■Principle of time-resolved STM

The sample is irradiated with pump light and probe light, and the tunneling current flowing between the sample and the probe is measured. When the delay time is short (long), the excited state is occupied (not occupied) by carriers, so the number of carriers excited by the probe light is small (large). As a result, the tunneling current becomes smaller (larger). By measuring the delay time dependence of tunneling current, information on carrier dynamics (such as relaxation time) can be obtained. Furthermore, by changing the tip position, carrier dynamics measurements can be performed with nanoscale spatial resolution.

■Unique delay time modulation method

In order to suppress the probe thermal expansion effect caused by excitation light irradiation and to detect minute time-resolved tunneling current signals with high precision, delay time modulation measurement that changes the delay time in a rectangular waveform is effective. known (patented technology). This device is equipped with a delay time modulation system that is ideal for time-resolved STM measurements and a lock-in amplifier that detects tunneling current in synchronization with the modulation. You can start measuring.

■Lineup

・Low temperature-ultra high vacuum time-resolved STM system USM1400-OPP ・Ultra-high vacuum time-resolved multi-probe microscope USM1400-4P-OPP ・Ultra-high vacuum low temperature scanning probe microscope system USM1200 ・Liquid helium-free ultra-high vacuum low temperature scanning tunneling microscope system USM1800 Features

■Compact excitation light source unit

・Temporal resolution ~70ps - Significantly improved operability ・Long-term stable laser irradiation onto the sample surface ・Wavelength is 532nm ・Nanosecond laser can also be selected

■Carrier dynamics measurement of sample on insulator substrate

・Specimen and probe observation using a long focus microscope ・Independent control of 4 probes ・Gate voltage can be applied

■Application fields of time-resolved multi-probe microscopy

・Carrier dynamics measurement of single-layer TMDC heterostructure ・Exciton dynamics measurement of single-layer TMDC nanostructures ・Measurement of trap level dynamics of single-layer TMDC

  • Product

    Time-resolved scanning tunneling microscope system Ultra-high vacuum time-resolved multi-probe microscope USM1400-4P-OPP

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1 Models of Time-resolved scanning tunneling microscope system Ultra-high vacuum time-resolved multi-probe microscope USM1400-4P-OPP

Image Part Number Price (excluding tax) Sample stage movement range Degree of vacuum Measurement temperature Number of probes Probe stage movement range (sample horizontal direction) Light incidence angle Lens stage movement distance Lens STM scan range
Time-resolved scanning tunneling microscope system Ultra-high vacuum time-resolved multi-probe microscope USM1400-4P-OPP-Part Number-USM1400-4P-OPP

USM1400-4P-OPP

Available upon quote

X, Y: ±2 mm

Ultra high vacuum

Room temperature (low temperature support optional)

4

X. Z: ±2 mm, Y: ±4 mm

Perpendicular to the sample surface

X. -12 mm~+1.5 mm
Y: ±2 mm
Z: ±2 mm

Aspheric lens (NA: 0.3)

2um×2um

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About Company Handling This Product

Response Rate

100.0%


Response Time

51.7hrs

  • Japan

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