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Hankkija

Vastaanotettu Hilmaan2022-05-03
Ilmoituksen numero2022-099971
TED numero2022/S 089-239897
OstajaorganisaatioAalto University Foundation sr (2228357-4 )

FI- AALTO
http://www.aalto.fi/en/
Hankinnan otsikkotiedotTwo electron detectors for transmission electron microscopes
Hankinnan yhteenlaskettu kokonaisarvo koko ajalle (ilman alv:ta) arvio
Hankinnan yhteenlaskettu kokonaisarvo koko ajalle (ilman alv:ta) lopullinen
Alkuperäinen ilmoitushttps://www.hankintailmoitukset.fi/en/public/procurement/69992/notice/99971/overview
Originaali JSON tietue99971.json

Ostettava

Hankinnan lyhyt kuvausThe main application for electron detectors is to facilitate transmission electron microscope (TEM) imaging. Aalto University is looking to purchase two electron detectors to enhance its imaging capabilities. The detectors are to be installed in the existing TEM instruments, preferably retaining the older CCD detectors (one in each TEM). The first detector will be installed in the dedicated 300 kV cryoTEM (JEOL JEM-3200FSC). This detector should allow imaging under the extremely low dose conditions often employed with beam sensitive materials. The workflow used with block co-polymer sections relies heavily on live Fourier transform of the live image (live-FFT). The software must deliver live-FFT of sufficient quality to identify areas of interest in real time. However, the most sensitive block co-polymer sections are typically ruined at first exposure to the electron beam. Therefore, the detector should include a continuous image buffer of the live image so that at least the live frame can be salvaged. The detector must be able to perform single electron counting and dose fractionation. The detector will also be used for diffraction and EFTEM imaging where a linear acquisition mode will be useful. The microscope is also operated at lower voltages when necessary, therefore consistent detector performance across voltage ranges 100 kV to 300 kV is appreciated. This detector is required to fulfil a versatile use role with emphasis on detective quantum efficiency and high signal-to-noise ratio with low inherent noise. The second detector will be installed in the analytical 200 kV TEM (JEOL JEM-2800). The user base of this microscope is highly varied and the microscope is used to study beam insensitive materials as well as beam sensitive materials. Aalto University wants to enhance the systems capabilities regarding beam sensitive materials and in-situ studies with a faster, more sensitive detector. This detector is not required to perform single electron counting. In addition to frame rate and sensitivity the detector must have a continuous image buffer. For further information, see separate documents (as attachment files at the Hanki / Tarjouspalvelu Service at https://www.hanki-palvelu.fi/en/).
Hankintanimikkeistö (CPV) pääLaboratory, optical and precision equipments (excl. glasses) (38000000)
Hankintanimikkeistö (CPV) muut
AluekoodiFI1B1
Pääasiallinen suorituspaikka

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