Tenders of Universit T Potsdam

Furniture for setting up a self-learning zone

For the preparation of flow cells and flow cavities for measuring chemical reactions under strong coupling using laser infrared spectroscopy, Caf2 windows of high quality (as little scattered light as possible) and with defined holes (inlet/outlet of the sample into the measuring cell) are required. The measuring cell is modified according to Bredenbeck et al, J.sci. Instr. 2003 and Caf2 windows with the requested quality are crucial for the signal quality and tightness of the cells. Caf2 window (ir) Ø 25.4(±0.1) mm x 2(±0.1) mm Optically polished on both sides Flatness: Lambda/2 @ 633 Nm S/d: 20/10 - 60 pieces Caf2 window (ir) With holes Ø 25.4(±0.2)mm x 2(±0.1)mm Optically polished on both sides Flatness: Lambda/2 @ 633 Nm S/d: 20/10 With 2 holes Ø 0.8(±0.1) mm The holes are located 8(±0.1) mm away from the center of the window and form a straight line with the center Deviation of the center of the hole from the straight line ±0.1 mm - 20 pieces Including transport.

Subject of the procurement GPS - system for GPS, Glonass, Galileo and other satellites including tablet & user software, all charging cables, carbon rod, RTK accuracy <2 cm

Subject of the procurement: Time-to-digital converter. A time-to-digital converter is to be purchased as an extension of the Pulsestreamer 8/2 measuring electronics from Swabian Instruments for controlling the high-performance microscope. The device is a standalone time-to-digital converter for reading out single photon events. The device must be suitable for both time-correlated single photon measurements and photon correlation measurements. - 4 independent counting channels - Time resolution of less than 50 ps - Dead time of less than 5ps - Counting rate per channel of more than 320 MHz - Input - Connectivity: USB 3.0 or Ethernet - Software application for flexible configuration of the measuring electronics for Windows 10/11 (GUI) and Python API available. - Full compatibility with the Quidi open source project for microscope control

The subject of the procedure is the procurement of a cantilever holder set for VT AFM.

Subject of Procurement Premix Gas Code: Tuimix-ctxx-arfv3.0, Size 4, With Din 477; #8 Fitting Per Coherent

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Synthesizer

The subject of the procedure is the procurement of a transmission cell and accessories in order to investigate temperature-dependent processes. The transmission cell must meet the following technical requirements: - The transmission cell must have an aperture of 20 mm. Connections for sample flow must be via Swagelok. The cell must be completely dismantled. The sandwich design made of calcium fluoride windows and PTFE spacers in various layer thicknesses must be able to withstand a pressure of up to 5000 psi when assembled. Temperature control must be possible in a range of 0-240 degrees Celsius. The temperature control unit must meet the following technical requirements: - Computer-aided temperature control of the cell The CAF2 window must meet the following technical requirements: - To match the cell, the CAF2 window must have a diameter of 25 mm and a thickness of 2 mm. The surface quality must be at least ?/2. The Transmission Cell Must Fulfil The Following Technical Requirements: - The Transmission Cell Must Have An Aperture Of 20 Mm. Connections For A Sample Flow Must Be Made Via Swagelok. The Cell Must Be Completely Demountable. The Sandwich Design Of Calcium Fluoride Windows And Ptfe Spacers In Different Layer Thicknesses Must Be Able To Withstand A Pressure Of Up To 5000 Psi When Assembled. Temperature Control Must Be Possible In A Range Of 0-240 Degrees Celsius. The Temperature Control Unit Must Fulfil The Following Technical Requirements: - Computerized Temperature Control Of The Cell The Caf2 Window Must Fulfil The Following Technical Requirements: - Suitable For The Cell, The Caf2 Window Must Have A Diameter Of 25 Mm With A Diameter Of 2 Mm. The Surface Quality Must Be At Least ?/2.

The subject of the contract is the operation of two hot drinks machines at the Golm and Griebnitzsee locations. The term is expected to last 42 months and is due to begin on January 1, 2025. If the start of the term is delayed, the term will be shortened accordingly and will end on June 30, 2028 at the latest. This publication is a negotiated award with public competition. The documents required for participation and the applicable conditions are stored in the project room on the Brandenburg procurement marketplace. After the participation period has expired, all companies that have submitted an application to participate and are suitable will receive a separate invitation to submit an offer. In the current phase of the procedure, no offer is yet required.