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The Nanoscience Centre

Cambridge University nanofabrication and characterisation facility

Studying at Cambridge

 

Characterisation

Lakeshore CPX-HF Probe Station

A versatile, table-top cryogenic micromanipulated probe station used for non-destructive testing of devices on full / partial wafers. The probe-station may be used as a platform for measurement of electrical, electro-optical, parametric, DC, RF, and microwave properties of materials and test devices. The station is configured with up to four micro-manipulated probe arms, each providing precise 3-axis control of the probe position to accurately land the probe tip on the device features. The probe station also allows for optical access through to the sample stage which helps facilitate optical imaging and other transmission experiments.

The station operates over a temperature range of 4.2 K to 475 K and provides for an efficient temperature operation and control with a continuous refrigeration system using either liquid helium or liquid nitrogen. A control heater allows precise sample stage temperature control, and along with the radiation shield heater, provides the probe station with fast thermal response. The station also comes with an integrated vacuum system that comprises of a turbo vacuum pump capable for pumping down the pressure within the chamber to just under 5 μTorr enabling low-pressure experimentation.

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Malvern Nano-ZS Zetasizer

The Zetasizer Nano ZS is the top of the Zetasizer range and is particularly suitable where there are a wide range of applications and the highest performance is required.

It includes 2 angle size measurement for the enhanced detection of aggregates, measurement of small or dilute samples, or at high concentration, zeta potential and electrophoretic mobility measurement, plus molecular size and molecular weight measurement. The system can be connected to an GPC / SEC system to use as a chromatography detector.

  • Size measurement from 0.3nm (diameter) to 10 microns using patented NIBS (Non-Invasive Back Scatter) technology
  • Zeta potential of proteins and particles from 3.8nm up to 100 microns (diameter) using patented M3-PALS technology
  • Molecular weight measurement down to 980Da
  • Sample concentrations from 0.1ppm to 40%w/v
  • Protein size measurement as dilute as 0.1mg/mL (Lysozyme)
  • A Quality Factor gives confidence in the data
  • The Expert advice report gives help to improve sample preparation or the measurement procedure
  • 21CFR part 11 software option enables compliance with ER/ES
  • Research software option gives access to further features and analysis algorithms for the light scattering specialist
  • Automation of measurements using an autotitrator option
  • Flow mode capability to enable use as a GPC / SEC detector
  • Alternative laser, 50mW at 532nm for samples incompatible with the standard 633nm laser fitted
  • Optical filter option to improve measurements with fluorescent sample
  • Temperature range extension option to 120ºC
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