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SUMMARY:THz Near-Field Nanoscopy: Improving Stability - Nikita Almond
DTSTART:20180502T130000Z
DTEND:20180502T140000Z
UID:TALK105514@talks.cam.ac.uk
CONTACT:Dr Kaveh Delfanazari
DESCRIPTION:Applications making use of the THz spectrum are growing\, with
  increasing research and interest into the region. It is low energy (0.4 
 – 40 meV\, 30 um-3 mm\, 0.1-10 THz) and can be used for probing electron
 ic excitations and rotational and vibrational modes in certain molecules. 
 THz applications include spectroscopy\, astronomy\, communication and imag
 ing. Near-field nanoscopy allows below the diffraction limit imaging (50 u
 m at 3 THz) to investigate THz properties of samples sub 100 nm. \n     Th
 is talk discusses results taken to date with our room temperature THz s-SN
 OM and the improvements that have been made to improve the stability and n
 oise of the images\, meaning it is now capable of imaging sub-20nm feature
 s topographically. So far it has only been possible to investigate samples
  at room temperature and the aim is to adapt current system to work cryoge
 nically at 4.2 K\, which will allow investigations of low dimensional quan
 tum objects.\n
LOCATION:Mott Seminar Room (Mott Building Room 531)\, Cavendish Laboratory
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