THz Near-Field Nanoscopy: Improving Stability

Add to your list(s) Download to your calendar using vCal

• Nikita Almond
• Wednesday 02 May 2018, 14:00-15:00
• Mott Seminar Room (Mott Building Room 531), Cavendish Laboratory.

If you have a question about this talk, please contact Dr Kaveh Delfanazari.

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 electronic excitations and rotational and vibrational modes in certain molecules. THz applications include spectroscopy, astronomy, communication and imaging. Near-field nanoscopy allows below the diffraction limit imaging (50 um at 3 THz) to investigate THz properties of samples sub 100 nm. This talk discusses results taken to date with our room temperature THz s-SNOM and the improvements that have been made to improve the stability and noise of the images, meaning it is now capable of imaging sub-20nm features topographically. So far it has only been possible to investigate samples at room temperature and the aim is to adapt current system to work cryogenically at 4.2 K, which will allow investigations of low dimensional quantum objects.

This talk is part of the Semiconductor Physics Group Seminars series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Mott Seminar Room (Mott Building Room 531), Cavendish Laboratory
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• School of Physical Sciences
• Semiconductor Physics Group Seminars
• Thin Film Magnetic Talks

Note that ex-directory lists are not shown.