RSANS

Rotational Small-Angle Neutron Scattering, or RSANS, is a small-angle scattering technique where a single sample is measured multiple times at different angles. That is, the sample is rotated between scans. By doing so, successive 2D slices from the 3D reciprocal-space are collected. These slices can thus be used to recover the full reciprocal-space, or a slice through this space not available in a single scan. In this sense, it is a reciprocal-space mapping method.

RSANS has been applied in a mode similar to CD-SAXS: that is, to study a nanostructured thin film, and recover the q_x-q_z slice of reciprocal space using a transmission-mode measurement. I.e. to measure both in-plane (q_x) and out-of-plane/film-normal (q_x) information. In this sense, it collects data similar to a GISAXS/GISANS experiment.

See Also

• Kevin G. Yager, Brian C. Berry, Kirt Page, Derek Patton, Alamgir Karim and Eric J. Amis Disordered nanoparticle interfaces for directed self-assembly Soft Matter 2009, 5, 622-628. doi: 10.1039/B813970A
• Manish M. Kulkarni, Kevin G. Yager, Ashutosh Sharma, and Alamgir Karim Combinatorial Block Copolymer Ordering on Tunable Rough Substrates Macromolecules 2012, 45 (10), 4303-4314. doi: 10.1021/ma300169a
• Xiaohua Zhang, Jack F. Douglas, Sushil Satijac and Alamgir Karim Enhanced vertical ordering of block copolymer films by tuning molecular mass RSC Advances 2015, 5, 32307-32318. 10.1039/C5RA02047F doi: 10.1039/C5RA02047F
• Kevin G. Yager, Christopher Forrey, Gurpreet Singh, Sushil K. Satija, Kirt A. Page, Derek L. Patton, Jack F. Douglas, Ronald L. Jones and Alamgir Karim Thermally-induced transition of lamellae orientation in block-copolymer films on ‘neutral’ nanoparticle-coated substrates Soft Matter 2015 doi: 10.1039/C5SM00896D