This work aims to exploit the unique capability of neutron reflection to examine how 2 antimicrobial lipopeptides that tend to adopt different secondary structures bind to model lipid membranes. Such structural features are sparsely available but are crucial to understanding how different antimicrobial peptides kill different microorganisms through membrane disruptions. Neutron reflection is about the only technique that can unravel the structural features that help us to distinguish the two antimicrobial peptides and link such structural information to antimicrobial behaviour. We request 4 days on Surf to complete this work.