Neutron reflection (NR) is well established for studying molecular films such as lipid monolayers. Its high depth resolution combined with deuterium labelling can determine the amount and location of binding of antimicrobial peptides (AMPs). By unravelling how AMPs interact with model lipopolysaccharide (LPS) membranes NR can help us to develop strain-specific AMPs to target at Gram-negative bacteria whilst tuning their biocompatibility to mammalian cell hosts. we request 3 days on INTER or 4 days of Surf to complete this work. Inter is preferred due to weak but measurable signals from h-lipid-h-peptide in NRW.