The Cold Neutron Depth Profiling (CNDP) instrument at the NIST Cold Neutron Research Facility (CNRF) is now operational. The neutron beam originates from a 16 L D2O ice cold source and passes through a filter of 135 mm of single crystal sapphire. The neutron energy spectrum may be described by a 65 K Maxwellian distribution. The sample chamber configuration allows for remote controlled scanning...

The melanins are a class of natural pigments ubiquitous throughout the biosphere. These gaining significant attention as advanced materials due to their biocompatibility, optical and electrical properties. most common form melanin, eumelanin, has well-known problem insolubility in solvents. made standard chemical analysis challenging, leading researchers opting use X-Ray photoelectron spectrosc...