Contents: (Small 23/2015)

and co-workers develop a surface acoustic wave method to manipulate protein crystals for macromolecular crystallography.On page 2733, a capillary tube is coupled onto a piezoelectric substrate with a pair of interdigital transducers.When the transducers are turned on, an acoustic fi eld is generated and introduced into the capillary through a thin layer of coupling gel.The micrometersized protein crystals suspended in the capillary will then be manipulated by the acoustic fi eld and aligned into a linear pattern.