A STUDY OF A L1NEAR COMPRESSOR WITH A GAS SPRING;LINEAR RESONANCE COMPRESSOR DRIVEN BY A VARIABLE GAPRELUCTANCE LINEAR MOTOR;Method for estimating cargo damage during truck transpoortation;Micro wear tests by using atomic force microscope:relationship between contact area and pull-off force;Relation between friction and plastic deformation examined by using periodic asperity arrays fabricated on an AFM multipurpose cantilever……