A brake system for a towed and towing vehicle combination allowing for application of the brakes of the towed vehicle in proportion to application of the brakes of the towing vehicle. The method of manufacturing a nanowire includes forming a sandwich structure of SiX material and material Si over a substrate and etching the sandwich structure to expose sidewalls of the Si material and the SiX material. The composite negative electrode active material contains carbon nanofibers, a catalyst element, and silicon-containing particles capable of charging and discharging at least lithium ions. The measuring apparatus further has at least one position sensor to determine the position of the magnetic sample, an electromagnet to exert a magnetic force on the magnetic sample, and a control device for the electromagnet which is connected signal-wise to the position sensor. Because the heat buffer block is coupled to the blocks of the fuse layer, new fusing point and a new path for effectively dissipating the heat are provided and a longer and sinuous electric current path is obtained between the blocks through the heat buffer blocks.