Abstract: A low-cost voltammetric analysis system using a mobile computing device having a microprocessor, a memory and an audio interface. The audio interface comprises an audio signal output having first and second channels and an audio signal input. The interface is connectible to a voltammetric cell comprising first and second electrodes, and the memory of the device contains instructions which, when executed by the microprocessor, cause the device to: generate an output voltage waveform between the first and second channels of the audio signal output, the output voltage waveform comprising a time-varying voltammetric driving potential and an AC perturbation; simultaneously with generating the output voltage waveform, capture an input voltage waveform received at the audio signal input; and record the input voltage waveform as a voltammetric response waveform within a data store.

Abstract: A low-cost voltammetric analysis system using a mobile computing device having a microprocessor, a memory and an audio interface. The audio interface comprises an audio signal output having first and second channels and an audio signal input. The interface is connectible to a voltammetric cell comprising first and second electrodes, and the memory of the device contains instructions which, when executed by the microprocessor, cause the device to: generate an output voltage waveform between the first and second channels of the audio signal output, the output voltage waveform comprising a time-varying voltammetric driving potential and an AC perturbation; simultaneously with generating the output voltage waveform, capture an input voltage waveform received at the audio signal input; and record the input voltage waveform as a voltammetric response waveform within a data store.

Abstract: A method of refurbishing a bearing is disclosed. The method includes providing a bearing having a tube structure and inner and outer surfaces. The bearing is mounted onto a mounting unit and a cladding head of a laser cladding unit is positioned within a bore of the bearing. The cladding head forms laser cladding layers disposed on the inner surface of the bearing. The cladding layers increase a thickness of the bearing and reduce an internal diameter of the bearing.