Mixtures of fibers and solid particles are effective for curing fluid losses and lost circulation in a subterranean well. Each group of pictures includes one or more I-frames and a plurality of B- or P-frames. In a normal readwrite operation, by address data designating a word line, one of the cell arrays is selected, and also one block is selected in the selected cell array, and further one word line is selected in the selected block. A polymer or a further metallization is present in the recess. Each of the digital counters are configured to count output pulses generated by a respective SPAD region.