You can assemble a pulse-generation circuit from a simple Schmitt-input AND gate plus a resistor-capacitor timing network. However, if you need a logic function that's not a standard catalog item, you ...

Both inputs of N1 are connected to each other, so when input P is HIGH, output is zero. This logic zero is passed on to N2, at initial state of zero on the input 6, output 4 is logic one. This means ...

DNA-based nanotechnology has been around for more than 30 years, but it really took off in 2006, when DNA origami was featured on the cover of Nature. This form of origami, the folding of DNA into 2D ...