The Gadget that Makes DNA Sequencing Child’s Play
The MinION costs $1,000 and is the size of a candy bar. It connects to a laptop computer’s USB port. To have it read a DNA sample, you use a micropipette to drop a “DNA library” (more on that in a minute) through a millimeter-sized opening on the MinION. Inside the device are nanopores, cones just over a billionth of a meter wide, placed in a membrane. A steady ion current flows through these nanopores. Since each nucleotide (A, T, C or G) has a unique molecular makeup, each one is shaped a little differently. The unique shape passing through the pore interrupts the ion current in a specific way. Just as we can infer a shape by analyzing its shadow on a wall, we can infer a nucleotide’s identity from the disturbances it causes to the ion current. This is how the device converts bases to bits that stream into a computer.
via https://medium.com/neodotlife/nanopore–6443c81d76d3?source=ifttt————–1