But a potentially less expensive and even simpler approach, according to the NIST, NRL and UMD team, might be to use a string of adenine nucleotides as an anchor.

• NIST、NRL和UMD小组通过采用一串腺嘌呤核苷酸作为“锚”将技术更进一步，成本更低，操作更为简便。