Two recent news stories by Robert Service (“Next-generation technology hits an early midlife crisis,” 24 Oct., News Focus, p. 556; “Nanodevices make fresh strides toward reality,” 21 Nov., News of the Week, p. 1310) provide the impression that the field of molecular electronics stalled and then suddenly revived. The specific contributions described in the 21 Nov. news story are just two of a large number of breakthroughs that have been reported by many research groups over the past several years. Progress in the field has been continuous and is accelerating dramatically.
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Heath et al. (2004) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: