A paper published in Advanced Materials reports work on using fluorescent nanodiamonds for imaging ion concentration and voltage, according to its title. The relevance to consciousness research lies in the fact that ion gradients and voltage dynamics are central to bioelectric signaling in neurons and other cells, making new imaging tools for these quantities of potential interest to anyone studying the neural substrates of conscious states.
What the paper actually found, how it was conducted, and what its results show cannot be determined. No abstract was available for review, and the sole basis for the claim that fluorescent nanodiamonds can serve as ion and voltage sensors is the title itself. No methodology, no data, no experimental conditions, and no conclusions can be confirmed or evaluated from the information at hand.
The venue, Advanced Materials, is peer-reviewed, which indicates some editorial scrutiny took place. That fact alone, however, cannot substitute for an assessable abstract or full text. It is not possible to judge sensitivity, specificity, physiological applicability, or whether any reported signals reflect the proposed sensing mechanism rather than confounds.
Readers interested in this line of work should obtain the full paper before drawing any conclusions about what fluorescent nanodiamonds can or cannot do in biological imaging contexts. The connection to consciousness research remains entirely indirect and speculative at this stage of available information.
Source: https://doi.org/10.1002/adma.74728