Dear Colleagues,

According to the WHO, diabetes is one of the most prevalent diseases, found in about 8.5% of the global population. Every 7th death can be attributed to it (2016). Diabetes can be treated and its consequences avoided or delayed with diet, physical activity, medication, regular screening, and treatment for complications. A regular accurate determination of blood glucose level is therefore highly desirable.

The gold standard are invasive schemes, where blood samples are tested by amperometric sensing schemes. Minimally invasive schemes such as arm patches have improved in accuracy and gained significant attention thanks to their fairly easy use, which makes them ideally suited for children and the elderly, where ensuring compliance can be difficult.

The ultimate goal, however, are non-invasive sensing schemes, which are more comfortable and have no risk of infection. Furthermore, sensing schemes that allow for continuous glucose monitoring (CGM) and are compact enough to be integrated into wearables, such as smartwatches or smart plasters, are in high demand, as they will overall contribute to a higher quality of living (QoL).

Literature is full of trials that explore new phenomena. However, a lot of new approaches fail in terms of accuracy and suffer from strong cross influences so that there is no chance for medical approval. Nevertheless the ever-growing market of wearables and advancements in microelectronics have created large expectations for CGM wearables that integrate into daily life activities and are not stigmatizing.

This Special Issue calls for contributions on recent advances in non-invasive glucose sensing schemes and sensor implementations. A detailed discussion on underlying phenomena, sensing principles, cross influences, sensitivity, tolerances, and suitability for CGM is encouraged. Submissions should take into account physiologically relevant concentration levels.

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sensors is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• Diabetes non-invasive glucose sensing
• Continuous glucose monitoring—CGM
• Wearables for metabolism sensing
• Quality of living—QoL