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Newspaper is known to turn yellow over time. We show here that this yellowing process is sensitive to oxygen when ex-posed to UV light, leading to oxygen sensing. Oxygen sensing is critical to many applications, including industrial process control and breath analysis, but the existing oxygen sensors have limitations, especially for breath analysis that operates at 100% humidity. The UV irradiation also triggers fluorescence emission from newspaper, and the fluorescence intensity depends on oxygen concentration, providing an additional oxygen sensing method. Newspaper is stable in ambient air, and reactive to oxygen only with UV activation, which overcomes the instability issue of a typical colorimetric sensor in ambient air. The newspaper oxygen sensor works in 100% relative humidity air, containing various interferents. These unique properties of newspaper promise low cost and reliable oxygen sensing applications.
This article was published in the following journal.
Name: ACS sensors
Mulberry-shaped tin oxide (SnO) hierarchical architectures and samarium oxide (SmO) loaded tin oxide with different amounts (0.5, 1, 2.5, and 4 mol% SmO) were successfully synthesized by facile hydr...
The cation substitutional doping of metal-oxide semiconductors plays pivotal roles in improving the gas sensing performances, but the doping effect on surface sensing reaction is still not well unders...
Formation of the neutral flavin radical in the light-oxygen-voltage-sensing (LOV-sensing) domain of photozipper (PZ), based on VfAUREO1, was investigated by electron paramagnetic resonance (EPR) spect...
This article investigates the 1918-1919 influenza epidemic in Coimbra using information found in the pages of a local newspaper. Rigorous and systematic analysis of the Gazeta de Coimbra reveals the u...
Oxygen (O2) sensors are needed for monitoring environment and human health. O2 sensing at low temperature is required, but studies are lacking. Here we report, for the first time, that the performance...
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The objective of this study is two fold, first to explore the potential of context sensitive intervention delivery to provide in-situ support for people with depressive symptoms, second to...
To evaluate changes in activity based on the use of portable oxygen concentrators combined with standard of care (SOC) long- term oxygen therapy versus SOC long-term oxygen therapy alone a...
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Work consisting of a news item appearing in a general-interest newspaper or other general news periodical, containing information of current and timely interest in the field of medicine or science. This publication type should not be confused with NEWS Publication Type, reserved for news reports published in various medical or other scientific journals, such as "Nature".
Measurement of the regional temperature of the body or an organ by infrared sensing devices, based on self-emanating infrared radiation.
A class of G-protein-coupled receptors that react to varying extracellular CALCIUM levels. Calcium-sensing receptors in the PARATHYROID GLANDS play an important role in the maintenance of calcium HOMEOSTASIS by regulating the release of PARATHYROID HORMONE. They differ from INTRACELLULAR CALCIUM-SENSING PROTEINS which sense intracellular calcium levels.
Process whereby a cell, bodily structure, or organism (animal or plant) receives or detects a gravity stimulus. Gravity sensing plays an important role in the directional growth and development of an organism (GRAVITROPISM).
The rate at which oxygen is used by a tissue; microliters of oxygen STPD used per milligram of tissue per hour; the rate at which oxygen enters the blood from alveolar gas, equal in the steady state to the consumption of oxygen by tissue metabolism throughout the body. (Stedman, 25th ed, p346)
Asthma COPD Cystic Fibrosis Pneumonia Pulmonary Medicine Respiratory Respiratory tract infections (RTIs) are any infection of the sinuses, throat, airways or lungs. They're usually caused by viruses, but they can also ...