Publications by authors named "S S Keene"

Conjugated polymers (CPs) with polar side chains can conduct electronic and ionic charges simultaneously, making them promising for bioelectronics, electrocatalysis and energy storage. Recent work showed that adding alkyl spacers between CP backbones and polar side chains improved electronic charge carrier mobility, reduced swelling and enhanced stability, without compromising ion transport. However, how alkyl spacers impact polymer backbone conformation and, subsequently, electronic properties remain unclear.

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Iron homoeostasis is tightly regulated, with hepcidin and soluble transferrin receptor (sTfR) playing significant roles. However, the genetic determinants of these traits and the biomedical consequences of iron homoeostasis variation are unclear. In a meta-analysis of 12 cohorts involving 91,675 participants, we found 43 genomic loci associated with either hepcidin or sTfR concentration, of which 15 previously unreported.

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Article Synopsis
  • Pneumonia, influenza, and COVID-19 can increase the risk of blood clots due to inflammation affecting the thrombotic system, but long-term risks post-hospitalization remain unclear.
  • The study analyzed health data from adults in Wales to assess the incidence of arterial and venous thrombosis after hospitalizations due to COVID-19 and compared it with rates after pneumonia or influenza hospitalizations.
  • Results indicated heightened risk for arterial thrombosis shortly after COVID-19 hospitalization, with adjusted hazard ratios showing a significant decrease in risk over time, but still elevated compared to individuals without COVID-19 hospitalizations.
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The transient behavior of organic electrochemical transistors (OECTs) is complex due to mixed ionic-electronic properties that play a central role in bioelectronics and neuromorphic applications. Some works applied impedance spectroscopy in OECTs for understanding transport properties and the frequency-dependent response of devices. The transversal admittance (drain current vs gate voltage) is used for sensing applications.

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  • Active optical metasurfaces use flexible materials to manipulate light in new ways, allowing for innovative human-technology interactions.
  • Researchers developed soft metasurfaces that change shape through the swelling of conducting polymers, improving upon traditional methods that face trade-offs between tuning ability and optical loss.
  • Using a specific polymer, PEDOT:PSS, they achieved dynamic color tuning and efficient beam steering while operating at low voltages, making these metasurfaces promising for wearable technology.
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