Tag: Biomedical Engineering
Single-fiber probe enables closed-loop tumor photothermal therapy
What the study found A single-fiber, multifunctional fiber-optic theranostic probe was developed for closed-loop tumor photothermal therapy. It combines tumor edge identification, treatment, and real-time feedback in one tapered optical fiber. Why the authors say this matters The authors say this approach addresses limited light penetration depth and the systemic toxicity of nanomaterials. They also…
PAAm@PPy hydrogels combine stretchability, conductivity, and low hysteresis
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in EngineeringWhat the study found The study found that a two-step composite hydrogel design can separate mechanical and electrical optimization in a strain-sensing material. The resulting PAAm@PPy hydrogel combined soft-tissue-like stiffness, high stretchability, low mechanical hysteresis, and electrical conductivity. Why the authors say this matters The authors say the work establishes a conductive hydrogel design paradigm…
Matched data pairs affect win ratio patterns and intervals
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in EngineeringWhat the study found The study found that as the number of matched data pairs increases, the win ratio statistic and its 95% confidence intervals change, but not consistently. The authors report that the confidence interval limits tend to move closer together, and that the count of win ratio values above one is not affected…
Closed-loop control improved facial prosthesis actuation in reinforced DEAs
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in EngineeringWhat the study found A model-based closed-loop controller for reinforced dielectric elastomer actuators was able to improve actuation performance for a facial prosthesis. The designed prosthesis showed a root mean square error of 2.06% in response to electromyography signals from the zygomaticus major muscle, which is responsible for smiling. Why the authors say this matters…
Soft actuators may benefit from human-like control mechanisms
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in EngineeringWhat the study found Soft actuators have not yet been controlled in ways that fully use their viscoelastic properties, and the authors report that they share key mechanical characteristics with human muscles. The study links these similarities to computational mechanisms in the human nervous system that may support more effective control. What the authors say…
Dual-network hydrogel ionic diode shows high current rectification
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in EngineeringWhat the study found The study reports a dual-network hydrogel-based ionic diode that achieved a very high current rectification ratio of 53.9. The hydrogel combines polyvinyl alcohol and polyacrylamide matrices with cationic polydiallyldimethylammonium and anionic poly(sodium 4-styrenesulfonate) polyelectrolytes. Why the authors say this matters The authors say ionic diodes are of interest for flexible electronics…
Microvascular health varied across advanced heart failure treatments
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in EngineeringWhat the study found The study found that microcirculatory dysfunction, meaning impaired small-vessel blood flow, varies across advanced heart failure and its treatments. It was most severe in patients resuscitated from cardiogenic shock and in heart transplant recipients. Why the authors say this matters The authors conclude that restoring large-scale blood flow, or macrohemodynamics, does…
Toggled magnetic fields drive continual restructuring of ribbonlike colloids
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in EngineeringWhat the study found Ribbonlike aggregates formed in paramagnetic colloidal suspensions showed ongoing dynamic instabilities when an external field was toggled on and off. These instabilities included spontaneous emission of small aggregates, merging, and splitting, and they increased total motion in the suspension. Why the authors say this matters The authors suggest that the dynamic…
Review compares liver-on-a-chip models for drug development
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in EngineeringReview of liver-on-a-chip models comparing academic and commercial platforms, examining designs, cellular compositions, and potential to reduce drug development costs and animal testing.
