We use numerical simulations and analytical techniques to assess the role of local thickness nonuniformity and curvature in the Twyman effect. A flat optic of similar thickness is used as a convenient metric for compa...
Transcranial focused ultrasound is a promising non-invasive method for neuromodulation, particularly for neurodegenerative and psychiatric conditions. However, its use in wearable systems has been limited due to bulky...
The inability to stand and walk is one of the major consequences of spinal cord injury (SCI). Wearable lower limb exoskeletons are emerging as a promising solution to restore mobility after SCI. The ABLE Exoskeleton i...
详细信息
Detailed observations of the velocities of Jovian vortices exist at only one height in the atmosphere, so their vertical structures are poorly understood. This motivates this study that computes stable 3-dimensional, ...
详细信息
Global energy consumption increases year after year, causing the depletion of non-renewable sources. According to the International Energy Agency (IEA), global demand for electrical energy is expected to increase by 3...
详细信息
Goal: This paper introduces a new dataset of a surgical knot-tying task, and a multi-modal deep learning model that achieves comparable performance to expert human raters on this skill assessment task. Methods: Sevent...
详细信息
Carbon micro-and nanoelectrodes fabricated by carbon microelectromechanical systems(carbon MEMS)are increasingly used in various biosensors and supercapacitor *** modification of as-produced carbon electrodes with oxy...
详细信息
Carbon micro-and nanoelectrodes fabricated by carbon microelectromechanical systems(carbon MEMS)are increasingly used in various biosensors and supercapacitor *** modification of as-produced carbon electrodes with oxygen functional groups is sometimes necessary for biofunctionalization or to improve electrochemical ***,conventional surface treatment methods have a limited ability for selective targeting of parts of a surface area for surface modification without using complex photoresist ***,we report microplasma direct writing as a simple,low-cost,and low-power technique for site-selective plasma patterning of carbon MEMS electrodes with oxygen *** microplasma direct writing,a high-voltage source generates a microplasma discharge between a microelectrode tip and a target surface held at atmospheric *** our setup,water vapor acts as an ionic precursor for the carboxylation and hydroxylation of carbon surface *** direct writing increases the oxygen content of an SU-8-derived pyrolytic carbon surface from~3 to 27%while reducing the carbon-to-oxygen ratio from 35 to ***,a microplasma treatment increases the number of carbonyl,carboxylic,and hydroxyl functional groups with the largest increase observed for carboxylic ***,water microplasma direct writing improves the hydrophilicity and the electrochemical performance of carbon electrodes with a contact-angle change from~90°to~20°,a reduction in the anodic peak to cathodic peak separation from 0.5 V to 0.17 V,and a 5-fold increase in specific capacitance from 8.82 mF∙cm−2 to 46.64 mF∙cm^(−2).The plasma direct-writing technology provides an efficient and easy-to-implement method for the selective surface functionalization of carbon MEMS electrodes for electrochemical and biosensor applications.
暂无评论