The poor gas selectivity problem has been a long-standing issue for miniaturized chemical-resistor gas *** electronic nose(e-nose)was proposed in the 1980s to tackle the selectivity issue,but it required top-down chem...
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The poor gas selectivity problem has been a long-standing issue for miniaturized chemical-resistor gas *** electronic nose(e-nose)was proposed in the 1980s to tackle the selectivity issue,but it required top-down chemical functionalization processes to deposit multiple functional ***,we report a novel gas-sensing scheme using a single graphene field-effect transistor(GFET)and machine learning to realize gas selectivity under particular conditions by combining the unique properties of the GFET and e-nose *** of using multiple functional materials,the gas-sensing conductivity profiles of a GFET are recorded and decoupled into four distinctive physical properties and projected onto a feature space as 4D output vectors and classified to differentiated target gases by using machine-learning *** single-GFET approach coupled with trained pattern recognition algorithms was able to classify water,methanol,and ethanol vapors with high accuracy quantitatively when they were tested ***,the gas-sensing patterns of methanol were qualitatively distinguished from those of water vapor in a binary mixture condition,suggesting that the proposed scheme is capable of differentiating a gas from the realistic scenario of an ambient environment with background *** such,this work offers a new class of gas-sensing schemes using a single GFET without multiple functional materials toward miniaturized e-noses.
Current robotic minimally invasive surgery (RMIS) platforms provide surgeons with no haptic feedback of the robot's physical interactions. This limitation forces surgeons to rely heavily on visual feedback and can...
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In this paper, we present the modeling, design and characterization of an ultrafast oscillating blade microtome that can stably operate at programmable speeds up to 260 Hz for sectioning soft tissues with high precisi...
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We developed an annotation-free deep learning-assisted segmentation strategy for 3D microscopy images of tissue stained with an H&E analog and show that non-destructive 3D pathology has the potential to enable sup...
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The ASTM standard recommends that the 16 most common types of PAHs are found in petroleum processing activities, the chemical industry and marine loading ports. This research aims to identify and determine the distrib...
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Nanoporous silver was prepared by free corrosion de-alloying of Ag-Al films containing between 25 and 73 at.% Al. The precursor composition had a strong influence on the diameter of the metallic ligaments, pore densit...
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Successful recovery from vascular diseases has relied on the repair of damaged blood vessels (BVs), and most of the current approaches involve the implantation of autologous BVs, which critically suffers from the shor...
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