Abstract Herein, we firstly develop porous organic cage (POC) as an efficient platform for highly effective radioactive iodine capture under industrial operating conditions (typically ≥150 °C), ≤150 ppmv of I 2 ). Due to the highly dispersed and readily accessible binding sites as well as sufficient accommodating space, the constructed NKPOC‐DT‐(I − ) (NKPOC=Nankai porous organic cage) demonstrates a record‐high I 2 uptake capacity of 48.35 wt % and extraordinary adsorption capacity of unit ionic site (~1.62) at 150 °C and 150 ppmv of I 2 . The I 2 capacity is 3.5, 1.6, and 1.3 times higher than industrial silver‐based adsorbents Ag@MOR and benchmark materials of TGDM and 4F‐iCOF‐TpBpy‐I − under the same conditions. Furthermore, NKPOC‐DT‐(I − )Me exhibits remarkable adsorption kinetics (k 1 =0.013 min −1 ), which is 1.2 and 1.6 times higher than TGDM and 4F‐iCOF‐TpBpy‐I − under the identical conditions. NKPOC‐DT‐(I − )Me thus sets a new benchmark for industrial radioactive I 2 adsorbents. This work not only provides a new insight for effectively enhancing the adsorption capacity of unit functional sites, but also advances POC as an efficient platform for radioiodine capture in industry.
Abstract The rapid development of mixed‐halide perovskites has established a versatile optoelectronic platform owing to their extraordinary physical properties, but there remain challenges toward achieving highly reliable synthesis and performance, in addition, post‐synthesis approaches for tuning their photoluminescence properties after device fabrication remain limited. In this work, an effective approach is reported to leveraging hot electrons generated from plasmonic nanostructures to regulate the optical properties of perovskites. A plasmonic metasurface composed of Au nanoparticles can effectively tailor both photoluminescence and location‐specific phase segregation of mixed‐halide CsPbI 2 Br thin films. The ultrafast transient absorption spectroscopy measurements reveal hot electron injection on the timescale of hundreds of femtoseconds. Photocurrent measurements confirm the hot‐electron‐enhanced photon‐carrier conversion, and in addition, gate‐voltage tuning of phase segregation is observed because of correlated carrier injection and halide migration in the perovskite films. Finally, the characteristics of the gate‐modulated light emission are found to conform to a rectified linear unit function, serving as nonlinear electrical‐to‐optical converters in artificial neural networks. Overall, the hot electron engineering approach demonstrated in this work provides effective location‐specific control of the phase and optical properties of halide perovskites, underscoring the potential of plasmonic metasurfaces for advancing perovskite technologies.
Design is an important factor in the construction of the cultural landscape.For artistically designed websites,design can give the website a good flavor and it can express the quality of information in a way a mirror reflects.Moreover,it is responsible for the creation of a sound public relation and culture atmosphere.It subtly gives web visitors artistic influences and makes them ready to surf the net in a peaceful state of mind.Aesthetic design of art website plays an important role in the reflection of its unique art fully and in helping gain value and even self-esteem.A good aesthetic design can effectively lead people into a metaphysical art world.
Ultrasonic vibration assisted micro end grinding (UAMEG) is a promising processing method for micro parts made of hard and brittle materials. First, the influence of ultrasonic assistance on the mechanism of this processing technology is theoretically analyzed. Then, in order to reveal the effects of ultrasonic vibration and grinding parameters on grinding forces and surface quality, contrast grinding tests of silica glass with and without ultrasonic assistance using micro radial electroplated diamond wheel are conducted. The grinding forces are measured using a three-component dynamometer. The surface characteristics are detected using the scanning electron microscope. The experiment results demonstrate that grinding forces are significantly reduced by introducing ultrasonic vibration into conventional micro end grinding (CMEG) of silica glass; ultrasonic assistance causes inhibiting effect on variation percentages of tangential grinding force with grinding parameters; ductile machining is easier to be achieved and surface quality is obviously improved due to ultrasonic assistance in UAMEG. Therefore, larger grinding depth and feed rate adopted in UAMEG can lead to the improvement of removal rate and machining efficiency compared with CMEG.
Aiming at enhancing the portability of the smart home management, it is an effective way to use the mobile terminal such as the mobile phone to control the smart home remotely. In addition, properly designed application on the mobile phone can give convenience to monitor the smart home as well as improve the user experience. In this paper, after a comprehensive analysis to the functions of the smart home, a related application based on Android is presented using the scheme of modular design. The application has the functions of monitoring the remote data and controlling the appliances in a long distance. Meanwhile, it can also realize the access control. The test of the application shows that it can receive the sensor data timely and make a proper control of the appliances, which means that it has realized the desired targets.
Based on the scientific research project of the oriented system in Xi′an Subway Line 2,we proposed the operation technology,methodology,designed location and information content of the identifier design of the Barrier-free Orientation System by analyzing the mental and physiological disability specialty of the disabled with different disability in the metro and studying their node identifier.This identifier design of Barrier-free Orientation System for the disabled is of considerable referential importance in integrity and presents scientific idea of the subway spatial guiding system.
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