Presponsive smart organic crystalline materials (SOCMs) have emerged as an attractive research topic because of their many advantages, such as well-defined structures, high structural order, and the resulting fast res...
Presponsive smart organic crystalline materials (SOCMs) have emerged as an attractive research topic because of their many advantages, such as well-defined structures, high structural order, and the resulting fast response speeds, as well as high energy conversion efficiency and remarkable dynamic optical/electronic changes or mechanical responses. In this review, we discuss the recent developments in SOCMs based on topochemistry beyond coordination compounds, which include [2 + 2] or [4 + 4] photocycloaddition of anthracene and olefin derivatives as well as 1, 4-addition-polymerization of diacetylenes. The detailed design principles and mechanisms associated with smart behavior, photoresponsive physical and chemical properties (i.e., photochromism, photo fluorochromism, and photodeformation), and structure–property relationships are discussed, along with their advanced applications in exciting fields such as intelligent microrobots, encryption, sensors, photoactuators, data storage, and displays. Finally, we summarize the current developments and discuss the major current challenges and future opportunities in this field. We expect that this review will inspire more innovative research into the development of advanced photoresponsive organic smart crystal materials with fast, accurate, and reversible responses, and promote the further development of smart materials and devices.
Laser powder bed fusion (LPBF) is a potential additive manufacture technology due to its high forming efficiency and precision. This paper focuses on the influence of the interlayer phase angle (laser printing scannin...
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The frequency response of impedance and admittance of a sample or a device can be expressed by a generalized mathematical formula if the low frequency response and high frequency response of the process that may be pr...
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The frequency response of impedance and admittance of a sample or a device can be expressed by a generalized mathematical formula if the low frequency response and high frequency response of the process that may be present is known or can be estimated. This allows the user to determine the time constant for the process, whether in series or in parallel. Based on the above function and properties of series and parallel circuits, a MATLAB APP has been developed to simulate the frequency response of impedance and admittance. The APP allows the user to enter up to two sets of parameters and select the desired circuit layout and generate the complex (imaginary vs real) graphs as well as real and imaginary functions plotted vs frequency. The simulated graphs were compared with the analytical equations for series and parallel arrangements and experimental measurements of combinations of RC and RL circuit elements to confirm the accuracy of the simulations. Because the simulations can be generated for a wider frequency range than the experimental measurements, the simulation can immediately identify whether spurious data is being obtained in the experiments.
Recent advances in machine learning (ML) have expedited materials discovery and design. One significant challenge faced in ML for materials is the expansive combinatorial space of potential materials formed by diverse...
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The study of ultra-high temperature ceramic materials, particularly zirconium diboride (ZrB2), is of significant interest due to their potential applications in extreme environments, such as the aerospace and nuclear ...
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This study investigated the evolutions of the superelasticity and elastocaloric effect of a multi-principal element Ti40Zr10Ni40Co5Cu5 strain glass alloy during 3001 cyclic compressions. The results were compared with...
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Laser powder bed fusion (LPBF) is a potential additive manufacture technology due to its high forming efficiency and precision. This paper focuses on the influence of the interlayer phase angle (laser printing scannin...
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Digital light processing(DLP)-based bioprinting technology has recently aroused considerable concerns as a strategy to deliver biomedical materials and/or specific cells to create sophisticated structures for various ...
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Digital light processing(DLP)-based bioprinting technology has recently aroused considerable concerns as a strategy to deliver biomedical materials and/or specific cells to create sophisticated structures for various tissue modeling and *** this review,we display a concise introduction of DLP bioprinting,and a further discussion on the design and manufacture of DLP(bio)printer with varied bioinks and their biomedical applications toward drug screening,disease modeling,tissue repair,and regenerative ***,the advantages,challenges,and perspectives of the DLP printing platforms are *** is believed that DLP bioprinting will play a decisive role in the field of tissue model and regenerative medicine,mainly due to its time-efficient,higher resolution,and amenability to automation for various tissue needs.
Let B be a sufficiently smooth rigid body (compact set of R3) of arbitrary shape moving in an unbounded Navier-Stokes liquid under the action of prescribed external force, F, and torque, M. We show that if the data ar...
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This paper deals with the feasibility of rare earth (RE) free manganese bismuth (MnBi) permanent magnets as an alternative material in electric vehicle (EV) motor applications and performance evaluation at high temper...
This paper deals with the feasibility of rare earth (RE) free manganese bismuth (MnBi) permanent magnets as an alternative material in electric vehicle (EV) motor applications and performance evaluation at high temperature. Neodymium Iron Boron (NdFeB) permanent magnets are typically used in permanent magnet synchronous machines (PMSMs) for EV applications for achieving high power, high torque density and high efficiency due to high remanent flux density $(\boldsymbol{B}_{\boldsymbol{r}})$ and maximum energy product $(\boldsymbol{BH}_{\boldsymbol{max}})$ . Market dominance of NdFeB is hindered significantly due to the supply chain limitations of rare-earth elements which also have the tendency to experience significant price fluctuations. This has triggered substantial efforts in investigating new, alternative magnetic materials containing rare earth free elements. Although ferrite magnets have been explored as alternative choices in the past, ferrites have inferior magnetic properties compared to the emerging MnBi magnets. In this paper, a finite element-based multi-physics design and optimization framework of a SPM machine is conducted evaluating MnBi and NdFeB magnets including electromagnetic performance at high temperatures with thermal and mechanical validation.
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