Given the ever increasing, global electricity consumption, improving the efficiency and reliability of high-power electronics is of paramount importance. Ultra-wide band gap (> 3.4 eV) semiconductors have shown the...
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The power of controlling objects with mind has captivated a popular fascination to human *** possible path is to employ brain signal collecting technologies together with emerging programmable metasurfaces(PM),whose f...
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The power of controlling objects with mind has captivated a popular fascination to human *** possible path is to employ brain signal collecting technologies together with emerging programmable metasurfaces(PM),whose functions or operating modes can be switched or customized via on-site programming or pre-defined ***,most of existing PMs are wire-connected to users,manually-controlled and not ***,we propose the concept of remotely mind-controlled metasurface(RMCM)via *** than DC voltage from power supply or AC voltages from signal generators,the metasurface is controlled by brainwaves collected in real time and transmitted wirelessly from the *** an example,we demonstrated a RMCM whose scattering pattern can be altered dynamically according to the user’s brain waves via *** attention intensity information is extracted as the control signal and a mapping between attention intensity and scattering pattern of the metasurface is *** such a framework,we experimentally demonstrated and verified a prototype of such metasurface system which can be remotely controlled by the user to modify its scattering *** work paves a new way to intelligent metasurfaces and may find applications in health monitoring,5G/6G communications,smart sensors,etc.
Aspect-based Sentiment Analysis (ABSA) evaluates sentiments toward specific aspects of entities within the text. However, attention mechanisms and neural network models struggle with syntactic constraints. The quadrat...
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Miniaturized microscopes for monitoring neural activity are an indispensable tool for neuroscience research. We present a novel MEMS based miniature microscope with patterned optogenetic stimulation capabilities enabl...
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This paper proposes a low-cost interface and refined digital twin for the Raven-II surgical robot. Previous simulations of the Raven-II, e.g. via the Asynchronous Multibody Framework (AMBF), presented salient drawback...
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ISBN:
(数字)9798350377118
ISBN:
(纸本)9798350377125
This paper proposes a low-cost interface and refined digital twin for the Raven-II surgical robot. Previous simulations of the Raven-II, e.g. via the Asynchronous Multibody Framework (AMBF), presented salient drawbacks, including control inputs inconsistent with Raven-II software, and lack of stable, high-fidelity physical contact simulations. This work bridges both of these gaps, both (1) enabling robust, simulated contact mechanics for dynamic physical interactions with the Raven-II, and (2) developing a universal input format for both simulated and physical platforms. The method furthermore proposes a low cost, commodity game-controller interface for controlling both virtual and real realizations of Raven-II, thus greatly reducing the barrier to access for Raven-II research and collaboration. Overall, this work aims to eliminate the inconsistencies between simulated and real representations of the Raven-II. Such a development can expand the reach of surgical robotics research. Namely, providing end-to-end transparency between the simulated AMBF and physical Raven-II platforms enables a software testbed previously unavailable, e.g. for training real surgeons, for creating digital synthetic datasets, or for prototyping novel architectures like shared control strategies. Experiments validate this transparency by comparing joint trajectories between digital twin and physical testbed given identical inputs. This work may be extended and incorporated into recent efforts in developing modular or common software infrastructures for both simulation and control of real robotic devices, such as the Collaborative Robotics Toolkit (CRTK).
Monitoring flowers over time is essential for precision robotic pollination in agriculture. To accomplish this, a continuous spatial-temporal observation of plant growth can be done using stationary RGB-D cameras. How...
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In this study, we investigated the electrical and structural properties of metal-oxide-semiconductor capacitors (MOSCAPs) with in-situ metal-organic chemical vapor deposition (MOCVD)-grown Al2O3 dielectrics deposited ...
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In this study, we investigated the electrical and structural properties of metal-oxide-semiconductor capacitors (MOSCAPs) with in-situ metal-organic chemical vapor deposition (MOCVD)-grown Al2O3 dielectrics deposited at varying temperatures on (010) β-Ga2O3 and β-(AlxGa1-x)2O3 films with different Al compositions. The Al2O3/β-Ga2O3 MOSCAPs demonstrated a significant impact of Al2O3 deposition temperature on their electrical properties as characterized by capacitance-voltage (C-V) and current-voltage (I-V) measurements. Higher deposition temperatures (900 °C) resulted in reduced voltage hysteresis (~0.3 V) and improved reverse breakdown voltage of 74.5 V with a corresponding parallel-plate electric field of EBr, Al2O3 = 5.01 MV/cm and EBr, Ga2O3 = 4.11 MV/cm under reverse bias. In contrast, lower deposition temperatures (650 °C) yielded higher voltage hysteresis (~3.44 V) and lower reverse breakdown voltage (VBr = 38.8 V with EBr, Al2O3 = 3.69 MV/cm and EBr, Ga2O3 = 2.87 MV/cm), but exhibited superior forward breakdown fields, increasing from 5.62 MV/cm at 900 °C to 7.25 MV/cm at 650 °C. High-resolution scanning transmission electron microscopy (STEM) imaging revealed a strong correlation between the deposition temperature of Al2O3 and its crystallinity. At 900 °C, Al2O3 exhibited larger crystalline regions and sharper interfaces as compared to 650 °C, contributing to improved reverse breakdown fields. For Al2O3/β-(AlxGa1-x)2O3 MOSCAPs, increasing Al composition from x = 5.5% to x = 9.2% resulted in a reduction in net carrier concentration with enhanced reverse breakdown fields, from EBr, (AlxGa1-x)2O3 = 2.55 MV/cm to 2.90 MV/cm. The reverse breakdown electric field in the Al2O3 dielectric also increased from EBr, Al2O3 = 2.41 MV/cm to 3.13 MV/cm as the Al composition increases from 5.5% to 9.2%. Forward breakdown fields of the Al2O3/β-(AlxGa1-x)2O3 MOSCAPs increased from EBr, Al2O3 = 5 MV/cm to 5.4 MV/cm with the increase of Al composition from 5.5% to 9.2%, respect
Neuropeptides configure the feeding network of Aplysia. For example, egestive activity is promoted by small cardioactive peptide (SCP), and ingestive activity is promoted by a combination of feeding circuit activating...
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Depressive Disorders (DD) is one of the most prevalent mental disorders in the world that may lead to suicide cases. To prevent the latter, ubiquitous early detection systems may be effective. Recent studies have sinc...
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The rapid proliferation of Internet of Things (IoT) devices has posed significant challenges for network resource allocation and management. In this paper, we propose a novel methodology for efficient resource allocat...
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