Restricted use of hazardous environmental chemicals is one important challenge that the semiconductor industry needs to face to improve its *** threshold switching(OTS)ternary compound materials used in memory selecto...
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Restricted use of hazardous environmental chemicals is one important challenge that the semiconductor industry needs to face to improve its *** threshold switching(OTS)ternary compound materials used in memory selector devices contain As and *** these elements out of these materials requires significant research *** facilitate this process,we performed systematic material screening for As/Se-free ternary materials,based on ab-initio *** limit the large amount of possible chemical compositions to fewer promising candidates,we used physics-based material parameter filters like material stability,electronic properties,or change in *** OTS gauge concept is introduced as a computed parameter to estimate the probability of a material to show an OTS *** a result,we identified 35 As/Se-free ternary alloy compositions for stand-alone OTS memory applications,as well as 12 compositions for RRAM selector *** work aims seeding the development of As/Se-free OTS materials.
In order to ensure precision fit between steel sleeve and plunger, copper sleeve and the other parts of the ultra high pressure plunger pump, as well as increase the fatigue life of steel sleeve, this paper made the a...
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This study presents a low-noise,high-rate front-end readout application-specific integrated circuit(ASIC)designed for the electromagnetic calorimeter(ECAL)of the Super Tau-Charm Facility(STCF).To address the high back...
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This study presents a low-noise,high-rate front-end readout application-specific integrated circuit(ASIC)designed for the electromagnetic calorimeter(ECAL)of the Super Tau-Charm Facility(STCF).To address the high background-count rate in the STCF ECAL,the temporal features of signals are analyzed node-by-node along the chain of the analog front-end ***,the system is optimized to mitigate the pile-up effects and elevate the count rate to megahertz ***,a charge-sensitive amplifier(CSA)with a fast reset path is developed,enabling quick resetting when the output reaches the maximum *** prevents the CSA from entering a pulse-dead zone owing to amplifier saturation caused by the ***,a high-order shaper with baseline holder circuits is improved to enhance the anti-pile-up capability while maintaining an effective noise-filtering ***,a high-speed peak-detection and hold circuit with an asynchronous first-input-first-output buffer function is proposed to hold and read the piled-up signals of the *** ASIC is designed and manufactured using a standard commercial 1P6M 0.18μm mixed-signal CMOS process with a chip area of 2.4 mm×1.6 *** measurement results demonstrate a dynamic range of 4–500 fC with a nonlinearity error below 1.5%.For periodically distributed input signals,a count rate of 1.5 MHz/Ch is achieved with a peak time of 360 ns,resulting in an equivalent noise charge(ENC)of 2500 e^(-)-.The maximum count rate is 4 MHz/Ch at a peak time of 120 *** a peak time of 1.68μs with a 270 pF external capacitance,the minimum ENC is 1966 e^(-)-,and the noise slope is 3.08 e^(-)-∕*** timing resolution is better than 125 ps at an input charge of 200 *** power consumption is 35 mW/Ch.
New configuration of Virtual Cathode Oscillator (VCO) has been studied for the generation of High Power Microwaves through simulation and experiments. Critical parameters such as sheet transparency and voltage variati...
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Using token representation from bidirectional language models (LMs) such as BERT is still a widely used approach for token-classification tasks. Even though there exist much larger unidirectional LMs such as Llama-2, ...
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The arc-shaped corrugated diaphragm is the packaging component of pressure sensors, and the quality of diaphragms directly affects the performance of pressure sensors. Diaphragms are usually produced by blanking proce...
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Dual-comb spectroscopy(DCS)with few-GHz tooth spacing that provides a better trade-off between spectral resolution and refresh rate is a powerful tool for measuring and analyzing rapidly evolving transient *** such an...
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Dual-comb spectroscopy(DCS)with few-GHz tooth spacing that provides a better trade-off between spectral resolution and refresh rate is a powerful tool for measuring and analyzing rapidly evolving transient *** such an exciting opportunity,existing technologies compromise either the spectral resolution or refresh rate,leaving few-GHz DCS with robust design largely unmet for frontier *** this work,we demonstrate a novel GHz DCS by exploring the multimode interference-mediated spectral filtering effect in an all-fiber ultrashort cavity *** GHz single-cavity all-fiber dual-comb source is seeded by a dual-wavelength mode-locked fiber laser operating at fundamental repetition rates of about 1.0 GHz differing by 148 kHz,which has an excellent stability in the free-running state that the Allan deviation is only 101.7 mHz for an average time of 1 *** to the large repetition rate difference between the asynchronous dichromatic pulse trains,the GHz DCS enables a refresh time as short as 6.75 μs,making it promising for studying nonrepeatable transient phenomena in real *** this end,the practicality of the present GHz DCS is validated by successfully capturing the'shock waves'of balloon and firecracker explosions *** GHz single-cavity all-fiber dual-comb system promises a noteworthy improvement in acquisition speed and reliability without sacrificing measurement accuracy,anticipated as a practical tool for high-speed applications.
A new trajectory design method of the air-launched rocket is presented in this paper. A dynamic model of the air-launched rocket is built. In order to make efficient use of aerodynamic force in the acceleration proces...
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The estimation of state of charge(SOC)in lithium-ion batteries is important for ensuring the safe and stable operation of battery *** high-rate pulse conditions,the characteristics of short discharge time,high frequen...
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The estimation of state of charge(SOC)in lithium-ion batteries is important for ensuring the safe and stable operation of battery *** high-rate pulse conditions,the characteristics of short discharge time,high frequency,large current,strong interference,and complex transient characteristics that make lithium-ion batteries exhibit marked nonlinear *** existing battery management system has difficulties in capturing the rising and falling edge data of the pulses due to limitations in the sampling *** short idle time makes it challenging to obtain accurate open-circuit voltage,and there are difficulties in identifying the model ***,using a combination of coulomb counting method,open-circuit voltage correction method,and Kalman filtering method to estimate SOC poses certain *** study applies backpropagation neural network(BPNN)combined with Aquila optimizer(AO)algorithm to estimate SOC under high-rate pulse conditions,and experimental verification is performed using special 3-Ah lithium iron phosphate *** compared the estimation accuracy of the AO-BPNN model for SOC with the BPNN,support vector machine,extreme learning machine,and Fuzzy neural network models and verified the superiority of ***,by utilizing data with larger acquisition intervals,we obtained accurate evaluation results and reduced the data *** effectiveness of the assessment of AO-BPNN was individually verified under different high-rate pulse conditions and different static times through pulse experiments conducted under 9 operating conditions,with the estimation error controlled within 5%.Finally,the robustness of the proposed model was validated using test data with different sampling intervals and random measurement errors.
Decentralized exchanges (DEXs) have emerged as a promising solution to enhance trustlessness in blockchain ecosystems and mitigate security threats associated with centralized exchanges. While platforms like Uniswap o...
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