This paper presents the design and simulation analysis of a tunable optical integrator based on ZnS-SiO2/Ge2Sb2Te5 superlattice (GST-SL) phase change material (PCM). The transfer function of the integrator is realized...
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QRNGs, which leverage quantum mechanical principles to generate random numbers, are widely utilized in information security and cryptography. This paper reviews various QRNG systems and their evolution, with a particu...
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Predictive Maintenance (PdM) aims to ensure the continuous operation of high-risk industrial systems. This challenge is especially critical in environments where equipment failure can cause major financial losses and ...
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Recent progress in open-source object detection techniques has significantly advanced Multi-Object Tracking (MOT) methodologies, primarily under the tracking-by-detection paradigm. To enhance the robustness and reliab...
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This paper proposes a demodulation method for GaAs fiber-optic flow velocity sensors based on convolution operations. The method employs a five-layer wavelet forced denoising technique to smooth the acquired spectral ...
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The rising cost of robotic platforms has created significant challenges for engineering students and academic institutions. High prices often make these platforms unaffordable for students, limiting their access to ha...
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Reconfigurable photodetectors are crucial for applications such as adaptive sensing and dynamic imaging. However, conventional devices based on materials such as silicon typically require external electric fields and ...
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Reconfigurable photodetectors are crucial for applications such as adaptive sensing and dynamic imaging. However, conventional devices based on materials such as silicon typically require external electric fields and additional memory units, resulting in increased system complexity and energy consumption. Here, a self-driven, reconfigurable, and controllable photoresponse with a large responsivity contrast of up to 100 is achieved using a Ge2Sb2Te5 (GST)/MoS2 heterojunction, leveraging the integration of the reversible phase-transition capability of phase-change materials (PCMs) with the nonvolatile reconfigurable optoelectronic merits of two-dimensional (2D) materials. The reconfigurable GST/MoS2 heterojunction photodetector also demonstrates fast response times, excellent cycling stability, and a linear photocurrent-power relationship, supporting its use in real-time imaging systems. Furthermore, a 3 x 3 reconfigurable photodetector array is implemented as an optical convolution kernel for in-sensor image processing, achieving high-quality image recognition, contrast enhancement, and edge detection. This work positions phase-change-2D heterojunctions as a promising platform for next-generation reconfigurable photodetection and intelligent sensing technologies.
Studies on gas trace spectroscopy have intensified considerably in recent years due to the great demand for reliable sensors in the quantification of gas concentrations in various fields, including environmental monit...
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ISBN:
(数字)9781510685130
ISBN:
(纸本)9781510685123;9781510685130
Studies on gas trace spectroscopy have intensified considerably in recent years due to the great demand for reliable sensors in the quantification of gas concentrations in various fields, including environmental monitoring, medical sensors, early fire detection, and security control. Among various approaches, photoacoustic spectroscopy (PAS) is promising due to wavelength independence, zero background, and small investigating volumes. In this context, we report the realization and implementation of a new low-frequency, spring-like Micro Electro Mechanical System (MEMS) acting as a microphone in a PAS setup. The MEMS behaviors were studied experimentally both in amplitude and frequency modulation, analyzing the figures of merit (FOM) of each approach. Finally, a long-term stability analysis is also reported to exploit the ultimate detection limits achievable with each approach.
Light field cameras hold significant value in applications such as depth estimation, 3D video acquisition, and image super-resolution. Compared to traditional single-image super-resolution methods, light field images ...
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This paper examines the safety measures used in sensing unit networks, focusing on their effectiveness in securing critical applications from threats like unapproved access, information violations, and meddling. It as...
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