Yilei Li

ORCID: 0000-0003-1855-0919
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About
Contact & Profiles
Research Areas
  • Radio Frequency Integrated Circuit Design
  • Analog and Mixed-Signal Circuit Design
  • Photonic and Optical Devices
  • CCD and CMOS Imaging Sensors
  • Advanced Neural Network Applications
  • Advancements in PLL and VCO Technologies
  • Computer Graphics and Visualization Techniques
  • 3D Shape Modeling and Analysis
  • Human Pose and Action Recognition
  • Multimodal Machine Learning Applications
  • Advancements in Semiconductor Devices and Circuit Design
  • Advanced Photocatalysis Techniques
  • Advanced Memory and Neural Computing
  • Interconnection Networks and Systems
  • 3D IC and TSV technologies
  • Advanced Sensor and Energy Harvesting Materials
  • Quantum Dots Synthesis And Properties
  • Fatigue and fracture mechanics
  • Copper-based nanomaterials and applications
  • Terahertz technology and applications
  • Semiconductor Lasers and Optical Devices
  • Brake Systems and Friction Analysis
  • Human Motion and Animation
  • Chalcogenide Semiconductor Thin Films
  • Advanced MEMS and NEMS Technologies

META Health
2023-2024

State Grid Nanjing Power Supply Company (China)
2012-2023

China General Nuclear Power Corporation (China)
2023

Beijing Normal University
2019-2022

Hebei University of Science and Technology
2021-2022

Menlo School
2021

Meta (United States)
2021

University of California System
2019

University of California, Los Angeles
2015-2018

Columbia University
2015

Convolutional neural network (CNN) offers significant accuracy in image detection. To implement detection using CNN the Internet of Things (IoT) devices, a streaming hardware accelerator is proposed. The proposed optimizes energy efficiency by avoiding unnecessary data movement. With unique filter decomposition technique, can support arbitrary convolution window size. In addition, max-pooling function be computed parallel with separate pooling unit, thus achieving throughput improvement. A...

10.1109/tcsi.2017.2735490 article EN IEEE Transactions on Circuits and Systems I Regular Papers 2017-08-17

With Co-MOFs as an oxidase-mimicking nanozyme, the AR oxidized product, non-fluorescent resazurin could be reduced to fluorescent resorufin by <sc>l</sc>-cysteine, which is specifically applied for fluorescence “turn-on” detection of <sc>l</sc>-cysteine.

10.1039/c9cc06840f article EN Chemical Communications 2019-12-06

This paper presents the design and characterization of a 0.56 THz frequency synthesizer implemented in standard 65 nm CMOS technology. Its front end consists triple-push Colpitts oscillators (TPCOs), followed by first second stage injection locking dividers (ILFDs) divide-by-16 chain. TPCOs are used to triple their fundamental frequencies 0.53-0.56 THz, while ILFDs subsequent divider chain divide such 2.7-2.9 GHz. back separate phase-locked loops with unique circuit designs accomplish...

10.1109/jssc.2016.2601614 article EN IEEE Journal of Solid-State Circuits 2016-09-09

In this paper, we study a novel problem in egocentric action recognition, which term as "Multimodal Generalization" (MMG). MMG aims to how systems can generalize when data from certain modalities is limited or even completely missing. We thoroughly investigate the context of standard supervised recognition and more challenging few-shot setting for learning new categories. consists two scenarios, designed support security, efficiency considerations real-world applications: (1) missing...

10.1109/cvpr52729.2023.00627 article EN 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) 2023-06-01

A cognitive tri-band transmitter (TX) with a forwarded clock using multiband signaling and high-order digital signal modulations is presented for serial link applications. The TX features learning an arbitrary channel response by sending sweep of continuous wave, detecting power level at the receiver side, then adapting modulation scheme, data bandwidth, carrier frequencies accordingly based on detected information. supported scheme ranges from nonreturn to zero/Quadrature phase shift keying...

10.1109/jssc.2016.2628049 article EN IEEE Journal of Solid-State Circuits 2016-12-02

We introduce PyTorchVideo, an open-source deep-learning library that provides a rich set of modular, efficient, and reproducible components for variety video understanding tasks, including classification, detection, self-supervised learning, low-level processing. The covers full stack tools multimodal data loading, transformations, models reproduce state-of-the-art performance. PyTorchVideo further supports hardware acceleration enables real-time inference on mobile devices. is based PyTorch...

10.1145/3474085.3478329 article EN Proceedings of the 30th ACM International Conference on Multimedia 2021-10-17

Currently, there is a limited ability to interactively study developmental cardiac mechanics and physiology. We therefore combined light-sheet fluorescence microscopy (LSFM) with virtual reality (VR) provide hybrid platform for 3D architecture time-dependent contractile function characterization. By taking advantage of the rapid acquisition, high axial resolution, low phototoxicity, fidelity in 4D (3D spatial + 1D time or spectra), this VR-LSFM methodology enables interactive visualization...

10.1172/jci.insight.97180 article EN JCI Insight 2017-11-15

The continuous scaling of CMOS technology increases processor performance and memory capacity, requiring the CPU/Memory interface to have ever-higher bandwidth energy efficiency over past few years. Among those cutting-edge technologies, multi-band (multi-tone) signaling has shown great potential because its high data-rate capability along with low consumption [3]-[5]. With spectrally divided signaling, transceiver can be designed avoid spectral notches extended communication multi-drop...

10.1109/isscc.2016.7417968 article EN 2022 IEEE International Solid- State Circuits Conference (ISSCC) 2016-01-01

We report the results of systematic studies plasmonic and photonic guided modes in large-area single-layer graphene integrated into a nanostructured silicon substrate. The interaction light with substrate crystals can be classified distinct regimes depending on relation crystal lattice constant relevant modal wavelengths, that is, plasmonic, photonic, free-space. By optimizing design substrate, these resonant increase absorption infrared, facilitating enhanced performance modulators,...

10.1021/acsphotonics.5b00209 article EN publisher-specific-oa ACS Photonics 2015-10-05

Abstract Intelligent fault diagnosis of rolling bearings under non-stationary and time-varying speed conditions is still a challenging task. At the same time, reasonable explanation for an intelligent model based on features currently lacking. Therefore, we exploit explainable one-dimensional convolutional neural network (1DCNN) by combining with demodulated frequency vibration signals apply it to classification conditions. First, obtained encoder were transformed into generalized...

10.1088/1361-6501/ac78c5 article EN Measurement Science and Technology 2022-06-29

Here, hollow CdS nanoboxes (average size of 120 nm) with graded nanovoids (ranging from 2 nm to 13 distributed in the walls thickness 20 are situ synthesized through directly sulfurizing a Cd metal-organic framework (Cd-MOF-47) thiourea. A specific surface area 153 m2 g-1 is achieved. With as-prepared as photocatalysts for water splitting H2 (visible light irradiation), evolution rate high 21 654 μmol h-1, which nearly 79 times higher than that bulk CdS. Such an excellent photocatalytic...

10.1039/c9dt00603f article EN Dalton Transactions 2019-01-01

This paper presents a novel self-equalized and skewless frequency-division multiplexing memory interface. To prove its feasibility, we have realized 5-band QPSK transceiver in 40 nm CMOS to transmit up 4 Gb/s through 10 orthogonal communication channels (each with 400 Mb/s) via on-chip TSV emulator effective loading of 1 pF or 5-cm FR-4 PCB trace. With differential current-mode signaling, the consumes only 5.4 mW takes 80×100 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

10.1109/cicc.2015.7338373 article EN 2022 IEEE Custom Integrated Circuits Conference (CICC) 2015-09-01

A low-noise multi-band transmitter for GSM quad-band and WCDMA is presented. Programmable parameters of the analog baseband RF frontend enable adaption different protocols frequency bands. three-step carrier leakage calibration algorithm proposed to suppress -65 dBm at highest gain. Novel linearization methods are used in low-pass filter driver power amplifier meet demand 3G systems. The noise floor achieves -157 dBc/Hz 190 MHz offset band, which eliminates need external SAW filter.

10.1109/tcsi.2013.2239156 article EN IEEE Transactions on Circuits and Systems I Regular Papers 2013-04-08

Touchscreen technology plays an important role in the booming mobile devices market. Traditional touchscreen only provides 2D interactions with limited user experience. To overcome these limitations, we propose a novel 3D touch sensing system called Airtouch system, which can recognize movement of finger 3-dimensional space. Half manufacturing cost is reduced by applying single layer electrodes panel design. Moreover, oscillator based correlated double sampling circuit implemented as...

10.1145/2897937.2901902 article EN 2016-05-25

Score distillation has emerged as one of the most prevalent approaches for text-to-3D asset synthesis. Essentially, score updates 3D parameters by lifting and back-propagating scores averaged over different views. In this paper, we reveal that gradient estimation in is inherent to high variance. Through lens variance reduction, effectiveness SDS VSD can be interpreted applications various control variates Monte Carlo estimator distilled score. Motivated rethinking based on Stein's identity,...

10.48550/arxiv.2401.00604 preprint EN other-oa arXiv (Cornell University) 2024-01-01

Touch sensing has been widely implemented as a main methodology to bridge human and machine interactions. The traditional touch range is 2-D therefore limits the user experience. To overcome these limitations, we propose novel 3-D contactless called Airtouch system, which improves experience by remotely detecting single/multi-finger position. A single layer panel with triangle-shaped electrodes proposed achieve multitouch detection capability well manufacturing cost reduction. Moreover, an...

10.1109/tcad.2017.2702630 article EN IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems 2017-05-12

10.1016/j.eswa.2011.10.017 article EN Expert Systems with Applications 2011-10-26
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