Publications by authors named "Yuming He"

To study the characteristics of ozone formation sensitivity changes in the Chengdu-Chongqing area, the summer ozone formation sensitivity (OFS) was analyzed using satellite observation of the OMI tropospheric column concentration of HCHO and NO. Additionally, the effects of meteorological factors, source emissions, and their interactions on OFS were identified with the geodetic detector. The results showed that the summer OFS zoning in the Chengdu-Chongqing area was dominated by a transitional regime, with an area share of 42.

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Obstructive sleep apnea (OSA) patients have varying degrees of cognitive impairment, but the specific pathogenic mechanism is still unclear. Meanwhile, poor compliance with continuous positive airway pressure (CPAP) in OSA prompts better solutions. This study aimed to identify differentially expressed genes between the non-obese OSA patients and healthy controls, and to explore potential biomarkers associated with cognitive impairment.

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Psoriasis is a chronic, recurrent and inflammatory skin disease. Although conventional immunosuppressants can ameliorate psoriatic symptoms, it tends to relapse over time. Previous studies have shown that exosomes from both immune and non-immune cells participate in psoriatic immunopathology.

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Article Synopsis
  • Graphitic carbon nitride (g-CN) is emerging as a strong photocatalyst for environmental and energy applications due to its stability and appropriate band structure, but suffers from issues like aggregation and low surface area that reduce its efficiency.
  • Significant research is focused on improving g-CN by designing tailored morphologies and optimizing electronic properties through various synthesis methods.
  • The review highlights recent advancements in g-CN synthesis techniques and discusses future challenges and directions for enhancing its photocatalytic performance.
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Cost-effective electrocatalysts is a key constituent to establish the balance of cost and catalytic efficiency for oxygen evolution reaction (OER) via water electrolysis in the area of energy conversion and storage. NiFe phosphide decorated with trace amount of iridium (Ir) species in-situ grown on carbon cloth was prepared by a facile wet chemistry approach followed by a phosphorization post-treatment at a relative low temperature. The optimal electrocatalyst, Ir-NiFeP/CC, exhibits excellent OER activity, with an low overpotential of 190 mV at 10 mA cm for alkaline OER, and a desirable long-term durability over 90 h.

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  • - TeSe shortwave infrared (SWIR) photodetectors are being developed for easier integration with readout integrated circuits (ROIC), offering a cost-effective alternative to traditional SWIR detectors despite challenges like high dark current.
  • - A new ZnO/TeSe heterojunction photodiode has been created with an amorphous TeO layer that significantly improves performance by reducing dark current density to -3.5 × 10 A cm at -10 mV and achieving a wide detection range from 300 to 1700 nm.
  • - This research successfully integrates TeSe photodiodes with a 64 × 64 ROIC array, marking the largest scale for TeSe-based detectors, and showcases potential
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Psoriasis is a chronic, recurrent, and inflammatory skin disease. Topical agents, which can avoid the adverse effects of systemic treatment, are the first-choice therapy for patients with mild-to-moderate psoriasis. Hederacoside C (HSC) with anti-inflammatory properties has been used to treat some inflammatory diseases.

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Developing high electroactivity ruthenium (Ru)-based electrocatalysts for pH-universal hydrogen evolution reaction (HER) is challenging due to the strong bonding strengths of key Ru─H/Ru─OH intermediates and sluggish water dissociation rates on active Ru sites. Herein, a semi-ionic F-modified N-doped porous carbon implanted with ruthenium nanoclusters (Ru/FNPC) is introduced by a hydrogel sealing-pyrolying-etching strategy toward highly efficient pH-universal hydrogen generation. Benefiting from the synergistic effects between Ru nanoclusters (Ru NCs) and hierarchically F, N-codoped porous carbon support, such synthesized catalyst displays exceptional HER reactivity and durability at all pH levels.

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To explore novel electrode materials with in-depth elucidation of initial coulombic efficiency (ICE), kinetics, and charge storage mechanisms is of great challenge for Na-ion storage. Herein, a novel 3D antiperovskite carbide NiZnC@rGO anode coupled with ether-based electrolyte is reported for fast Na-ion storage, exhibiting superior performance than ester-based electrolyte. Electrochemical tests and density functional theory (DFT) calculations show that NiZnC@rGO anode with ether-based electrolyte can promote charge/ion transport and lower Na diffusion energy barrier, thereby improving ICE, reversible capacity, rate, and cycling performance.

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Flexible shortwave infrared detectors play a crucial role in wearable devices, bioimaging, automatic control, etc. Commercial shortwave infrared detectors face challenges in achieving flexibility due to the high fabrication temperature and rigid material properties. Herein, we develop a high-performance flexible TeSe photodetector, resulting from the unique 1D crystal structure and small elastic modulus of Te-Se alloying.

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In the quest to build general-purpose photonic quantum computers, fusion-based quantum computation has risen to prominence as a promising strategy. This model allows a ballistic construction of large cluster states which are universal for quantum computation, in a scalable and loss-tolerant way without feed forward, by fusing many small n-photon entangled resource states. However, a key obstacle to this architecture lies in efficiently generating the required essential resource states on photonic chips.

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Intracortical brain-computer interfaces offer superior spatial and temporal resolutions, but face challenges as the increasing number of recording channels introduces high amounts of data to be transferred. This requires power-hungry data serialization and telemetry, leading to potential tissue damage risks. To address this challenge, this paper introduces an event-based neural compressive telemetry (NCT) consisting of 8 channel-rotating Δ-ADCs, an event-driven serializer supporting a proposed ternary address event representation protocol, and an event-based LVDS driver.

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A near-field galvanic coupled transdural telemetry ASICs for intracortical brain-computer interfaces is presented. The proposed design features a two channels transmitter and three channels receiver (2TX-3RX) topology, which introduces spatial diversity to effectively mitigate misalignments (both lateral and rotational) between the brain and the skull and recovers the path loss by 13 dB when the RX is in the worst-case blind spot. This spatial diversity also allows the presented telemetry to support the spatial division multiplexing required for a high-capacity multi-implant distributed network.

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Background: Bladder cancer (BLCA) is a common malignant tumor of urinary system and prognostic biomarkers are needed for better clinical decision-making and patient management. Cancer stem cells (CSCs) are involved in carcinogenesis, development, metastasis and recurrence of BLCA. This study explored the prognostic and predictive value of CSCs-related genes and laid the groundwork for precision treatment development in BLCA.

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Bright, polarized, and high-purity single-photon sources in telecom wavelengths are crucial components in long-distance quantum communication, optical quantum computation, and quantum networks. Semiconductor InAs/InP quantum dots (QDs) combined with photonic cavities provide a competitive path, leading to optimal single-photon sources in this range. Here, we demonstrate a bright and polarized single-photon source operating in the telecom C-band based on an elliptical Bragg grating (EBG) cavity.

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Background: Immune checkpoint inhibitors (ICIs) have shown efficacy in patients with metastatic urothelial cancer (mUC), however, only a small subset of patients could benefit from ICIs. Identifying predictive biomarkers of ICIs in patients with mUC is clinical meaningful for patient stratification and administration.

Methods: Clinical and transcriptomic data of mUC patients treated with ICIs from mUC cohort (IMvigor210 study) was utilized to explore the predictive biomarkers.

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Lithium-sulfur batteries (LSBs) have emerged as one of the ideal contenders for the upcoming generation of high energy storage devices due to their superb energy density. Nonetheless, the shuttle effect generated by intermediate lithium polysulfides (LiPSs) during cell cycling brings about capacity degradation and poor cycling stability of LSBs. Here, a versatile SrFeO (FSO) and acetylene black (AB) modified PP separator is first presented to inhibit the shuttle effect.

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Article Synopsis
  • Aqueous Zn-based batteries (AZBs) are gaining interest, but finding advanced cathode materials and improving their energy capacity is still challenging.
  • Researchers designed a new cathode made of pseudocapacitive multiple perovskite fluorides (KMF-(IV, V, VI)) used in flexible AZB systems, revealing a unique charge storage mechanism involving phase changes in the material.
  • By using innovative redox electrolyte strategies, the new AZBs demonstrated enhanced energy storage and flexible performance, surpassing traditional liquid electrolyte systems, indicating a significant advancement in electrochemical energy storage.
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Short-wave infrared detectors are increasingly important in the fields of autonomous driving, food safety, disease diagnosis, and scientific research. However, mature short-wave infrared cameras such as InGaAs have the disadvantage of complex heterogeneous integration with complementary metal-oxide-semiconductor (CMOS) readout circuits, leading to high cost and low imaging resolution. Herein, a low-cost, high-performance, and high-stability Te Se short-wave infrared photodiode detector is reported.

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This paper presents a bio-inspired event-driven neuromorphic sensing system (NSS) capable of performing on-chip feature extraction and "send-on-delta" pulse-based transmission, targeting peripheral-nerve neural recording applications. The proposed NSS employs event-based sampling which, by leveraging the sparse nature of electroneurogram (ENG) signals, achieves a data compression ratio of >125×, while maintaining a low normalized RMS error of 4% after reconstruction. The proposed NSS consists of three sub-circuits.

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  • Selenium is a promising material for solar cells due to its high absorption and photoconductivity but has low efficiency because its bandgap is too high and lacks a good electron transport layer.
  • By alloying 30% Tellurium with 70% Selenium, the bandgap is optimized to 1.36 eV, ideal for solar cell performance.
  • Using a ZnO electron transport layer with a good interface leads to a significant increase in efficiency, reaching 1.85% for the ZnO/SeTe solar cells.
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Indium tin oxide (ITO) is widely used in a variety of optoelectronic devices, occupying a huge market share of $1.7 billion. However, traditional preparation methods such as magnetron sputtering limit the further development of ITO in terms of high preparation temperature (>350 °C) and low mobility (∼30 cm V s).

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Infrared solar cells are regarded as candidates for expanding the solar spectrum of c-Si cells, and the window electrodes are usually transparent conductive oxide (TCO) such as widely used indium tin oxide material. However, due to the low transmittance of the TCO in the near-infrared region, most near-infrared light cannot penetrate the electrode and be absorbed by the active layer. Here, the propose a simple procedure to fabricate the window materials with high near-infrared transmittance and high electrical conductivity, namely the hydrogen-doped indium oxide (IHO) films prepared by room temperature magnetron sputtering.

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Recently, selenium (Se) has regained interest as a possible wide-bandgap photovoltaic material for silicon-based tandem applications. However, the easy sublimation of Se below the melting point (220 °C) brings challenges for high-quality Se thin films. Herein, we design a rapid thermal annealing (RTA) method to balance the contradiction between the sublimation and crystallization of Se thin films.

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