Publications by authors named "Zunyu Liu"

Multispectral detection technology captures characteristic spectral information across various wavebands, exhibiting substantial application potential. However, most currently reported multispectral photodetectors rely on intricate dual- or multi-junction structures, severely limiting material thickness, doping concentration, and band alignment design, thereby impeding widespread adoption. In this study, a bias-tunable multispectral photodetector featuring a straightforward single-junction design is introduced.

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Article Synopsis
  • - 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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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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Multi-dimensional heterojunction materials have attracted much attention due to their intriguing properties, such as high efficiency, wide band gap regulation, low dimensional limitation, versatility and scalability. To further improve the performance of materials, researchers have combined materials with various dimensions using a wide variety of techniques. However, research on growth mechanism of such composite materials is still lacking.

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Wide bandgap semiconductors, particularly In O :Sn (ITO), are widely used as transparent conductive electrodes in optoelectronic devices. Nevertheless, due to the strohave beenng scattering probability of high-concentration oxygen vacancy (V ) defects, the mobility of ITO is always lower than 40 cm  V  s . Recently, hydrogen-doped In O (In O :H) films have been proven to have high mobility (>100 cm  V  s ), but the origin of this high mobility is still unclear.

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Self-charging power systems collecting energy harvesting technology and batteries are attracting extensive attention. To solve the disadvantages of the traditional integrated system, such as highly dependent on energy supply and complex structure, an air-rechargeable Zn battery based on MoS/PANI cathode is reported. Benefited from the excellent conductivity desolvation shield of PANI, the MoS/PANI cathode exhibits ultra-high capacity (304.

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Among the increasingly popular miniature and flexible smart electronics, two-dimensional materials show great potential in the development of flexible electronics owing to their layered structures and outstanding electrical properties. MXenes have attracted much attention in flexible electronics owing to their excellent hydrophilicity and metallic conductivity. However, their limited interlayer spacing and tendency for self-stacking lead to limited changes in electron channels under external pressure, making it difficult to exploit their excellent surface metal conductivity.

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Two-dimensional transition-metal carbides (MXenes) have superhydrophilic surfaces and superior metal conductivity, making them competitive in the field of electrochemical energy storage. However, MXenes with layered structures are easily stackable, which reduces the ion accessibility and transport paths, thus limiting their electrochemical performance. To fully exploit the advantages of MXenes in electrochemical energy storage, this study reports the etching of large-sized MXene into nanosheets with nanoscale ion channels via a chemical oxidation method.

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Accurate and continuous pressure signal detection without external power supply is a key technology to realize the miniaturization of wearable electronic equipment, the internet of things, and artificial intelligence. However, it is difficult to be achieved by using current sensor technologies. Here, a new one-body strategy, i.

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The development of smart wearable electronic devices puts forward higher requirements for future flexible electronics. The design of highly sensitive and high-performance flexible pressure sensors plays an important role in promoting the development of flexible electronic devices. Recently, MXenes with excellent properties have shown great potential in the field of flexible electronics.

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Purpose: The purpose of this paper is to explore the importance of lean leadership in an implementation in a Chinese hospital, considering a particular focus on the attitudes of nursing professionals while identifying specific cultural or institutional factors in China that might affect the implementation.

Design/methodology/approach: The authors use Harrison 's (2016) framework to explore the outcomes of a nine-month action research project whereby the authors observed the process and outcomes of implementing lean in a pharmacy intravenous admixture service of a Chinese hospital.

Findings: The implementation of lean had positive results, which improved the efficiency of the operation, reduced the work start time and the amount of staff, and improved clinical satisfaction.

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Legionella are prevalent in human-made water systems and cause legionellosis in humans. Conventional culturing and polymerase chain reaction (PCR) techniques are not sufficiently accurate for the quantitative analysis of live Legionella bacteria in water samples because of the presence of viable but nonculturable cells and dead cells. Here, we report a rapid detection method for viable Legionella that combines ethidium monoazide (EMA) with quantitative real-time PCR (qPCR) and apply this method to detect Legionella in a large number of water samples from different sources.

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