Publications by authors named "Yulu Qin"
The manipulation of femtosecond plasmon resonance and lifetime in a nanoantenna is crucial for the realization of integrated and miniaturized plasmonic circuits. Here, we have used FDTD simulations to study the plasmonic resonance and lifetime variation of the far-end (P) and near-end (P) hotspots of size-gradient nanoresonators. We found that the near-field spectrum of P is red-shifted compared to P due to the phase retardation effect.
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- On-chip measurement of polarization states is essential for advanced sensing and imaging, but current circularly polarized light (CPL) photodetectors lack effective discrimination.
- This study introduces a new broadband CPL photodetector using achiral all-dielectric nanostructures, achieving a high discrimination ratio of ~107 at 405 nm without needing intensity calibration.
- The device works by exciting different near-field modes depending on the chirality of the light, leading to distinct photovoltage outputs, and offers a compact and versatile solution for high-performance CPL detection across various materials and wavelengths.
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- Passive smoking is a serious public health concern in China, and little research exists on its link to ischemic stroke.
- A study involving 30,456 never-smokers showed that those exposed to secondhand smoke (SHS) daily had a 21% higher risk of ischemic stroke compared to those exposed less frequently.
- The findings suggest that daily SHS exposure particularly affects women and certain groups, indicating the need for stronger tobacco control measures to protect never-smokers.
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- Understanding crop cover dynamics in Northeast China (NEC) helps develop sustainable agricultural practices tailored to local conditions and optimize the use of black soil resources.
- A study from 2017 to 2021 found a notable shift from soybean to maize, while rice cropping patterns remained stable, indicating significant spatial heterogeneity in farming practices.
- The study identified that the interactions between black-soil productivity, total grain income, and subsidy trends for various crops were key factors influencing the changing cropping patterns in the region.
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- * The research focused on the ultrafast dynamics of indirect interlayer excitonic states in WSe/ReS heterojunctions, revealing anisotropic behavior and significant linear dichroism during electron cooling and decay.
- * The findings are crucial for manipulating excitable states and serve as a foundation for designing advanced anisotropic optoelectronic devices.
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- The study explores how both radiative and non-radiative damping affect the lifetime of localized surface plasmon resonance (LSPR) modes in gold nanorods.
- It finds that the lifetime of the LSPR mode varies with the nanorod's length, exhibiting different behaviors between super-radiant and sub-radiant modes.
- Surprisingly, the super-radiant mode can have a lifetime comparable to or longer than the sub-radiant mode, challenging previous assumptions and suggesting practical applications in nano-lasers and sensitive molecular spectroscopy.
The artificial engineering of photoresponse is crucial for optoelectronic applications, especially for photodetectors. Here, we designed and fabricated a metasurface on a semimetallic CdAs nanoplate to improve its thermoelectric photoresponse. The metasurface can enhance light absorption, resulting in a temperature gradient.
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- A large study involving over 489,000 participants analyzed the relationship between snoring and CVD types, finding significant risks after adjusting for other factors.
- The findings highlight the need for healthcare professionals in China to consider habitual snoring as a potential risk factor for younger patients, while its relevance diminishes in older age groups.
Located in the uterine cervix, cervical invasive stratified mucin-producing carcinoma (i-SMILE) is a rare, recently-identified tumor about which little is known. In extremely rare cases, other kinds of invasive carcinoma can accompany i-SMILE, such as squamous cell carcinoma (SCC) and adenocarcinoma, with different proportions. Here, we report a case of cervical carcinoma coexisting with i-SMILE, mucinous carcinoma, non-specific type (NOS), and SCC.
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- The research focuses on enhancing the imaging of surface plasmon polaritons (SPPs) using a femtosecond laser technique to capture their spatiotemporal evolution.
- By introducing a 400-nm light pulse with the near-infrared (NIR) laser, the study improves visibility and avoids sample damage during imaging, allowing for better analysis of SPP properties like wavelength and velocity.
- The findings leverage quantum pathway interference to quantitatively assess electron emissions and facilitate further advancements in SPP imaging, which could aid in applications within communication technologies.
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- The study focuses on plasmon damping, which affects the performance of plasmonic applications by causing dephasing of optical polarization linked to electron oscillation.
- Researchers investigated the dephasing time in bowtie plasmonic structures using time-resolved photoemission electron microscopy and developed a method to control this dephasing time by changing the polarization of a femtosecond laser.
- Findings showed a significant adjustment in dephasing time (from 7 to 17 femtoseconds) and revealed that certain structural defects can notably prolong the dephasing time, with simulations offering insights into this phenomenon.
Aims/hypothesis: Previous evidence linking red meat consumption with diabetes risk mainly came from western countries, with little evidence from China, where patterns of meat consumption are different. Moreover, global evidence remains inconclusive about the associations of poultry and fish consumption with diabetes. Therefore we investigated the associations of red meat, poultry and fish intake with incidence of diabetes in a Chinese population.
View Article and Find Full Text PDFBackground: Tea consumption may have favorable effects on risk of fracture. However, little is known about such association in Chinese adults. The aim of this study was to examine the association between tea consumption and risk of hospitalized fracture in Chinese adults.
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