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"Lin, Zhenhua"
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Flexible Nanocomposite Conductors for Electromagnetic Interference Shielding
2023
HighlightsConvincing candidates of flexible (stretchable/compressible) electromagnetic interference shielding nanocomposites are discussed in detail from the views of fabrication, mechanical elasticity and shielding performance.Detailed summary of the relationship between deformation of materials and electromagnetic shielding performance.The future directions and challenges in developing flexible (particularly elastic) shielding nanocomposites are highlighted.With the extensive use of electronic communication technology in integrated circuit systems and wearable devices, electromagnetic interference (EMI) has increased dramatically. The shortcomings of conventional rigid EMI shielding materials include high brittleness, poor comfort, and unsuitability for conforming and deformable applications. Hitherto, flexible (particularly elastic) nanocomposites have attracted enormous interest due to their excellent deformability. However, the current flexible shielding nanocomposites present low mechanical stability and resilience, relatively poor EMI shielding performance, and limited multifunctionality. Herein, the advances in low-dimensional EMI shielding nanomaterials-based elastomers are outlined and a selection of the most remarkable examples is discussed. And the corresponding modification strategies and deformability performance are summarized. Finally, expectations for this quickly increasing sector are discussed, as well as future challenges.
Journal Article
NiO/Perovskite Heterojunction Contact Engineering for Highly Efficient and Stable Perovskite Solar Cells
2020
Recent research shows that the interface state in perovskite solar cells is the main factor which affects the stability and performance of the device, and interface engineering including strain engineering is an effective method to solve this issue. In this work, a CsBr buffer layer is inserted between NiOx hole transport layer and perovskite layer to relieve the lattice mismatch induced interface stress and induce more ordered crystal growth. The experimental and theoretical results show that the addition of the CsBr buffer layer optimizes the interface between the perovskite absorber layer and the NiOx hole transport layer, reduces interface defects and traps, and enhances the hole extraction/transfer. The experimental results show that the power conversion efficiency of optimal device reaches up to 19.7% which is significantly higher than the efficiency of the device without the CsBr buffer layer. Meanwhile, the device stability is also improved. This work provides a deep understanding of the NiOx/perovskite interface and provides a new strategy for interface optimization. A CsBr buffer layer is inserted between NiOx hole transport layer and perovskite layer to relieve the lattice mismatch induced interface stress and induce more ordered crystal growth. The results show that the addition of the CsBr buffer layer optimizes the interface between the perovskite and NiOx, reduces interface defects and traps, and enhances the hole extraction/transfer.
Journal Article
The synergistic antitumour effect of Carrimycin combined with 5-fluorouracil on colorectal cancer
2025
5-Fluorouracil (5-FU)-based chemotherapy often leads to drug resistance and adverse reactions in individuals with colorectal cancer (CRC). Carrimycin (CAM), a drug with notable antitumour effects across various tumour types, including hepatocellular carcinoma, glioblastoma, and small-cell lung carcinoma, offers an alternative owing to its limited side effects. Combination therapy is a common strategy to mitigate the negative effects of 5-FU and enhance its therapeutic efficacy. This study aimed to investigate the potential synergistic antitumour effects of CAM and 5-FU on HCT-15 and HT-29 CRC cell lines. Using computational analysis, we identified and quantified the synergistic effects of CAM and 5-FU. The combination therapy significantly outperformed 5-FU alone in inhibiting cell proliferation, colony formation, cell cycle progression, and migration. Additionally, it markedly increased the levels of reactive oxygen species and induced DNA damage. Furthermore, RNA-seq analysis revealed that the JNK and p38 MAPK signalling pathways were activated by this combination. In addition, the synergistic effects of the combination therapy were validated in a mouse subcutaneous tumour graft model. In conclusion, CAM enhances the sensitivity of CRC cells to 5-FU both in vitro and in vivo, suggesting its potential as a promising candidate for combination cancer therapy.
Journal Article
Family participatory clown therapy in venipuncture in hospitalized children: A non-randomized controlled trial
2024
To explore the effectiveness of family participatory clown therapy in venipuncture in hospitalized children.
We recruited 104 children aged 3 to 6 years for a non-randomized controlled trial from March to December 2022. All participants required peripheral venepuncture infusions for treatment. The children were assigned to either the control group (n = 52) or the experimental group (n = 52).Standard care was utilized in the control group. In the experimental group, two clown nurses and a parent provided family participatory clown therapy for 35-45 minutes per child before, during, and after venipuncture. We assessed children's pain (FLACC and W-B FPS), anxiety (VAS-A), medical fear (CFS), crying incidence, compliance, parental anxiety (S-AI), and parental satisfaction.
At venipuncture, the FLACC score was lower in the experimental group (4.46±2.053) compared to the control group (5.96±2.441), the W-B FPS score was also lower in the experimental group (4.96±2.392) than in the control group (6.35±2.266), with a statistically significant difference (P<0.05).The children in the experimental group had lower levels of anxiety, medical fear, crying, and parental anxiety than the control group. In addition, child compliance and parent satisfaction were higher in the experimental group than in the control group, with statistically significant differences (P<0.05).
Family participatory clown therapy can reduce pain, anxiety, medical fear, and crying during venipuncture in children. It can also improve venipuncture compliance, reduce parental anxiety, and increase parental satisfaction.
Journal Article
BOOTSTRAPPING MAX STATISTICS IN HIGH DIMENSIONS
by
Lin, Zhenhua
,
Lopes, Miles E.
,
Müller, Hans-Georg
in
Approximation
,
Bootstrap method
,
Estimating techniques
2020
In recent years, bootstrap methods have drawn attention for their ability to approximate the laws of “max statistics” in high-dimensional problems. A leading example of such a statistic is the coordinatewise maximum of a sample average of n random vectors in ℝ
p
. Existing results for this statistic show that the bootstrap can work when n ≪ p, and rates of approximation (in Kolmogorov distance) have been obtained with only logarithmic dependence in p. Nevertheless, one of the challenging aspects of this setting is that established rates tend to scale like n
−1/6 as a function of n.
The main purpose of this paper is to demonstrate that improvement in rate is possible when extra model structure is available. Specifically, we show that if the coordinatewise variances of the observations exhibit decay, then a nearly n
−1/2 rate can be achieved, independent of p. Furthermore, a surprising aspect of this dimension-free rate is that it holds even when the decay is very weak. Lastly, we provide examples showing how these ideas can be applied to inference problems dealing with functional and multinomial data.
Journal Article
β-lapachone suppresses tumour progression by inhibiting epithelial-to-mesenchymal transition in NQO1-positive breast cancers
2017
NQO1 is a FAD-binding protein that can form homodimers and reduce quinones to hydroquinones, and a growing body of evidence currently suggests that NQO1 is dramatically elevated in solid cancers. Here, we demonstrated that NQO1 was elevated in breast cancer and that its expression level was positively correlated with invasion and reduced disease free survival (DFS) and overall survival (OS) rates. Next, we found that β-lapachone exerted significant anti-proliferation and anti-metastasis effects in breast cancer cell lines due to its effects on NQO1 expression. Moreover, we revealed that the anti-cancer effects of β-lapachone were mediated by the inactivation of the Akt/mTOR pathway. In conclusion, these results demonstrated that NQO1 could be a useful prognostic biomarker for patients with breast cancer, and its bioactivatable drug, β-lapachone represented a promising new development and an effective strategy for indicating the progression of NQO1-positive breast cancers.
Journal Article
Reveal the Humidity Effect on the Phase Pure CsPbBr3 Single Crystals Formation at Room Temperature and Its Application for Ultrahigh Sensitive X‐Ray Detector
2022
Generally, growing phase pure CsPbBr3 single crystals is challenging, and CsPb2Br5 or Cs4PbBr6 by‐products are usually formed due to the different solubilities of CsBr and PbBr2 in the single solvent. Herein, the growth of high‐quality phase pure CsPbBr3 perovskite single crystals at room temperature by a humidity controlled solvent evaporation method is reported first. Meanwhile, the room temperature phase transition process from three dimensional (3D) cubic CsPbBr3 to two dimensional (2D) layered tetragonal CsPb2Br5 and the detailed mechanism induced by humidity are revealed. Moreover, compared with the organic–inorganic perovskite, the prepared CsPbBr3 single crystals are much more stable under high humidity, which satisfies the long‐term working conditions of X‐ray detectors. The X‐ray detectors based on CsPbBr3 single crystals show a high sensitivity and a low detection limit of 1.89 μGyair s–1, all of which meet the needs of medical diagnosis. The mixed products of CsBr and PbBr2 are rich and diverse, which is a phenomenon of people scratching their heads. In the humidity controlled low‐temperature preparation process, the mechanism of its diversity is uncovered through the transformations of products under the influence of different conditions and a valuable guidance is provided for the subsequent crystal acquisition and growth.
Journal Article
Versatile optoelectronic memristor based on wide-bandgap Ga2O3 for artificial synapses and neuromorphic computing
2025
Optoelectronic memristors possess capabilities of data storage and mimicking human visual perception. They hold great promise in neuromorphic visual systems (NVs). This study introduces the amorphous wide-bandgap Ga
2
O
3
photoelectric synaptic memristor, which achieves 3-bit data storage through the adjustment of current compliance (
I
cc
) and the utilization of variable ultraviolet (UV-254 nm) light intensities. The “AND” and “OR” logic gates in memristor-aided logic (MAGIC) are implemented by utilizing voltage polarity and UV light as input signals. The device also exhibits highly stable synaptic characteristics such as paired-pulse facilitation (PPF), spike-intensity dependent plasticity (SIDP), spike-number dependent plasticity (SNDP), spike-time dependent plasticity (STDP), spike-frequency dependent plasticity (SFDP) and the learning experience behavior. Finally, when integrated into an artificial neural network (ANN), the Ag/Ga
2
O
3
/Pt memristive device mimicked optical pulse potentiation and electrical pulse depression with high pattern accuracy (90.7%). The single memristive cells with multifunctional features are promising candidates for optoelectronic memory storage, neuromorphic computing, and artificial visual perception applications.
Multi-functional integration!
The memristor integrates four functions of multi-level storage, logic gates, UV sensing, and neuromorphic computing in one device.
Journal Article
2009–2023 Bibliometric analysis of the clinical value of graphene quantum dots in glioblastoma treatment
2025
Glioblastoma (GBM) is the most common primary brain tumour in adults and poses a serious health risk. Graphene quantum dots (GQDs) are zero-dimensional crystalline discs de-rived from two-dimensional graphene, which contribution of GQDs in the treatment of GBM and the great potential for future development. In this study, the Web of Science database was applied to search 462 relevant papers published between 2009 and 2023, and analyzed using VOS viewer and CiteSpace software tools. This analysis aims to provide researchers with insights into the current state of applications and to facilitate a clearer understanding of potential pathways and directions for future research in this field. Our study showed a continuous increase in the number of papers about GQDs in the treatment of GBM. In the field for more than a decade, GQDs has been a research priority in drug delivery due to their excellent optical and chemical properties. It is reasonable to believe that the use of GQDs for drug delivery for the treatment of GBM will be-come one of the extremely important research topics in the future.
Journal Article