Changwen Liu

ORCID: 0000-0002-8248-0700
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About
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Research Areas
  • Advanced Combustion Engine Technologies
  • Perovskite Materials and Applications
  • Conducting polymers and applications
  • Combustion and flame dynamics
  • Quantum Dots Synthesis And Properties
  • Vehicle emissions and performance
  • Organic Electronics and Photovoltaics
  • Chalcogenide Semiconductor Thin Films
  • Biodiesel Production and Applications
  • Combustion and Detonation Processes
  • Catalytic Processes in Materials Science
  • Viral Infections and Immunology Research
  • Abdominal Surgery and Complications
  • Wireless Networks and Protocols
  • Respiratory Support and Mechanisms
  • Mechanical Circulatory Support Devices
  • Laser-Plasma Interactions and Diagnostics
  • Optical measurement and interference techniques
  • Cardiac Structural Anomalies and Repair
  • Electrocatalysts for Energy Conversion
  • Radiomics and Machine Learning in Medical Imaging
  • Fluid Dynamics and Turbulent Flows
  • Mobile Ad Hoc Networks
  • Fault Detection and Control Systems
  • Heat transfer and supercritical fluids

First Affiliated Hospital of GuangXi Medical University
2023-2025

Guangxi Medical University
2023-2025

Tianjin University
2014-2024

Hangzhou First People's Hospital
2010-2024

Peking University
2022-2024

Zhejiang University of Technology
2024

Nano Carbon (Poland)
2024

Zhejiang Institute of Communications
2024

Sichuan University
2024

Xihua University
2021-2022

IEEE 802.11n is an ongoing next-generation wireless LAN standard that supports a very highspeed connection with more than 100 Mb/s data throughput measured at the medium access control layer. This article investigates key MAC enhancements help achieve high and efficiency. A detailed description given for various frame aggregation mechanisms proposed in latest draft standard. Our simulation results confirm A-MSDU, A-MPDU, combination of these methods improve extensively channel efficiency...

10.1109/mwc.2008.4454703 article EN IEEE Wireless Communications 2008-02-01

In 2012, the European Society of Intensive Care Medicine proposed a definition for acute gastrointestinal injury (AGI) based on current medical evidence and expert opinion. The aim present study was to evaluate feasibility using AGI grading system investigate association between severity grades with clinical outcome in critically ill patients. Adult patients at 14 general intensive care units (ICUs) an expected ICU stay ≥24 h were prospectively studied. grade assessed daily basis (GI)...

10.1186/s13054-017-1780-4 article EN cc-by Critical Care 2017-07-14

Record high and hysteresis free perovskite based solar cells are achieved by crystal engineering optimization of carrier transport pathway.

10.1039/c7ta03710d article EN Journal of Materials Chemistry A 2017-01-01

High-efficiency hole transport layer free perovskite solar cells (HTL-free PSCs) with economical and simplified device structure can greatly facilitate the commercialization of PSCs. However, eliminating key HTL in PSCs results usually a severe efficiency loss poor carrier transfer due to energy-level mismatching at indium tin oxide (ITO)/perovskite interface. In this study, we solve issue by introducing an organic monomolecular (ML) raise effective work function ITO assistance interface...

10.1021/acsnano.8b07627 article EN ACS Nano 2019-01-24

Inverted perovskite solar cells (PSCs) with a C60 framework are known for their common drawback of low power conversion efficiency (PCE) <20% because nonradiative recombination and inefficient charge transport at interfaces. Here, we report an ultrathin [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) as cap layer on films to overcome this issue. Such functional efficiently passivates trap states establishes gradient energy level alignment onto perovskite, facilitating the efficient...

10.1021/acsami.0c02837 article EN ACS Applied Materials & Interfaces 2020-04-07

Bimetallic single atoms (Pd and Ni) work in synergy to promote the catalytic performance of α-MnO 2 , enabling a near unity conversion HMF DFF under mild conditions.

10.1039/d2gc01769e article EN Green Chemistry 2022-01-01

In this paper, performance in hybrid solar cells based on ZnO nanorod array (ZnO-NA) is significantly improved by formation of a heterostructured ZnO/CdS-core/shell (ZnO-CdS-NA), the CdS shell effects device including charge transport and recombination dynamics are discussed, model concerning ineffective polymer phase proposed for understanding generation upon formation. The ZnO-CdS-NAs with varied thickness (L) were prepared depositing quantum dots nanorods ZnO-NA. Solar filling interspaces...

10.1021/jp312728t article EN The Journal of Physical Chemistry C 2013-03-08

To develop ultrasound-based radiomics models and a clinical model associated with inflammatory markers for predicting intrahepatic cholangiocarcinoma (ICC) lymph node (LN) metastasis. Both are integrated enhanced preoperative prediction. This study retrospectively enrolled 156 surgically diagnosed ICC patients. A region of interest (ROI) was manually identified on the ultrasound image tumor to extract features. In training cohort, we performed Wilcoxon test screen differentially expressed...

10.1186/s12880-024-01542-8 article EN cc-by-nc-nd BMC Medical Imaging 2025-01-02

This paper reports the chemical modification effects at charge separation interface on performance of hybrid solar cells consisting poly(2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene) (MEH-PPV) as an electron donor (D) and vertically aligned ZnO nanorod arrays acceptor (A). Results show that, with increasing time Ts for grafting dye Z907 onto surface from 0 to 8 h, transfer efficiency MEH-PPV/ZnO keeps increasing, short circuit current (Jsc) increases reaches a peak value = but open...

10.1021/jp1111247 article EN The Journal of Physical Chemistry C 2011-02-16

In this paper, inverted perovskite solar cells (PSCs) employing a novel polymer‐assisted small molecule layer as hole transport (HTL) are reported and the effect of mixed HTL on device performance is investigated. It first time that doped with polymer HTL. The introduction appropriate content into will lead to much smoother surface for largely reduced charge recombination, most importantly, energy level alignment more matched via optimization doping content. Therefore, transfer property...

10.1002/solr.201800173 article EN Solar RRL 2018-08-27
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