Cu Chen

Cu Chen
Massachusetts Institute of Technology | MIT · Department of Materials Science and Engineering

Doctor of Engineering
Researcher

About

1,978
Publications
170,993
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
22,575
Citations
Citations since 2016
1258 Research Items
16747 Citations
201620172018201920202021202201,0002,0003,0004,000
201620172018201920202021202201,0002,0003,0004,000
201620172018201920202021202201,0002,0003,0004,000
201620172018201920202021202201,0002,0003,0004,000
Introduction
Skills and Expertise

Publications

Publications (1,978)
Article
Full-text available
Immune checkpoint blockade (ICB) is a powerful oncologic treatment modality for a wide variety of human malignancies, but the patient response rate to this treatment remains low, especially in patients with cutaneous squamous cell carcinoma (cSCC). 5-Aminoleuvulinic acid-photodynamic therapy (ALA-PDT) is widely used to treat cancerous and precancer...
Article
The ionic properties of components determine that perovskite films will generate numerous charged surface defect under continuous high-temperature annealing, resulting in suboptimal performance and poor stability of perovskite solar cells (PSCs). Based on the principle of Lewis acid-base coordination, 1,8-naphthyridine (1,8-ND) with electron-rich s...
Article
Full-text available
In this study, four typical urban landscaping tree species were selected, three open top air chambers with different ozone concentrations were set, and the responses of chlorophyll fluorescence, chlorophyll content and relative conductivity of the trees to ozone stress were studied. The results showed that with the increase in ozone concentration,...
Preprint
Full-text available
Purpose This study examines the extent to which depressive symptoms mediate the link between childhood friendship (CF) and physical function among middle-aged and older adults in China. Methods The data originated from the China Health and Retirement Longitudinal Study. The Sobel test and multivariable logistic regression were performed to examine...
Article
Sand blasting was proposed as a surface modification approach on the small diameter and thin culm wall bamboo species of Neosinocalamus affinis for the fabrication of laminated bamboo composites. The results revealed that sand blasting modification could almost wipe off the wax and silicons deposited on the green and yellow surfaces by removing or...
Article
One of the most widely discussed issues in banking regulation and research is transparency. Yet, whether depositors – banks’ most important claimholders – are affected by transparency, is an empirical open question. Analyzing US commercial banks from 1994 to 2019, we show that uninsured deposit flows are more sensitive to information about bank per...
Article
Heat energy may be converted into electric energy via a thermoelectric generator (TEG). It is an effective method of recovering and utilizing low-grade energy. However, the output voltage of a TEG is typically too low for direct applications. A waste heat recovery system based on thermoelectric generation was developed to convert waste heat energy...
Article
Si has attracted more attention as an ideal anode for next-generation Li-ion batteries (LIBs), due to its large theoretical capacity and low de-lithiation voltage. However, extreme volume change (300%) and low electronic conductivity severely hinder its practical application. Herein, to overcome these problems, via the electrospinning and pyrolysis...
Article
Full-text available
A unique porous material, namely, MXene/SiO2 hybrid aerogel, with a high surface area, was prepared via sol-gel and freeze-drying methods. The hierarchical porous hybrid aerogel possesses a three-dimensional integrated network structure of SiO2 cross-link with two-dimensional MXene; it is used not only as a scaffold to prepare sulfur-based cathode...
Preprint
Designing feasible and effective architectures under diverse computational budgets, incurred by different applications/devices, is essential for deploying deep models in real-world applications. To achieve this goal, existing methods often perform an independent architecture search process for each target budget, which is very inefficient yet unnec...
Article
Semiconductors In article number 2202529, Tongbo Wei, Zhongfan Liu, Peng Gao, Zhiqiang Liu, and co‐workers find that geometry matched WS2 can provide a proper lattice potential field for nitrides epitaxial growth. By using a transferred WS2 buffer layer, a single‐crystalline GaN epilayer can be obtained on an amorphous quartz glass by heterogenous...
Article
Full-text available
Lithium–sulfur (Li–S) battery with high energy density is attracting more and more attention as a candidate battery for high-energy power supply in the coming new energy era. However, several defects, such as the insulation properties and shuttle effect of sulfur species, greatly hinder its application. Herein, we rationally design a three-dimensio...
Article
In this study, the enantiomer-specific bioactivity, bioaccumulation, and toxicity of fenpropathrin (FEN) enantiomers were investigated in soil-earthworm microcosms. The bioactivity order was S-FEN > rac-FEN > R-FEN for Spodoptera litura and Conogethes punctiferalis. Moreover, S-FEN was 12.0 and 32.2 times more toxic than rac-FEN and R-FEN to earthw...
Article
Organic battery materials are ideal anodes for potassium ion batteries (PIBs) due to their structural diversity, abundant resources, and environmental friendliness. Herein, we report a conjugated polymer, polybenzo[1,2-b:4,5-b’]dithiophene-4,8-dione (PBDTO), with a coaxial spiral structure. The plane rotation angle of each PBDTO molecule is about 2...
Article
To build an interconnected system of pores for oil storage, a ball milling (BM) strategy that disperses TiH2 homogeneously within iron-based composites was developed. TiH2/Fe powders were pressed and sintered after ball milling at 250 r/min. Special consideration was given to the effects of the BM duration on the microstructural and tribological pr...
Article
Ethanol Oxidation Reaction In article number 2203506, Xinlong Tian and co‐workers prepare 2D ternary Pd3Pt1Rh0.1 nanorings with efficient ethanol oxidation reaction performance via a facile one‐pot solvothermal approach, and systematic studies are carried out to reveal the mechanisms of the enhanced performance and C–C bond selectivity. The density...
Article
Full-text available
Skin is an important ecosystem that links the human body and the external environment. Previous studies have shown that the skin microbial community could remain stable, even after long-term exposure to the external environment. In this study, we explore two questions: Do there exist strains or genetic variants in skin microorganisms that are indiv...
Article
A well-designed spherical-nanocellulose (SNC)/silver-nanoparticle (AgNP) composite (SNC-AgNP) with a novel structure, a conjugate of large nanospheres (SNC, mean particle size 41 ± 9.7 nm) and small nanospheres (AgNPs, mean particle size 12 ± 6.3 nm), was prepared by the reduction of silver nitrate on plant-derived cellulose. The large nanospheres...
Article
Compared to Te, Ni is found in abundance in the earth's crust. At the same time, the mechanical properties of Ni atom-substituted skutterudite are significantly improved. In this study, a series of S-filled Ni-substituted skutterudite compounds were synthesized by a high-pressure and high-temperature (HPHT) method in the synthesis pressure range of...
Article
In binary-size granular segregation, when the avalanche stops, the surface of the granular bed is raised upstream of the flow layer, forming a local wedge structure, called trapped kink, which is important for segregation pattern formation. In this paper, we established the relationship between the position distribution of trapped kink head and gra...
Article
Objective: This study aimed to develop a user-friendly nomogram model to evaluate the risk of catheter-associated urinary tract infections in neuro-critically ill patients. Methods: A retrospective cohort analysis was conducted on 537 patients with indwelling catheters admitted to the neuro-intensive care unit. Patients' general information, lab...
Article
Full-text available
The rapid development of perovskite solar cell (PSC) makes its best research efficiency comparable to that of Silicon solar cells. However, the large‐scale application of PSCs still faces the dual challenges of improving efficiency and stability. Herein, an interfacial modifier of polyethylene glycol dodecyl ether (Brij) with ether group (C–O–C) an...
Article
Full-text available
Tianwen-1 probe is equipped with the descent camera. Descent images are very special and characteristic. Many image processing missions can be done when parameters of descent camera are known. Therefore, the self-calibration method for descent camera based on the structure from motion (SfM) is proposed. The relative orientation model of the oblique...
Article
Full-text available
Global sustainable agricultural systems are under threat, due to increasing and co-occurring drought and salinity stresses. Combined effects of these stresses on agricultural crops have traditionally been evaluated in small-scale experimental studies. Consequently, large-scale studies need to be performed to increase our understanding and assessmen...
Article
In today’s datacenters (DCs), IT resources virtualization is leveraged to realize Network Function Virtualization (NFV) over general-purpose servers. Meanwhile, most of the service providers (SPs) are planning to use Virtual Network Functions (VNFs) to provide agile and flexible network services. In service provisioning, the VNF selection and mappi...
Article
Electronics have an increased thermal flow density due to the development of miniaturization and high integration. Effective heat management is a pressing technological issue that must be addressed. Ionic wind cooling technology is gaining popularity as a means of improving local heat dissipation. Ionic wind blowers with two non-uniform ‘needles-to...
Article
Full-text available
Nano Bi particles were subjected to chemical modification. The modified Bi particles were examined via field emission transmission electron microscopy, X-ray diffraction, infrared spectroscopy, and thermogravimetric analysis. Liquid paraffin oil (LPO) lubricants with different Bi/SiO2 contents were prepared through dispersion method by adding the m...
Article
The design and fabrication of versatile covalent organic frameworks (COFs) with multiple properties for diverse applications is highly desirable. Here, the difunctional COFs material g–C18N3–COF was prepared and modified to be applied for efficient photocatalytic degradation of Rhodamine B (RhB) and pH detection, respectively. Owing to the triazine...
Article
Rosacea is a common chronic facial inflammatory disease that affects millions of people worldwide. Due to the unclear etiology of rosacea, effective treatments are limited. Celastrol, a plant-derived triterpene, has been reported to alleviate inflammation in various diseases. However, whether celastrol exerts protective effects in rosacea remains t...
Article
Much research has been done to predict batteries' cyclic aging state-of-health (SOH) over the entire state-of-charge (SOC) range in constant-voltage and constant-current charge-discharge mode. Considering that the battery cycle is usually carried out in part of the SOC range in the actual use process, this paper further studies the cycle degradatio...
Article
2D covalent organic frameworks (COFs) are a promising candidate in the field of solar-driven steam generation (SSG), though their applications are limited by the narrow-band spectral response, complicated framework design, expensive building blocks, and weak chemical stability in current stage. Herein, a composite photothermal material Tp[email pro...
Article
Exploring affordable, durable, and effective electrocatalysts for methanol oxidation reaction (MOR) is of great importance to the industrial application of direct methanol fuel cells. Herein, a three-dimensional (3D) porous PtCu catalyst is synthesized by a facile and effective galvanic replacement method, which exhibits high activity and durabilit...
Article
Full-text available
Background: The lack of standardized delineation of lymph node station in lung cancer radiotherapy leads to nonstandard clinical target volume (CTV) contouring, especially in patients with bulky lump gross target volume lymph nodes (GTVnd). This study defines lymph node region boundaries in radiotherapy for lung cancer and automatically contours l...
Article
Full-text available
Sensitive and stable X‐ray detectors are essential for medical diagnostics, nondestructive industrial inspection, and security inspection. Halide perovskite X‐ray detectors are promising for direct X‐ray detection because of their high sensitivity and low limit of detection (LoD). However, their high and unstable dark current, caused by notorious i...
Article
Graphene (Gr)‐assisted epitaxy of semiconductors has been demonstrated as a revolutionary strategy for the fabrication of nitride materials and flexible devices. However, till now, most of the GaN epitaxy assisted by Gr is performed on thermally stable foreign substrates because Gr suffers obvious deterioration due to the decomposition of GaN subst...
Article
A process for recovering Co and preparing microspherical Co3O4 through NH3 distillation and phase transformation from ammoniacal solution was investigated. As the basis of thermodynamics, the solubility of Co at different NH3 and CO3²⁻ concentrations was studied, and then the effects of different NH3 distillation conditions on Co recovery rate were...
Article
The present work investigates the kinetics of catalytic ammonia synthesis in a N2/H2 mixture activated by a nanosecond pulsed discharge (NSD) plasma experimentally and numerically. X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS) are combined to characterize the morphology...
Article
Full-text available
Introduction: Chongqing is among the areas with the highest rubella incidence rates in China. This study aimed to analyze the temporal distribution characteristics of rubella and establish a forecasting model in Chongqing, which could provide a tool for decision-making in the early warning system for the health sector. Methodology: The rubella m...
Article
Use of 2D materials as buffer layers has prospects in nitride epitaxy on symmetry mismatched substrates. However, the control of lattice arrangement via 2D materials at the heterointerface presents certain challenges. In this study, the epitaxy of single‐crystalline GaN film on WS2‐glass wafer is successfully performed by using the strong polarity...
Article
Ethanol as a fuel for direct ethanol fuel cells (DEFCs) has the advantages of being highly energetic, environmentally friendly, and low−cost, while the slow anodic ethanol oxidation reaction (EOR), intermediate poisoning effect, and incomplete oxidation of ethanol became obstacles to the development of DEFCs. Herein, a 2D ternary cyclic Pd3Pt1Rh0.1...
Article
Full-text available
Novel covalent organic framework (COF) composites containing a bipyridine multimetal complex were designed and obtained via the coordination interaction between bipyridine groups and metal ions. The obtained Pt and polyoxometalate (POM)–loaded COF complex (POM–Pt@COF–TB) exhibited excellent oxidation of methane. In addition, the resultant Co/Fe–bas...
Article
Purpose This paper aims to investigate how ball milling (BM) and load influence transfer film on counterbody and the correlation between transfer film and tribological properties of copper-based composites. Design/methodology/approach The copper-based mixed powders preprocessed by BM for different times were used to manufacture sintered materials....
Article
Full-text available
In this work, a three-dimensional (3D) graphene/manganese dioxide nanocomposite (PGA/MnO2) with a hierarchically porous structure was prepared by facile steam activation and MnO2 deposition strategies. The as-prepared PGA/MnO2 exhibited a 3D architecture with a high surface area of 490 m² g–1. By characterization of morphology and structure of PGA/...
Article
Bicycles and electric bike riding have reshaped the transportation system worldwide and have significantly contributed to road traffic injuries. However, the risk factors associated with such injuries remain unclear. Therefore, this systematic review aimed to update and summarize the available evidence regarding risk factors that have been associat...
Article
Functionalized covalent organic frameworks (COFs) materials are used in various fields due to their unique properties. Herein, the reported pyrimidine-functionalized COFs sample named COF-Pyr is selected as the matrix to provide two COFs-based metal composites [email protected] and [email protected], which are respectively synthesized through metal...
Article
The rapid development of perovskite solar cells (PSCs) makes it one of the most competitive photovoltaic devices in the field of new energy. However, the suboptimal performance and poor stability caused by numerous defects are still the main factors limiting the development of PSCs. Herein, a polarized molecule additive of 4-(aminomethyl) benzonitr...
Preprint
Deep neural networks have exhibited remarkable performance in image super-resolution (SR) tasks by learning a mapping from low-resolution (LR) images to high-resolution (HR) images. However, the SR problem is typically an ill-posed problem and existing methods would come with several limitations. First, the possible mapping space of SR can be extre...
Article
Background Circulating extracellular vesicles (EVs) are recognized as a promising source of cancer biomarkers. We previously reported that tumor cell-released autophagosomes, a new subgroup of EVs expressing the mature autophagosome-specific marker LC3B (LC3B⁺ EVs), are critical modulators of host anti-tumor immunity. This study aimed to assess the...
Article
Full-text available
Cadmium (Cd) pollution has detrimental effects on the ecological environment and human health. Currently, phytoremediation is considered an environmentally friendly way to remediate Cd pollution. The application of transgenic plants to remediate soil pollution is a new technology that has emerged in recent years. In this study, PyWRKY75 was isolate...
Article
Most engineering materials are chosen based on their fracture toughness rather than their strength. However, water molecules in air would interact with these materials and affect their fracture toughness, especially for the biomass materials. Bamboo is an excellent engineering material, and the effect of water content on its fracture toughness was...
Article
The electrical properties of the perovskite oxide thermoelectric material SrTiO3(STO) should be improved in order to realize its thermoelectric application due to its intrinsic insulation characteristics. The bulk STO materials usually optimize their electrical properties by annealing in reducing environment after synthesis. However, this method in...
Article
This study proposed a high sensitivity optical fiber relative humidity sensor (OFHS). Besides, a fullerene derivative, C60-THAM, was synthesized and firstly reported as a molecule receptor in the OFHS. Compared with the widely researched carbon-based materials in OFHS, the C60-THAM film has abundant amino dangling bonds, hence emerges naturally as...
Article
Full-text available
A novel fluorescent covalent organic framework containing trimethyl silicon group (COF-TMS) was designed and prepared via the Povarov reaction to be used to detect fluorine ions, on account of the interaction between the silicon and the fluorine ions. Trimethyl silicon, as an electron-donating functional group, was replaced with hydrogen atom and t...
Article
Full-text available
Background With the “Belt and Road” initiative, more Chinese citizens have gone abroad to engage in overseas labor activities. Few studies have investigated the prevalence of non-infectious diseases among Chinese overseas workers. This study seeks to fill the gap and illustrate the relevant diseases in a population of Chinese overseas workers. Met...
Article
Designing low-cost, high-efficiency hydrogen evolution reaction (HER) catalysts to break the bottleneck of current electrocatalytic water splitting processes remains a formidable challenge. Here, we report a strong metal-support interaction (SMSI) effect constructed with ruthenium nanorods (Ru NRs) loaded in porous titanium nitride (TiN) nanosheet...
Article
The perovskite solar cells (PSCs) is one of the fastest growing photovoltaic technology. However, the further improvement of performance and stability is the bottleneck issue of its large-scale manufacturing. The controllable oxidation of spiro-OMeTAD is significant for high-performance PSCs. Here, a low-cost and facile strategy by doping 3-Chlorop...
Article
Objective: To investigate the contamination of antibiotic-resistant bacteria in air of different departments in hospital. Methods: From 2018.07 to 2021.06, 191 samples of the air-conditioning filter dust in three hospitals were collected. Antibiotic-resistant bacteria were isolated from the accumulated dust. The drug sensitivity test was conduct...
Article
Full-text available
Green colour preservation of bamboo surface is an efficient approach to improve the aesthetic and economic values of bamboo. Previous research on bamboo green colour preservation used large amounts of chemicals, which limited its practical production. In this study, sand blasting was used as a pretreatment method during the green colour preservatio...
Article
The novel biomarker, insulin-like growth factor binding protein 7 (IGFBP7), is used clinically to predict different types of acute kidney injury (AKI) and has drawn significant attention as a urinary biomarker. However, as a secreted protein in the circulation of patients with AKI, it is unclear whether IGFBP7 acts as a key regulator in AKI progres...
Article
Full-text available
Background The rapid emergence and global spread of COVID-19 have caused substantial global disruptions that have impacted malaria programs worldwide. Innovative strategies to enable countries aiming to eliminate malaria as well as those that are already certified as malaria-free, are needed to address malaria importation in the context of the COVI...
Article
This paper addresses the problems of mapping virtual optical networks (VONs) onto space-division-multiplexing elastic optical data center networks (SDM-EODCNs). We first propose the concepts of link importance degree (LID) and node importance degree (NID) and put forward the calculation formula to optimize the VONs mapping, by which VON mapping app...
Article
Polymer microspheres have been widely used as a stationary phase in liquid chromatography. We characterized the properties of the novel polyionic liquid microspheres prepared and explored their application as a stationary phase in liquid chromatography. Cytosine, uracil, benzene, benzene homologs and alkaloids were successfully separated by liquid...
Article
There is a pair of binocular cameras for navigation onboard the Chang’e-4 lunar rover. Although the cameras were calibrated before launch, it is necessary to calibrate them again after landing on the moon, especially the external parameters. In this article, an image of a solar panel containing parallel-line features is used for recalibration. Acco...