Jian Li

Currently, the application of 3D-printed biomass-based carbon electrodes is hindered by their suboptimal performance. This study utilizes walnut shell powder as a carbon source and employs Selective Laser Sintering (SLS) technology for the efficient 3D printing of a double-helix carbon precursor. High-performance biomass-based carbon electrodes are...

Food packaging that impedes microbial growth and can be safely used is critical to attenuate food spoilage. Herein, a green berberine/phytate salt (BPA) is successfully synthesized and aggregated in polyvinyl alcohol (PVA) film to impart fluorescent and photodynamic antimicrobial properties. Compared to berberine hydrochloride (BHL), BPA exhibited...

The purpose of this study is to investigate the influence of pre-heating characteristics on the mechanical properties and forming process of selective laser sintering (SLS) printed PES-HmA samples. An experimental setup with four heating tubes was designed to study the pre-heating temperature distribution on the powder bed. The pre-heating temperat...

Smart tags are used for monitoring the freshness of foods. However, they often lack significant color changes, and their accuracy needs to be improved. In this study, a poplar veneer with a natural pore structure was selected as a matrix to prepare a smart tag with high pH sensitivity for tracking the freshness of strawberries. The delignified vene...

At present, adhesives widely used in various industries are mainly synthesized from organic chemical raw materials, and research on replacing traditional chemical raw materials with renewable biomass resources to synthesize adhesives is urgently needed. Adhesives possessing colloidal properties are highly favored due to their distinctive self-assem...

In this study, porous carbon electrodes were prepared by using walnut shells and phenolic resin as matrix materials, combined with selective laser sintering technology and the carbonization process. The effects of different ratios and temperatures on the macroscopic morphology, graphitization degree, electrical conductivity and pore structure of th...

Based on the previously designed hand rehabilitation exoskeleton structure, we propose a wearable soft hand rehabilitation device (HRD) actuated by shape memory alloy (SMA) wires. In order to accommodate the force and strain required for finger flexion and extension, the HRD with SMA wires-driven range extension mechanism has been redesigned to be...

Purpose Selective laser sintering (SLS) is an essential technology in the field of additive manufacturing. However, SLS technology is limited by the traditional point-laser sintering method and has reached the bottleneck of efficiency improvement. This study aims to develop an image-shaped laser sintering (ISLS) system based on a digital micromirro...

There is interest in developing sustainable materials displaying circularly polarized room-temperature phosphorescence, which have been scarcely reported. Here, we introduce biobased thin films exhibiting circularly polarized luminescence with simultaneous room-temperature phosphorescence. For this purpose, phosphorescence-active lignosulfonate bio...

In response to the strong demand for the development of large-format digital light processing (DLP) 3D printing technology, the use of multiple ultraviolet (UV) fixed splicing poses challenges such as high costs and limitations in print size. Therefore, this paper proposes a stamping-type DLP surface splicing 3D printing method, namely, achieving t...

Technologies enabling passive daytime radiative cooling and daylight harvesting are highly relevant for energy-efficient buildings. Despite recent progress demonstrated with passively cooling polymer coatings, however, it remains challenging to combine also a passive heat gain mechanism into a single substrate for all-round thermal management. Here...

Converting CO2 with various epoxides to cyclic carbonates is extremely important. However, most of catalysts for such conversion either require complicated fabrication or are obtained from unsustainable sources. Motivated by this problem, we prepare biomass-based “all-in-one” carbon dots as nano-organocatalysts for firstly converting CO2 to cyclic...

Polyvinyl alcohol solvent-free adhesives (PSFAs) possess high bonding strength, simple preparation, high cost-effectiveness, a long storage time, and convenient transportation.

The synergistic effect of hierarchically porous structures, advanced mass and charge transport abilities, and abundant active centers in self-supported carbonized wood electrodes is beneficial for boosting both the OER and HER.

This study intends to enhance the mechanical strength of wood–plastic composite selective laser sintering (SLS) parts by using a sustainable composite, peanut husk powder (PHP)/poly ether sulfone (PES) (PHPC). The study aims to address agricultural waste pollution by encouraging the eco-friendly utilization of such waste in SLS technology. To ensur...

Aiming at the issues of complex manufacturing processes and unstable bonding after individual manufacturing in current soft manipulator forming methods, this study investigated the mechanical characteristics of a pneumatically driven soft-picking manipulator formed by the stereolithography (SLA) process and evaluated its application in grasping fru...

Background This retrospective study aims to validate the effectiveness of artificial intelligence (AI) to detect and classify non-mass breast lesions (NMLs) on ultrasound (US) images. Methods A total of 228 patients with NMLs and 596 volunteers without breast lesions on US images were enrolled in the study from January 2020 to December 2022. The p...

In the laser sintering (LS) printing process, a printed part is formed by sintering layer-by-layer on the powder bed. Thus, it is necessary to consider the dimensional accuracy of the laser-sintered powder bed as an important evaluation index. In this paper, a generalized powder bed–size accuracy compensation model is proposed for non-crystalline t...

Harris Hawks Optimization (HHO) is a novel meta-heuristic algorithm that imitates the predation characteristics of Harris Hawk and combines Lévy flight to solve complex multidimensional problems. Nevertheless, the basic HHO algorithm still has certain limitations, including the tendency to fall into the local optima and poor convergence accuracy. C...

A highly distinguishable indicator film was developed based on sodium carboxymethyl starch, κ-carrageenan, carboxylated cellulose nanocrystals and mulberry pomace particles (MPPs). As the content of MPPs increased from 0 % to 6 %, the tensile strength decreased from 11.71 MPa to 5.20 MPa, the elongation at break increased from 26.84 % to 43.76 %, r...

When using selective laser sintering to print parts with thin-walled structures, the thermal action of the laser can cause thermal stresses that lead to plastic deformation, resulting in large warpage and dimensional deviations. To address this issue, this study proposes a bottom support method for selective laser sintering. The impact of lattice-t...

A cellulose-based matrix for monitoring milk freshness (MF) was produced from rice straw particles (RSPs) in a 0.125–0.150 mm that was bis-quaternized to attach bromocresol purple (BP) as a sensor. Under alkali conditions, the obstinate structure of the rice straw had opened, thereby improving the accessibility of the cellulose. Bis-quaternization...

High-performance elastomers have gained significant interest because of their wide applications in industry and our daily life. However, it remains a great challenge to fabricate elastomers simultaneously integrating ultra-high mechanical strength, toughness, and excellent healing and recycling capacities. In this study, ultra-strong, healable, and...

Low-cost miniaturized laser sintering equipment remains lacking at present; therefore, the development of laser sintering technology and its widespread applications are significantly hindered. Traditional laser sintering equipment is composed of a carbon dioxide laser, water cooling system, powder-box-heating device, and thermal insulation device....

As a special group of plants, vine plants can be spontaneously fixed with supports by winding or adsorbing. If the vine winding behavior is combined with a soft actuator, it is expected to improve the performance of the soft actuator in unstructured environments. Based on the pneumatic network structure, this study proposes a soft actuator with a s...

The properties of superhydrophobic wood depend heavily on the design of micro roughness and low-surface-energy chemical components via various fabrication strategies. However, the commercial development of these materials is still...

This study aims to utilize silicon carbide (SiC) powder and phenol-formaldehyde resin (PF) as the primary raw materials to prepare phenol-formaldehyde coated silicon carbide composite (PCSC) using a thermal coating method. Then, single-factor experiment and orthogonal experiment were used to optimize the process parameters of selective laser sinter...

Aquila Optimizer (AO) and Artificial Rabbits Optimization (ARO) are two recently developed meta-heuristic optimization algorithms. Although AO has powerful exploration capability, it still suffers from poor solution accuracy and premature convergence when addressing some complex cases due to the insufficient exploitation phase. In contrast, ARO pos...

Intelligent films monitoring food quality are potential to use in people’s life. The safety and sensitivity are of great importance. In this study, a dual synergistic design was developed to construct a safely and sensitively smart film in which quaternary ammonium groups modified rice straw fiber (CRSF) attached bromothymol blue (BTB) was embedded...

Water-transport based on biomimetic self-propelled directional water transport materials have attracted wide attention but are limited by low transport speed, costly and complicated preparation, and scaling difficulty. By retaining native cellulose microfibril structure within wood cell walls and their controlled shrinkage, we constructed a self-pr...

Unlike most animals, plants fail to move bodily at will. However, movements also occur in every single part of plants out of energy and nutrients needs, spanning from milliseconds to hours on a time scale. And with the growing understanding of plant movement in the academic community, bionic soft robots based on plant movement principles are increa...

Objective: We aim to establish a deep learning model called multimodal ultrasound fusion network (MUF-Net) based on gray-scale and contrast-enhanced ultrasound (CEUS) images for classifying benign and malignant solid renal tumors automatically and to compare the model’s performance with the assessments by radiologists with different levels of exper...

Although intelligent films containing various anthocyanins have exhibited a good pH-response, high light-transmittance makes it difficult to accurately observe color changes in monitoring food freshness. In this study, black corn seed powder (BCSP) containing anthocyanins and starch, lipid and fibers, was used to provide κ-carrageenan film (κCF) wi...

Aquila Optimizer (AO) and African Vultures Optimization Algorithm (AVOA) are two newly developed meta-heuristic algorithms that simulate several intelligent hunting behaviors of Aquila and African vulture in nature, respectively. AO has powerful global exploration capability, whereas its local exploitation phase is not stable enough. On the other h...

The material constriction is one of the important factors that influence the forming accuracy of selective laser sintering (SLS). Currently, in order to reduce the shrinkage and improve the quality of products, the optimal combination of machining process parameters is mainly determined by numerous experiments. This often takes valuable time and co...

In this work, carbon nanotubes (CNT)/polyethersulfone (PES) polymer composites were prepared by selective laser sintering, and the effects of microwave treatment on mechanical properties and tensile fracture surfaces of the composites were investigated. The experimental results indicated that tensile strength and bending strength of the composites...

Honey badger algorithm (HBA) is a recently developed meta-heuristic algorithm, which mainly simulates the dynamic search behavior of honey badger in wild nature. Similar to other basic algorithms, HBA may suffer from the weakness of poor convergence accuracy, inadequate balance between exploration and exploitation, and ease of getting trapped into...

As one of the hazardous heavy metal ion pollutants, Cr(VI) has attracted much attention in the sewage treatment research field due to its wide distribution range and serious toxicity. In this paper, cellulose fibers were prepared by wet spinning and followed by freeze drying, resulting in large porosity. Subsequently, in-depth sulfhydryl modificati...

(1) Objective: To evaluate myocardial injury by observing the different parameters of global myocardial work (MW) by left ventricular pressure-strain loop (PSL) analysis in patients with chronic kidney disease (CKD). (2) Methods: According to the left ventricular mass index, the study patients with CKD were further divided into two groups: the left...

Purpose The range of applications of the currently available biomass selective laser sintering (SLS) parts is limited and low-quality. This study aims to demonstrate the effects of the various processing parameters on the dimensional accuracy, bending strength, tensile strength, density and impact strength of the Prosopis chilensis /polyethersulfon...

Background A noninvasive left ventricular (LV) pressure-strain loop (PSL) provides a new method to quantify myocardial work (MW) by combining global longitudinal strain (GLS) and LV pressure, which exerts potential advantages over traditional GLS. We studied the LV PSL and MW in patients with type 2 diabetes mellitus (T2DM). Methods This cross-sec...

Switchable optical transparency is an intrinsic property for solid–liquid phase change materials (PCMs) during phase change processes. However, due to non-transparent porous confinement materials and core-shell structures, the synthesis of shape-stabled PCMs typically sacrifices their switchable optical transparency. Here, we present a copolymeriza...

The research of bionic soft robot is a complex system engineering, including soft matrix material, soft actuator, soft sensor and bionic control system. Unlike most animals, plants cannot move in whole voluntarily. However, for the purpose of energy and nutrition, various parts of the plant body also carry out various movements, which vary from mil...

Electromagnetic radiation pollution has become more serious in our daily life. The portable, flexible materials with an ultrahigh electromagnetic interference shielding effectiveness (EMI SE) are highly desirable to meet the needs of different applications. In this study, such a material was prepared by combining cellulose paper substrate with an e...

Herein, the tensile strength of selective laser sintering thermoplastic polyurethane/carbon nanotube (TPU/CNT) composites was improved, and reasonable process parameters, addressing the delamination of TPU/CNT parts, smoke and other problems caused by materials’ decomposition in the processing process, were determined. First, the TPU/CNT powder was...

Purpose This paper aims to propose a suitable atomizing solidification chitosan (CS) gel liquid extrusion molding technology for the three dimensional (3D) printing method, and experiments verify the feasibility of this method. Design/methodology/approach This paper mainly uses experimental means, combined with theoretical research. The preparatio...

Background: This study aimed to improve the understanding of metanephric adenoma (MA) by retrospective analysis of contrast-enhanced ultrasound (CEUS) findings and clinicopathological characteristics of MAs. Methods: Gray-scale ultrasound (US) and CEUS findings of 7 adult MA patients, confirmed by postoperative pathology, were summarized via col...

Current wood-plastic materials available for selective laser sintering (SLS) are limited and often suffer from low-quality and mechanical strength. In this study, a new composite of peanut husk powder (PHP)/polyether sulfone (PES) was developed for SLS additive manufacturing (AM). To use the biomass waste materials in AM technology, such as furnitu...

Soft robots are concerned by researchers due to several characteristics, such as high adaptability in complex unstructured environments, safe interaction with environments, and a high degree of dexterity. The deformability and dexterity of the octopus arm are remarkable and interesting for the development of bioinspiration soft robots. In this stud...

Mechanically robust polyurethanes and polyureas with excellent healing and recycling capacities have an extended service life, and can reduce raw material consumption and environmental pollution. In this work, healable, recyclable and mechanically super-strong poly(urea-urethane)s (PUUs) are conveniently fabricated via cross-linking isocyanate-term...

Hand is one of the most flexible and useful organs of the human body. However, cases of hand function loss due to diseases and accidents abound, which brings a lot of inconvenience to patients’ lives. This paper introduced a flexible hand movement device (HMD) driven by shape memory alloy (SMA) wires, which is compact, lightweight, and easy to use...

To solve the problem of the low mechanical properties of wood-plastic composites (WPC) by selective laser sintering (SLS), a tiny amount of Al powders were added into WPC as the reinforcement in this work. Both the mechanical properties and the microstructure of SLS parts were investigated. The results showed that the bending properties of parts fi...

Conductive polymer composites (CPCs) combining with specific microstructures (micropores, microcracks, etc.) can exhibit unique resistance response changes, which can be widely regarded as an effective way to improve sensing performance. This study takes advantage of the characteristics of the formation of tiny pores between crystal grains during s...

To tackle the crisis of fossil energy shortage and global warming, exploring aseries of efficient and portable devices for the conversion and storage of clean and renewable energy sources has remained a significant topic. Supercapacitors as an advanced energy storage device have the properties of portability and stable performance, electrode materi...

Owing to advantageous properties attributed to well‐organized structures, multifunctional materials with reversible hierarchical and highly ordered arrangement in solid‐state assembled structures have drawn tremendous interest. However, such materials rarely exist. Based on the reversible phase transition of phase‐change materials (PCMs), phase‐cha...