Results 71 to 80 of about 913,825 (275)

MXene‐Based Electrocatalysts for Sustainable Nitrogen Conversion: From Ammonia Oxidation to Nitrogen and Nitrate Reduction

Advanced Materials Interfaces, EarlyView.
This review compares MXene‐based electrocatalysis for ammonia oxidation, nitrogen reduction, and nitrate reduction, highlighting reaction‐dependent differences in catalytic performance and stability. MXenes are generally more compatible with cathodic nitrogen and nitrate reduction, whereas anodic ammonia oxidation raises stability concerns.
Afaf Salah Eid, Alaa M. Ibrahim, Soon Hyung Kang   +2 more
wiley   +1 more source

Precision Surface Grinding of Silicon Carbide

International Journal of Engineering Materials and Manufacture, 2016
Silicon carbide (SiC) is well known for its excellent material properties, high durability, high wear resistance, light weight and extreme hardness. Among the engineering applications of this material, it is an excellent candidate for optic mirrors used ...
Mohamed Konneh
doaj   +1 more source

3D‐Printed Corneal Substitutes: Materials, Fabrication, and Preclinical Progress

Advanced Materials Technologies, EarlyView.
Successful clinical translation of 3D‐printed corneal substitutes relies on the interplay between the bioink properties, cellular component, and the fabrication process. These factors influence the critical properties of the construct, including optical transparency, mechanical stability, suture retention, that ultimately govern long‐term stromal ...
Shadi Moshayedi, Ashley Vazquez, Alexander J. Choi, Dimitrios Karamichos, Jayoung Kim   +4 more
wiley   +1 more source

Optimal design and performance evaluation of grinding wheels with triply periodic minimal surface lattice structure

Journal of Materials Research and Technology
High-performance grinding wheels are critical tools for precision surface generation. In precision grinding processes, the coolant supply at the wheel-workpiece interface is critical for reducing grinding temperature and detrimental friction.
Meng Ye, Dong Wang, Liping Wang, Yun Zhang, Xuekun Li   +4 more
doaj   +1 more source

Wood‐Derived Nanocellulose‐Biocarbon Fresnel‐Zone Plate Lenses for Sub‐THz Frequency Applications

Advanced Materials Technologies, EarlyView.
Wood‐derived nanocellulose and lignin‐based biocarbon were combined to fabricate fully bio‐based Fresnel zone plate (FZP) lenses for sub‐terahertz frequencies. These sustainable FZP lenses exhibit low dielectric loss and high directivity, achieving performance comparable to that of metallic references, and remain functional under environmental stress ...
Riikka Haataja, Mikko Kokkonen, Niina Halonen, Sami Myllymäki, Umair Rafique, Mandeep Singh, Ossi Laitinen, Heli Jantunen, Kristiina Oksman, Henrikki Liimatainen   +9 more
wiley   +1 more source

Kinematic model of normal-trach grinding for spherical parts

Jin'gangshi yu moliao moju gongcheng, 2016
According to current requirements of efficient and precision machining for spherical parts which are made with difficult-to-machine materials and used in aerospace,high-speed rail and other industrial fields,the machining principle and method for ...
LIU Wei, DENG Chaohui, WAN Linlin
doaj  

Investigate on surface/subsurface damage mechanisms and manufacturability of ultra-smooth surface in ultra-precision ductile grinding of sapphire optics

Journal of Materials Research and Technology
Sapphire is a kind of high hard-brittle transparent single crystal material with excellent comprehensive properties in the aspects of mechanics, thermology and optics, which can be widely used in aviation, aerospace, medical treatment, high-energy laser ...
Sheng Wang, Qinghe Zhang, Qingliang Zhao, Ming Zhou   +3 more
doaj   +1 more source

Active Tailstock for Precise Alignment of Precision Forged Crankshafts during Grinding

Procedia CIRP, 2013
Within the Collaborative Research Centre 489 at the Leibniz Universitaet Hannover a new and innovative process chain for the manufacture of crankshafts is being investigated. By burr-free and near-net-shaped precision forging the process chain can be significantly shortened.
Denkena, B., Gümmer, O.
openaire   +1 more source

Intelligent Micro/Nanorobots for Targeted Interventional Therapy: From Bench to Clinic

Advanced Robotics Research, EarlyView.
Zirui Zhang et al. reviewed the application and challenges of mobile nanomachines in interventional therapy. By converting exogenous energy, including chemical, magnetic, optical, and ultrasonic sources, into mechanical forces, micro/nanorobots (MNRs) enable precise actuation at unprecedented scales. Evolving far beyond traditional drug delivery, these
Zirui Zhang, Yu Dong, Yongsheng Du, Rui Gao, Lin Zhang, Fei Tong   +5 more
wiley   +1 more source

A study of the convection heat transfer coefficients of grinding fluids [PDF]

, 2008
By using hydrodynamic and thermal modelling, the variation of the convection heat transfer coefficient (CHTC) of the process fluids within the grinding zone has been investigated.
Jin, T., Stephenson, David J.
core   +1 more source