Results 61 to 70 of about 23,411 (311)

Development of a high-performance cutting device based on hybrid actuation for ultra-precision machining

Materials & Design, 2023
In ultra-precision cutting, the inherent working frequency and positioning accuracy of actuators are decisive. It is challenging to generate multi-scale cutting motions with high accuracy on hierarchical scale simultaneously. In this study, a novel micro
Zhuoxuan Zhuang, Hanheng Du, Wai Sze Yip, Tengfei Yin, Zejia Zhao, Zhiwei Zhu, Suet To   +6 more
doaj   +1 more source

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Direct micro-structuring of Si(111) surfaces through nanosecond-laser Bessel beams

, 2019
We present here a nanosecond laser ablation of Si(111) wafer with diffraction-free (Bessel-$J_0$) beams. First, the Axicon a conical shaped optical element for beam shaping is characterized with a visible and infrared light sources.
Demirci, Erkan, Kaya, Elif Turkan Aksit, Sahin, Ramazan   +2 more
core   +1 more source

Wear characteristics of PCBN tools in ultra-precision machining of stainless steel at low cutting speeds [PDF]

, 2003
Polycrystalline cubic boron nitride (PCBN) cutting tools are widely used in the ultra-precision machining of stainless steel mould inserts for the injection moulding of optical lenses.
B.K.A. Ngoi, Liew, Willey Yun Hsien, Y.G. Lu   +2 more
core   +1 more source

Towards Defect Phase Diagrams: From Research Data Management to Automated Workflows

Advanced Engineering Materials, EarlyView.
A research data management infrastructure is presented for the systematic integration of heterogeneous experimental and simulation data required for defect phase diagrams. The approach combines openBIS with a companion application for large‐object storage, automated metadata extraction, provenance tracking and federated data access, thereby supporting ...
Khalil Rejiba, Sang‐Hyeok Lee, Christina Gasper, Martina Freund, Sandra Korte‐Kerzel, Ulrich Kerzel   +5 more
wiley   +1 more source

Machinability of MoS₂ after Oxygen Plasma Treatment under Mechanical Scanning Probe Lithography

Crystals
The surface of molybdenum disulfide (MoS2) underwent oxygen plasma treatment to enhance its machinability and mitigate the tearing effects commonly associated with mechanical forces on 2D materials. This treatment led to the oxidation of the atoms on the
Yang He, Xing Su, Kuo Hai
doaj   +1 more source

A new process chain for ultra-precision machining potassium dihydrogen phosphate (KDP) crystal parts [PDF]

, 2016
Potassium dihydrogen phosphate (KDP) crystal parts used in high power laser systems require high figure accuracy and high laser induced damage threshold (LIDT).
Guan, Chaoliang, Hu, Hao, Luo, Xichun, Tie, Guipeng   +3 more
core  

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

Novel Batch Polishing Method of Ceramic Cutting Inserts for Reducing Tool Wear

Chinese Journal of Mechanical Engineering
Ceramic cutting inserts are a type of cutting tool commonly used in high-speed metal cutting applications. However, the wear of these inserts caused by friction between the workpiece and cutting inserts limits their overall effectiveness.
Rui Gao, Chunjin Wang, Yee Man Loh, Xiaoliang Liang, Chen Jiang, Chi Fai Cheung   +5 more
doaj   +1 more source

Modelling and simulation of the dynamic cutting process and surface topography generation in nano/micro cutting [PDF]

, 2008
In nano/micro cutting process, the surface quality is heavily dependent on all the dynamic factors in machining including those from the material, tooling, cutting parameters, servo accuracy, mechanical structure deformation, and non-linear factors as ...
Cheng, K, Zhou, L
core