Results 81 to 90 of about 23,411 (311)

Fiducial-Aided Robust Positioning of Optical Freeform Surfaces

Micromachines, 2018
Form characterization of a machined optical freeform surface demands accurate alignment of the sampled measured data points on the machined surface, and they are compared with the designed geometry of the surface through positioning.
Shixiang Wang, Chi Fai Cheung, Mingjun Ren, Mingyu Liu   +3 more
doaj   +1 more source

Performance improvement of the LM device and its application to precise measurement of motion trajectories within a small range with a machining centre [PDF]

, 2012
In order to apply the LM device previously developed to precisely measuring small motion trajectories located on the different motion planes, three major improvements are successfully performed under the condition of completely maintaining the advantages
Cheng, Kai, Huo, Dehong, Kubo, Akio, Li, Dayou, Lin, Chao, Qiu, Hua, Yue, Yong   +6 more
core   +2 more sources

Auto‐Generated Valence States in Electrocatalysts for Boosting Oxygen and Hydrogen Evolution Kinetics in Alkaline Water/Alkaline Seawater/Simulated Seawater/Natural Seawater

Advanced Functional Materials, EarlyView.
This review systematically highlights the latest achievements in mixed‐valence states relevant to hydrogen and oxygen evolution reactions, providing essential insights into future directions and methods for large‐scale practical implementation. This critical review is expected to provide an overview of recent advancements in diverse valence‐state metal
Jitendra N. Tiwari, Gokul Bhaskaran, Krishan Kumar, Yun Suk Huh, Young‐Kyu Han   +4 more
wiley   +1 more source

Research on the Grinding Performance of an Electroplated Coarse-Grained Diamond Grinding Wheel by Dressing

Machines
The coarse-grained electroplated diamond grinding wheels is increasingly favored in precision grinding of hard and brittle materials owing to its high material removal efficiency, high wear resistance and steady surface contour accuracy.
Yongqi Xia, Shibo Deng, Mingtao Wu, Binkun Ni   +3 more
doaj   +1 more source

Determination of micro-scale plastic strain caused by orthogonal cutting [PDF]

, 2008
An electron beam lithography technique has been used to produce microgrids in order to measure local plastic strains, induced during an orthogonal cutting process, at the microscopic scale in the shear zone and under the machined surface. Microgrids with
Allais, Altintas, Beynon, Bitans, C. Pinna, Childs, Delaire, H. Ghadbeigi, Hernandez Castillo, Iwata, J.R. Yates, Jeelani, Jeelani, Karimi, Koshelev, Kurt, Lee, Lin, Madhavan, Mamalis, Merchant, Ng, Obata, Palmer, Pinna, S.R. Bradbury, Sadat, Sadat, Shet, Shih, Sun, Zhang   +31 more
core   +1 more source

Formation of Stable Amorphous Calcium Phosphate and Collagen Assemblies by a Versatile Spray‐Drying Approach

Advanced Functional Materials, EarlyView.
Amorphous calcium phosphate (ACP) microparticles with long‐term and thermal stability are prepared with or without collagen using a scalable one‐pot spray‐drying process. Under simulated physiological conditions, they crystallize into biomimetic bone mineral and, when combined with collagen, form extrudable, fibrillar bone‐like 3D constructs.
Camila Bussola Tovani, Nessma Bennaceur, Celina Benkhellat, Tristan Georges, Clara Doisneau, Vaskar Sardhalia, Thierry Azaïs, Flora Lemaire, Halima Kerdjoudj, Mohamed Selmane, Capucine Sassoye, Marie Albéric, Cédric Boissière, Nadine Nassif   +13 more
wiley   +1 more source

Modeling and Simulation of a Machining Process Chain for the Precision Manufacture of Polar Microstructure

Micromachines, 2017
This paper presents a functional microstructured surface, named Polar Microstructure. Polar microstructure is a three dimensional (3D) structured surface possessing a pattern of distribution of latitude and longitude micro-topographies with geometrical ...
Chenyang Zhao, Chi Fai Cheung, Mingyu Liu   +2 more
doaj   +1 more source

Towards an Implantable Vestibular Prosthesis: The Surgical Challenges [PDF]

, 2007
Published ...
Constandinou, T G, Doumanidis, C C, Georgiou, J, Toumazou, C   +3 more
core   +1 more source

Machining of Micro-parts by Ultra-precision Milling Machine.

Journal of the Japan Society for Precision Engineering, 1996
The requirement of producing metallic micro-parts for micro-machine and/or micro-mechanism will be increased. The study deals with manufacturing of tiny parts in mm-size by use of micro-machining technique of an ultra-precision milling machine. The ultra-precision milling machine, consisting of Z-motion table, positional spindle on it as C-rotational ...
Yoshimi TAKEUCHI, Makoto NISHIE, Kiyoshi SAWADA, Toshio SATA   +3 more
openaire   +2 more sources

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source