Results 61 to 70 of about 29,206 (304)

Optical profilometer with confocal chromatic sensor for high-accuracy 3D measurements of the uncirculated and circulated coins

Journal of Mechanical and Energy Engineering, 2018
The term optical profilometry is used in relation to group of methods used in a rapid, non-destructive, and non-contact assessment of surface topography. Those methods playing a signifi-cant role in the area of a modern advanced laboratory and industrial
W. Kapłonek, M. Sutowska, M. Ungureanu, K. Çetinkaya   +3 more
semanticscholar   +1 more source

Focus-wavelength encoded optical profilometer

, 1984
An optical profilometer is presented working on the principle of focus multiplexing by wavelength encoding. Decoding is performed by lateral dispersion.
P Poggi, F Quercioli, G Pedrini, G Molesini   +3 more
core   +1 more source

Use of a scanning optical profilometer for toolmark characterization [PDF]

, 2009
An optical profilometer has been used to obtain 3-dimensional data for use in two research projects concerning toolmark quantification and identification.
M. Morris, S. Zhang, Craft, J., L. S. Chumbley, Morris, Max, C. Fisher, Fisher, C., D. J. Eisenmann, J. Craft, A. Saxton, Chumbley, L. Scott, Zhang, Song, Eisenmann, David, Saxton, Andrew   +13 more
core   +1 more source

High‐Modulus Skeleton‐Reinforced PDMS Microstamps for Precision Transfer Printing of Microscale Devices

Advanced Functional Materials, EarlyView.
Elastomeric micropillars bend under contact loading, sliding microscale devices out of alignment during transfer printing. A hybrid PDMS stamp embeds a high‐modulus skeleton within each pillar while retaining a compliant contact surface. The reinforcement confines pillar deformation, suppressing interfacial sliding and preserving array registration on ...
Seol Ahn, Yulin Zhou, Jeongmin Seo, Seong Woo Hong, Sungyeon Kim, Seohyeon Kim, Haechang Ryu, Raudel Avila, Yei Hwan Jung   +8 more
wiley   +1 more source

Quantitative evaluation of surface roughness and mass loss for different types of composite resins used for clear aligner attachments: an in vitro study

Frontiers in Materials
ObjectivesDue to a lack of thorough published research, orthodontists’ clinical preferences influence the choice of composite resin for clear aligner attachments.
Rana R. Alshammari, Rana R. Alshammari, Nada Alshihah, Aljazi Aldweesh   +3 more
doaj   +1 more source

Blending With Insulating Polymers Enables Stable Anti‐Ambipolar Characteristics in n‐Type Organic Mixed‐Conductors for Heterogeneous Spiking Neurons

Advanced Materials, EarlyView.
A polymer blend of n‐type OMIEC P(gNDI‐gT2) with insulating PMMA yields mechanically stabilized, anti‐ambipolar organic electrochemical transistors (OECTs) with tunable ionic‐electronic transport. This blending allows low‐power, fast‐spiking heterogeneous Hodgkin–Huxley neurons, enabling biomimetic frequency deconvolution and reservoir computing, which
Zachary Laswick, Ariel Lifer, Catherine Beaumont, Liad Hayoun, Priscila Cavassin, Zeinab Hamid, Dilara Meli, William Dupont, Lincoln J. Lauhon, Iain McCulloch, Gitti L. Frey, Giovanni Maria Matrone, Jonathan Rivnay   +12 more
wiley   +1 more source

Surface profilometer for examining grain-boundary grooves [PDF]

, 1969
Surface profilometer, consisting primarily of commercially available components, measures surface topographical features accurately and precisely. It shows improvement over the interferometric technique in measurement of grain-boundary grooves formed ...
Jech, R. E., Ready, D. W.
core  

LONGITUDINAL TRUE PROFILE ESTIMATION BY A MOBILE PROFILOMETER FOR EXPRESSWAYS [PDF]

, 2014
加速度計を用いた簡易ラフネス測定装置である，モバイルプロフィロメータ(MPM)で得られるプロファイルは，IRI(国際ラフネス指数)のリアルタイム計算に最適化されているため，固有の路面波長検出特性を持つ．そこで，本研究では，波長検出特性をキャンセルする特殊な応答を持つ復元フィルタを，FFT(高速フーリエ変換)を用いた信号処理に基づき設計し，MPMによる絶対プロファイルの推定方法について検討した．その結果，MPMによる測定プロファイルは，水準測量との比較で，逆解析における相対誤差が20.6%から32.7 ...
大廣, 智則, 川村, 彰, 富山, 和也   +2 more
core   +1 more source

Development and implementation of an optical profilometer by laser triangulation

, 2021
Profilometers are instruments commonly used in surface metrology tasks. These instruments play a key role in the industry, such as in manufacturing and quality assurance.
Mendoza, Kevin, Quintero, Fernando J., Romero Pérez, Lenny Alexandra   +2 more
core   +1 more source

From Water Vapor Transmission Rate (WVTR) to Intrinsic Water Vapor Permeability (WVP)

Advanced Materials, EarlyView.
Breathable membranes can appear less permeable when the measurement apparatus limits vapor transport. A calibrated four‐step model describes membrane permeation and apparatus effects as resistances in series under a common chemical‐potential driving force.
Xianke Feng, Winston Wang, Hongbian Li, K. Ravi‐Chandar, Benny D. Freeman, Rui Huang, Nanshu Lu   +6 more
wiley   +1 more source