DEEP UV LITHOGRAPHY FOR PILLAR TYPE NANOPHOTONIC CRYSTAL

2005 ◽  
Vol 04 (04) ◽  
pp. 559-566 ◽  
Author(s):  
SELIN H. G. TEO ◽  
A. Q. LIU ◽  
G. L. SIA ◽  
C. LU ◽  
J. SINGH ◽  
...  

The progress made to resolve challenges met in using deep UV lithography for batch fabrication of pillar type nano-photonic crystals is described, using data from experiments carried out based on two degrees, full factorial design of experiments and subsequently processed using variance analysis. A binary mask without phase shift features was used to obtain information on effects of lithographic parameters such as antireflection coatings, resist preparation recipes, exposure latitude and depth of focus biases. The results derived hence enabled successful derivations of high quality arrays of dense nano-pillars.

1993 ◽  
Author(s):  
William N. Partlo ◽  
Paul J. Tompkins ◽  
Paul G. Dewa ◽  
Paul F. Michaloski

2021 ◽  
Vol 3 (8) ◽  
pp. 2236-2244
Author(s):  
Matthias Keil ◽  
Alexandre Emmanuel Wetzel ◽  
Kaiyu Wu ◽  
Elena Khomtchenko ◽  
Jitka Urbankova ◽  
...  

A novel super resolution deep UV lithography method is employed to fabricate large area plasmonic metasurfaces.


Author(s):  
Sean S. Tolman ◽  
Amanda Beatty ◽  
Anton E. Bowden ◽  
Larry L. Howell

The parameters of an innovative padding concept were investigated using Finite Element Analyses (FEA) and physical testing. The concept relies on a compliant corrugation embedded in an elastic foam to provide stiffness for force distribution and elastic deformation for energy absorption. The shape of the corrugation cross section was explored as well as the wavelength and amplitude by employing a full factorial design of experiments. FEA results were used to choose designs for prototyping and physical testing. The results of the physical tests were consistent with the FEA predictions although the FEA tended to underestimate the peak pressure compared to the physical tests. A performance metric is proposed to compare different padding configurations. The concept shows promise for sports padding applications. It may allow for designs which are smaller, more lightweight, and move better with an athlete than current technologies yet still provide the necessary protective functions.


Author(s):  
Steven Micucci ◽  
Gerard Chang ◽  
Eric Smith ◽  
Charles Cassidy ◽  
Amrit Sagar ◽  
...  

Thermal necrosis of bone occurs at sustained temperatures above approximately 47°C. During joint replacement surgery, resection of bone by sawing can heat the bone above this necrotic threshold, thereby inducing cellular damage and negatively affecting surgical outcomes. The aim of this research was to investigate the effect of saw blade speed and applied thrust force on the heating of bone. A sagittal sawing fixture was used to make cuts in cortical bovine bone, while thermocouples were used to characterize the temperature profile from the cut surface. A full factorial Design of Experiments was performed to determine the relative effects of blade speed and applied thrust force on temperature. When comparing the effect of speed to force in the regression analysis, the effect of force on temperature (p < 0.001) was 2.5 times more significant than speed (p = 0.005). The interaction of speed and force was not statistically significant (p > 0.05). The results of this research can be used in the development of training simulators, where virtual surgeries with haptic feedback can be accompanied by the related temperatures in proximity to the cut. From a clinical perspective, the results indicate that aggressive cutting at higher blade speed and greater thrust force results in lower temperatures in the surrounding bone.


2009 ◽  
Vol 95 (5) ◽  
pp. 054101 ◽  
Author(s):  
S. Nikishin ◽  
B. Borisov ◽  
M. Pandikunta ◽  
R. Dahal ◽  
J. Y. Lin ◽  
...  

1993 ◽  
Author(s):  
Bruce W. Smith ◽  
Malcolm C. Gower ◽  
Mark Westcott ◽  
Lynn F. Fuller

Author(s):  
Mary Barkworth ◽  
Mushtaq Ahmad ◽  
Mudassir Asrar ◽  
Raza Bhatti ◽  
Neil Cobb ◽  
...  

In 2017, funding from the Biodiversity Information Fund for Asia accelerated data mobilization and georeferencing by Pakistani herbaria. The funding directly benefited only two herbaria but, by the end of the project 9 herbaria were involved in sharing data, 2 through GBIF (ISL 2019, SINDH 2019; codes according to Index herbariorum) and 6 others (BANNU 2019, BGH 2019, PUP 2019, QUETTA 2019, RAW 2019, SWAT 2019) through OpenHerbarium, a Symbiota based network. Eventually, all collections in OpenHerbarium are expected to become GBIF data providers. Additional Pakistani herbaria are being introduced to data mobilization and several individuals have expressed interest in learning to use OpenHerbarium to generated documented checklists for teaching and research and others for learning to link information in OpenHerbarium to other resources. These are the first steps to developing a “a large group of individuals … to train, mentor, and champion [biodiversity] data use” in Pakistan, but it is important to remember that good bioidiversity data starts in the field. We need to provide today’s collectors and educators with easy access to a) information about what constitutes a high-quality herbarium specimen; b) tools for making it easier to record and provide high quality specimen data; c) simple mechanisms for sharing data in ways that provide immediately useful resources; and d) learning to make use of the data becoming available. OpenHerbarium addresses the third and fourth needs and also makes it simple for collections to become GBIF data providers. This year, the focus will be on first two of the three steps identified. Introduction of the new resources will be used to introduce collectors and educators to the ideas underlying provision of biodiversity data that is fit for use and reuse. When Symbiota2 is functional, OpenHerbarium will be moved to that system. This will encourage development of additional tools for using biodiversity data. All these activities are essential to helping spread understanding of the concepts integral to biodiversity informatics. It is, of course, possible “to train, build, and champion data use” using data for other parts of the world, or provided by institutions from other parts of the world, but embedding good biodiversity data practices into the fabric of a country’s biodiversity education and research activities better benefits the country if a substantial portion of the data is generated from within the country. It also helps to spread knowledge of the country’s biodiversity among its students. Consequently, our focus in developing Pakistan’s capacity in biodiversity informatics is on engaging collections and collectors in sharing biodiversity data, then helping them discover, use, and create methods for developing the insights needed to encourage wise use of the country’s biological resources, and encouraging interaction. This will lead to a “community of practice” within Pakistan that can both benefit from and contribute to an international “community of practice”.


2020 ◽  
Author(s):  
David Gonzalez-Andrade ◽  
Diego Pérez Galacho ◽  
Miguel Montesinos Ballester ◽  
Xavier LE ROUX ◽  
Eric Cassan ◽  
...  

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