Results 231 to 240 of about 20,467,142 (287)

High aspect ratio nanoparticles in nanotoxicology

Integrated Environmental Assessment and Management, 2007
In this Learned Discourse, we introduce nanotoxicology and note that little information is available on the role of aspect ratio in nanomaterial toxicity. Aspect ratio has implications for clearance from the lungs and for phagocytic cells such as the macrophage.
W Shane, Journeay, Sarabjeet S, Suri, Hicham, Fenniri, Baljit, Singh   +3 more
openaire   +2 more sources

Scalable Nanoimprint Lithography Process for Manufacturing Visible Metasurfaces Composed of High Aspect Ratio TiO2 Meta-Atoms

ACS Photonics, 2021
: We report a one-step additive manufacturing process to fabricate metalenses for visible wavelengths. Nanostruc-tures with aspect ratios larger than eight and critical dimensions smaller than 60 nm were produced using nanoimprint lithography and a ...
Vincent J. Einck, M. Torfeh, A. McClung, D. Jung, M. Mansouree, A. Arbabi, J. Watkins   +6 more
semanticscholar   +1 more source

Simulations of high‐aspect‐ratio jets

International Journal for Numerical Methods in Fluids, 2002
AbstractThere are many practical situations when jets are emanating from non‐axis‐symmetric apertures, yet numerical simulations of such three‐dimensional jets are scarce and most of them have failed to reproduce some of the unique flow features. Examples of this type of jets are gas leaks from flanges.
Holdø, A. E., Simpson, B. A. F.
openaire   +1 more source

Scalable, Divergent Synthesis of a High Aspect Ratio Carbon Nanobelt.

Journal of the American Chemical Society, 2021
Carbon nanobelts are molecules of high fundamental and technological interest due to their structural similarity to carbon nanotubes, of which they are molecular cutouts.
Harrison M. Bergman, G. Kiel, Rex C. Handford, Yi Liu, T. Tilley   +4 more
semanticscholar   +1 more source

Antibiotics separation with MXene membranes based on regularly stacked high-aspect-ratio nanosheets.

Angewandte Chemie, 2020
The uncontrolled release of antibiotics and pharmaceuticals into the environment is a worldwide increasing problem. Thus highly efficient treatment technologies for wastewater are urgently needed.
Zhong-Kun Li, Yan-Ying Wei, Xue Gao, Li Ding, Zong Lu, Jun-Jie Deng, Xian-Feng Yang, J. Caro, Hai-Hui Wang   +8 more
semanticscholar   +1 more source

High-aspect-ratio bulk micromachining of titanium

Nature Materials, 2004
Recent process developments have permitted the highly anisotropic bulk micromachining of titanium microelectromechanical systems (MEMS). By using the metal anisotropic reactive ion etching with oxidation (MARIO) process, arbitrarily high-aspect-ratio structures with straight sidewalls and micrometre-scale features have been bulk micromachined into ...
Marco F, Aimi, Masa P, Rao, Noel C, MacDonald, Abu Samah, Zuruzi, David P, Bothman   +4 more
openaire   +2 more sources

High aspect-ratio holographic photoresist gratings

Applied Optics, 1988
Holographic gratings with periods as small as 700 nm, rectangular profiles with linewidths of
S H, Zaidi, S R, Brueck
openaire   +2 more sources

A high aspect-ratio holey metalens

Conference on Lasers and Electro-Optics, 2021
We design and fabricate metalenses comprising substrateless ultra-deep via-holes in silicon with aspect ratios exceeding 30:1. Deep holes allow us to circumvent fabrication and fragility constraints which limit the aspect ratios of free-standing meta-atoms.
Soon Wei Daniel Lim, Maryna Leonidivna Meretska, Federico Capasso   +2 more
openaire   +1 more source

LLaVA-UHD: an LMM Perceiving Any Aspect Ratio and High-Resolution Images

European Conference on Computer Vision
Visual encoding constitutes the basis of large multimodal models (LMMs) in understanding the visual world. Conventional LMMs process images in fixed sizes and limited resolutions, while recent explorations in this direction are limited in adaptivity ...
Ruyi Xu, Yuan Yao, Zong-Hao Guo, Jun-Bo Cui, Zan-Lin Ni, Chunjiang Ge, Tat-Seng Chua, Zhi-Yuan Liu, Maosong Sun, Gao Huang   +9 more
semanticscholar   +1 more source

High Aspect Ratio Processing

2017
The development of silicon microcomponents and microsystems, being an outgrowth of the processing techniques commonly used for the fabrication of integrated circuits, was constrained to mostly planar dimensions. This was because optical lithography and most photoresists were developed for this specific purpose.
Friedrich, C. R., Warrington, R., Bacher, W., Bauer, W., Coane, P. J., Göttert, J., Hanemann, T., Hausselt, J., Heckele, M., Knitter, R., Mohr, J., Piotter, V., Ritzhaupt-Kleissl, H. J., Ruprecht, R.   +13 more
openaire   +1 more source