Wide-Field Optical Imaging of Surface Nanostructures

Nano Letters ◽  
2006 ◽  
Vol 6 (7) ◽  
pp. 1384-1388 ◽  
Author(s):  
Dominique Ausserré ◽  
Marie-Pierre Valignat
Keyword(s):  
Optical Imaging ◽  
Wide Field ◽  
Surface Nanostructures

scholarly journals A Large Lateral Craniotomy Procedure for Mesoscale Wide-field Optical Imaging of Brain Activity

10.3791/52642 ◽  
2017 ◽  
Author(s):  
Michael Kyweriga ◽  
Jianjun Sun ◽  
Sunny Wang ◽  
Richard Kline ◽  
Majid H. Mohajerani
Keyword(s):  
Optical Imaging ◽  
Brain Activity ◽  
Wide Field

Optical design of common-aperture multispectral and polarization optical imaging system with wide field of view

2019 ◽  
Vol 28 (8) ◽  
pp. 084201
Author(s):  
Xin Liu ◽  
Jun Chang ◽  
Shuai Feng ◽  
Yu Mu ◽  
Xia Wang ◽  
...  
Keyword(s):  
Optical Imaging ◽  
Imaging System ◽  
Optical Design ◽  
Field Of View ◽  
Wide Field ◽  
Wide Field Of View ◽  
Optical Imaging System

scholarly journals Brown Dwarfs in the Alpha Persei Cluster

2003 ◽  
Vol 211 ◽  
pp. 163-170 ◽  
Author(s):  
John R. Stauffer ◽  
David Barrado y Navascués ◽  
Jerome Bouvier ◽  
Nicholas Lodieu ◽  
Mark McCaughrean
Keyword(s):  
Optical Imaging ◽  
Main Sequence ◽  
Brown Dwarfs ◽  
Wide Field ◽  
Minimum Mass ◽  
Infrared Photometry ◽  
Candidate List ◽  
Low Mass ◽  
Alpha Persei ◽  
The Imf

We have obtained a new, deep, wide-field optical imaging survey of the young Alpha Persei cluster which reveals a well-populated lower main sequence extending into the substellar mass regime. Subsequent infrared photometry confirms that most of the candidate brown dwarfs are indeed likely to be cluster members, with a predicted minimum mass of order 0.035 solar masses. We have combined the new candidate list with previous member catalogs to derive an IMF for Alpha Per; the slope of the IMF at the low mass end is α ~ 0.66. The Alpha Per IMF slope is thus very similar to that found in the Pleiades.

scholarly journals Wide-field three-dimensional optical imaging using temporal focusing for holographically trapped microparticles

2015 ◽  
Vol 40 (21) ◽  
pp. 4847 ◽  
Author(s):  
Roman Spesyvtsev ◽  
Helen A. Rendall ◽  
Kishan Dholakia
Keyword(s):  
Optical Imaging ◽  
Three Dimensional ◽  
Wide Field ◽  
Temporal Focusing

scholarly journals Optical Imaging-Based Guidance of Viral Microinjections and Insertion of a Laminar Electrophysiology Probe Into a Predetermined Barrel in Mouse Area S1BF

2021 ◽  
Vol 15 ◽  
Author(s):  
Victor M. Mocanu ◽  
Amir Shmuel
Keyword(s):  
Cerebral Cortex ◽  
Optical Imaging ◽  
Viral Vectors ◽  
Electrophysiological Recording ◽  
Wide Field ◽  
Functional Modules ◽  
Insertion Depth ◽  
Intrinsic Signals ◽  
Spatial Specificity ◽  
The Brain

Wide-field Optical Imaging of Intrinsic Signals (OI-IS; Grinvald et al., 1986) is a method for imaging functional brain hemodynamic responses, mainly used to image activity from the surface of the cerebral cortex. It localizes small functional modules – such as cortical columns – with great spatial resolution and spatial specificity relative to the site of increases in neuronal activity. OI-IS is capable of imaging responses either through an intact or thinned skull or following a craniotomy. Therefore, it is minimally invasive, which makes it ideal for survival experiments. Here we describe OI-IS-based methods for guiding microinjections of optogenetics viral vectors in proximity to small functional modules (S1 barrels) of the cerebral cortex and for guiding the insertion of electrodes for electrophysiological recording into such modules. We validate our proposed methods by tissue processing of the cerebral barrel field area, revealing the track of the electrode in a predetermined barrel. In addition, we demonstrate the use of optical imaging to visualize the spatial extent of the optogenetics photostimulation, making it possible to estimate one of the two variables that conjointly determine which region of the brain is stimulated. Lastly, we demonstrate the use of OI-IS at high-magnification for imaging the upper recording contacts of a laminar probe, making it possible to estimate the insertion depth of all contacts relative to the surface of the cortex. These methods support the precise positioning of microinjections and recording electrodes, thus overcoming the variability in the spatial position of fine-scale functional modules.

scholarly journals Comparison of multispectral wide-field optical imaging modalities to maximize image contrast for objective discrimination of oral neoplasia

2010 ◽  
Vol 15 (6) ◽  
pp. 066017 ◽  
Author(s):  
Darren Roblyer ◽  
Cristina Kurachi ◽  
Vanda Stepanek ◽  
Richard A. Schwarz ◽  
Michelle D. Williams ◽  
...  
Keyword(s):  
Optical Imaging ◽  
Image Contrast ◽  
Imaging Modalities ◽  
Wide Field ◽  
Oral Neoplasia
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