scholarly journals Using a Microfluidics Device for Mechanical Stimulation and High Resolution Imaging of C. elegans

10.3791/56530 ◽  
2018 ◽  
Author(s):  
Holger Fehlauer ◽  
Adam L. Nekimken ◽  
Anna A. Kim ◽  
Beth L. Pruitt ◽  
Miriam B. Goodman ◽  
...  
Keyword(s):  
High Resolution ◽  
Mechanical Stimulation ◽  
High Resolution Imaging ◽  
C Elegans ◽  
Resolution Imaging

On-demand dielectrophoretic immobilization and high-resolution imaging of C. elegans in microfluids

2018 ◽  
Vol 259 ◽  
pp. 703-708 ◽  
Author(s):  
Liang Huang ◽  
Peng Zhao ◽  
Junhan Wu ◽  
Han-Sheng Chuang ◽  
Wenhui Wang
Keyword(s):  
High Resolution ◽  
High Resolution Imaging ◽  
C Elegans ◽  
On Demand ◽  
Resolution Imaging

scholarly journals Live-cell vibrational imaging of choline metabolites by stimulated Raman scattering coupled with isotope-based metabolic labeling

The Analyst ◽  
2014 ◽  
Vol 139 (10) ◽  
pp. 2312-2317 ◽  
Author(s):  
Fanghao Hu ◽  
Lu Wei ◽  
Chaogu Zheng ◽  
Yihui Shen ◽  
Wei Min
Keyword(s):  
High Resolution ◽  
Raman Scattering ◽  
Mammalian Cells ◽  
Stimulated Raman Scattering ◽  
Primary Neurons ◽  
High Resolution Imaging ◽  
Metabolic Labeling ◽  
C Elegans ◽  
Resolution Imaging

High-resolution imaging of choline metabolites in living mammalian cells, primary neurons andC. eleganshas been demonstrated with the potential forin vivodisease detection and developmental monitoring.

scholarly journals Hydrogel-droplet microfluidic platform for high-resolution imaging and sorting of early larval Caenorhabditis elegans

Lab on a Chip ◽  
2015 ◽  
Vol 15 (6) ◽  
pp. 1424-1431 ◽  
Author(s):  
Guillaume Aubry ◽  
Mei Zhan ◽  
Hang Lu
Keyword(s):  
Caenorhabditis Elegans ◽  
High Resolution ◽  
Microfluidic Device ◽  
High Resolution Imaging ◽  
Microfluidic Platform ◽  
C Elegans ◽  
Resolution Imaging

We present a microfluidic device for high-resolution imaging and sorting of early larval C. elegans. The animals are isolated in droplets and temporarily immobilized for imaging using a reversible hydrogel.

scholarly journals Pneumatic stimulation of C. elegans mechanoreceptor neurons in a microfluidic trap

Lab on a Chip ◽  
2017 ◽  
Vol 17 (6) ◽  
pp. 1116-1127 ◽  
Author(s):  
Adam L. Nekimken ◽  
Holger Fehlauer ◽  
Anna A. Kim ◽  
Sandra N. Manosalvas-Kjono ◽  
Purim Ladpli ◽  
...  
Keyword(s):  
Caenorhabditis Elegans ◽  
High Resolution ◽  
Neuronal Activity ◽  
High Resolution Imaging ◽  
C Elegans ◽  
Resolution Imaging ◽  
Simultaneous Immobilization ◽  
Stimulation Of

A new microfluidic tool for simultaneous immobilization, force delivery and high resolution imaging of neuronal activity in living Caenorhabditis elegans.

scholarly journals Long-Term High-Resolution Imaging of Developing C. elegans Larvae with Microfluidics

2017 ◽  
Vol 40 (2) ◽  
pp. 202-214 ◽  
Author(s):  
Wolfgang Keil ◽  
Lena M. Kutscher ◽  
Shai Shaham ◽  
Eric D. Siggia
Keyword(s):  
High Resolution ◽  
High Resolution Imaging ◽  
C Elegans ◽  
Resolution Imaging

Alternative approaches to ultra-high resolution imaging

1991 ◽  
Vol 49 ◽  
pp. 650-651
Author(s):  
J.M. Cowley
Keyword(s):  
High Resolution ◽  
High Voltage ◽  
High Resolution Electron Microscopy ◽  
Crystal Defects ◽  
High Resolution Imaging ◽  
General Applicability ◽  
Resolution Electron ◽  
Radiation Resistant ◽  
Resolution Imaging ◽  
Alternative Approaches

By extrapolation of past experience, it would seem that the future of ultra-high resolution electron microscopy rests with the advances of electron optical engineering that are improving the instrumental stability of high voltage microscopes to achieve the theoretical resolutions of 1Å or better at 1MeV or higher energies. While these high voltage instruments will undoubtedly produce valuable results on chosen specimens, their general applicability has been questioned on the basis of the excessive radiation damage effects which may significantly modify the detailed structures of crystal defects within even the most radiation resistant materials in a period of a few seconds. Other considerations such as those of cost and convenience of use add to the inducement to consider seriously the possibilities for alternative approaches to the achievement of comparable resolutions.

Principle and practice of high-resolution imaging with a field-emission TEM

1992 ◽  
Vol 50 (1) ◽  
pp. 138-139
Author(s):  
Max T. Otten ◽  
Wim M.J. Coene
Keyword(s):  
High Resolution ◽  
Field Emission ◽  
Incidence Angle ◽  
Temporal Coherence ◽  
Energy Spread ◽  
High Resolution Imaging ◽  
Major Improvement ◽  
High Resolution Images ◽  
Resolution Imaging

High-resolution imaging with a LaB6 instrument is limited by the spatial and temporal coherence, with little contrast remaining beyond the point resolution. A Field Emission Gun (FEG) reduces the incidence angle by a factor 5 to 10 and the energy spread by 2 to 3. Since the incidence angle is the dominant limitation for LaB6 the FEG provides a major improvement in contrast transfer, reducing the information limit to roughly one half of the point resolution. The strong improvement, predicted from high-resolution theory, can be seen readily in diffractograms (Fig. 1) and high-resolution images (Fig. 2). Even if the information in the image is limited deliberately to the point resolution by using an objective aperture, the improved contrast transfer close to the point resolution (Fig. 1) is already worthwhile.

Imaging of ferroelectric domain walls by electron holography

1992 ◽  
Vol 50 (1) ◽  
pp. 246-247
Author(s):  
Xiao Zhang
Keyword(s):  
Magnetic Field ◽  
High Resolution ◽  
Domain Walls ◽  
Ferroelectric Domain ◽  
Object Wave ◽  
Electron Holography ◽  
High Resolution Imaging ◽  
Quantitative Measurements ◽  
Resolution Imaging ◽  
Electron Microscopes

Electron holography has recently been available to modern electron microscopy labs with the development of field emission electron microscopes. The unique advantage of recording both amplitude and phase of the object wave makes electron holography a effective tool to study electron optical phase objects. The visibility of the phase shifts of the object wave makes it possible to directly image the distributions of an electric or a magnetic field at high resolution. This work presents preliminary results of first high resolution imaging of ferroelectric domain walls by electron holography in BaTiO3 and quantitative measurements of electrostatic field distribution across domain walls.

The method of replication affects metal film granularity and resolution

1989 ◽  
Vol 47 ◽  
pp. 708-709
Author(s):  
George C. Ruben
Keyword(s):  
Electron Beam ◽  
High Resolution ◽  
Film Thickness ◽  
Single Molecule ◽  
Metal Film ◽  
Vertical Surface ◽  
High Resolution Imaging ◽  
Controllable Factors ◽  
Resolution Imaging

Single molecule resolution in electron beam sensitive, uncoated, noncrystalline materials has been impossible except in thin Pt-C replicas ≤ 150Å) which are resistant to the electron beam destruction. Previously the granularity of metal film replicas limited their resolution to ≥ 20Å. This paper demonstrates that Pt-C film granularity and resolution are a function of the method of replication and other controllable factors. Low angle 20° rotary , 45° unidirectional and vertical 9.7±1 Å Pt-C films deposited on mica under the same conditions were compared in Fig. 1. Vertical replication had a 5A granularity (Fig. 1c), the highest resolution (table), and coated the whole surface. 45° replication had a 9Å granulartiy (Fig. 1b), a slightly poorer resolution (table) and did not coat the whole surface. 20° rotary replication was unsuitable for high resolution imaging with 20-25Å granularity (Fig. 1a) and resolution 2-3 times poorer (table). Resolution is defined here as the greatest distance for which the metal coat on two opposing faces just grow together, that is, two times the apparent film thickness on a single vertical surface.

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