Results 51 to 60 of about 32,600 (191)

Dynamic holographic interferometry using a Bi12SiO20 photorefractive crystal and monomode optical fibres [PDF]

open access: yes, 1993
Dynamic holographic interferometry using polarization preserving opticai fibres as light guides and incorporating a photorefractive Bi12SiO20 (BSO) crystal as the recording medium is described.
Hobson, PR, Potter, J, Spooncer, RC
core  

Holography and the C-Theorem [PDF]

open access: yes, 2000
We review the geometric definition of C-function in the context of field theories that admit a holographic gravity dual.Comment: Contribution to the proceedings of the TMR 2000 Paris ...
Alvarez, E., Gomez, C.
core   +2 more sources

Cell image reconstruction using digital holography with an improved GS algorithm

open access: yesFrontiers in Physiology, 2022
Digital holography is an effective technology in image reconstruction as amplitude and phase information of cells can be acquired without any staining. In this paper, we propose a holographic technique with an improved Gerchberg-Saxton (GS) algorithm to ...
Yuhao Jiang   +11 more
doaj   +1 more source

Measurement of cell volume using in-line digital holography

open access: yesMicroscopy, 2020
Abstract The measurement of the volume of blood cells is important for clinical diagnosis and patient management. While digital holography microscopy has been used to obtain such information, previous off-axis setups usually involve a separated reference beam and are thus not very easy to implement.
Hangjian Ling   +4 more
openaire   +2 more sources

Imaging Gold Nanoparticles in Living Cells Environments using Heterodyne Digital Holographic Microscopy

open access: yes, 2009
This paper describes an imaging microscopic technique based on heterodyne digital holography where subwavelength-sized gold colloids can be imaged in cell environment.
Absil   +34 more
core   +1 more source

Temperature dependence of the imaging properties of holographic lenses

open access: yesJPhys Photonics
The demand for advanced photonic technologies to enhance augmented reality (AR) devices has led to a significant interest in new optical materials suitable for operation in sometimes challenging environmental conditions, such as elevated temperatures ...
Tomás Lloret   +4 more
doaj   +1 more source

Early cell death detection with digital holographic microscopy.

open access: yesPLoS ONE, 2012
BackgroundDigital holography provides a non-invasive measurement of the quantitative phase shifts induced by cells in culture, which can be related to cell volume changes.
Nicolas Pavillon   +6 more
doaj   +1 more source

Complexity of warped conformal field theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Warped conformal field theories in two dimensions are exotic nonlocal, Lorentz violating field theories characterized by Virasoro–Kac–Moody symmetries and have attracted a lot of attention as candidate boundary duals to warped AdS $$_3$$ 3 spacetimes ...
Arpan Bhattacharyya   +2 more
doaj   +1 more source

On Holography and Cosmology [PDF]

open access: yes, 1999
We consider a recent generalisation by Bousso of an earlier holography proposal by Fischler and Susskind. We demonstrate that in general inhomogeneous universes such a proposal would involve extremely complicated - possibly fractal - light sheets ...
Ellis   +6 more
core   +2 more sources

Digital holography - an innovative technology for analysis of living cells

open access: yesBioingeniøren, 2010
Background: Digital holography is a novel technique which has been used for about five years to study living cells. The technique is an innovative, non-destructive method with possibilities to study living cells over time.
Zahra El-Schish   +3 more
doaj  

Home - About - Disclaimer - Privacy