Interacting stochastic topology and Mott transition from light response

Philipp W. Klein; Adolfo G. Grushin; Karyn Le Hur

doi:10.1103/physrevb.103.035114

XRF and PIXE Analysis of light and Dark Adapted Ocular Tissue

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100053619 ◽

1982 ◽

Vol 40 ◽

pp. 190-191

Author(s):

B. J. Panessa ◽

H. W. Kraner ◽

J. B. Warren ◽

K. W. Jones

Keyword(s):

Trace Metals ◽

Pigment Epithelium ◽

Nerve Impulse ◽

Light Response ◽

Ocular Tissue ◽

Emission Spectrometry ◽

Retinol Dehydrogenase ◽

Pixe Analysis ◽

X Ray ◽

Optimal Function

During photoexcitation the retina requires specific electrolytes and trace metals for optimal function (Na, Mg, Cl, K, Ca, S, P, Cu and Zn). According to Hagins (1981), photoexcitation and generation of a nerve impulse involves the movement of Ca from the rhodopsin-ladened membranes of the rod outer segment (ROS) to the plasmalemma, which in turn decreases the in-flow of Na into the photoreceptor, resulting in hyperpolarization. In toad isolated retinas, the presence of Ba has been found to increase the amplitude and prolong the delay of the light response (Brown and Flaming, 1978). Trace metals such as Cu, Zn and Se are essential for the activity of the metalloenzymes of the retina and retina pigment epithelium (RPE) (i.e. carbonic anhydrase, retinol dehydrogenase, tyrosinase, glutathione peroxidase, superoxide dismutase...). Therefore the content and fluctuations of these elements in the retina and choroid are of fundamental importance for the maintenance of vision. This paper presents elemental data from light and dark adapted frog ocular tissues examined by electron beam induced x-ray microanalysis, x-ray fluorescence spectrometry (XRF) and proton induced x-ray emission spectrometry (PIXE).

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The pupillary light response reflects encoding, but not maintenance, in visual working memory.

Journal of Experimental Psychology Human Perception & Performance ◽

10.1037/xhp0000252 ◽

2016 ◽

Vol 42 (11) ◽

pp. 1716-1723 ◽

Cited By ~ 9

Author(s):

Tessel Blom ◽

Sebastiaan Mathôt ◽

Christian N. L. Olivers ◽

Stefan Van der Stigchel

Keyword(s):

Working Memory ◽

Visual Working Memory ◽

Light Response ◽

Pupillary Light

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Investigation of Some Characterizations of Black TiO\(_2\) Nanotubes Via Spectroscopic Methods

Communications in Physics ◽

10.15625/0868-3166/29/2/13762 ◽

2019 ◽

Vol 29 (2) ◽

pp. 189 ◽

Cited By ~ 1

Author(s):

Tho Truong Nguyen ◽

Thi Minh Cao ◽

Hieu Van Le ◽

Viet Van Pham

Keyword(s):

Water Splitting ◽

Oxygen Vacancies ◽

Light Response ◽

Nanotube Arrays ◽

Spectroscopic Methods ◽

Visible Light Response ◽

Uv Visible ◽

Visible Reflectance ◽

Splitting Effect ◽

Anodization Method

The black TiO\(_2\) with substantial Ti\(^3+\) and oxygen vacancies exhibit an excellent photoelectrochemical water-splitting performance due to the improved charge transport the extended visible light response. In this study, black TiO\(_2\) nanotube arrays synthesized by the anodization method, and then, they have been investigated some characterizations by spectroscopic methods such as UV-visible reflectance (UV-vis DRS), Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, and photoluminescence spectrum. The results showed that some highlighted properties of the black TiO2 nanotube arrays and they could apply for water-splitting effect.

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