Results 101 to 110 of about 91,150 (261)

3D Printed Photon Shield Assembly for Low‐Noise Visual Stimulation During Two‐Photon Imaging in Mice

Advanced Materials Technologies, EarlyView.
We present the Photon Shield, an open‐hardware system for low‐noise two‐photon calcium imaging during visual stimulation in mice. Combining a 3D‐printed headplate and rail‐mounted shield substantially reduces stray‐light contamination, as quantitatively verified. Functional validation confirms reliable cortical responses. Open design files enable broad
Gergely Katona, Andrea Slézia, András Dávid, Ábel Petik, Dániel Hillier, István Ulbert, Attila Kaszás   +6 more
wiley   +1 more source

Unlocking Terahertz Steganography: Authentication of Hidden Images in Flexible Media

Advanced Materials Technologies, EarlyView.
Hidden information in multilayered devices, such as steganographic portraits, is detected and authenticated using reflection‐mode terahertz time‐domain imaging. Image reconstruction relies on a dedicated figure‐of‐merit obtained by integrating the signal intensity over the time‐window associated with the reflection from the metallic mirror backing the ...
Tiziana Ritacco, Francesca Vittorioso, Dimitrios C. Zografopoulos, Romeo Beccherelli, Walter Fuscaldo   +4 more
wiley   +1 more source

A multi-analytical study on the photochemical degradation of synthetic organic pigments

, 2015
This paper summarizes the results of a photochemical ageing study on selected synthetic organic pigments used in paint formulations both as artists' and industrial materials. Some of them are rated by the American Society for Testing and Materials (ASTM)
Schilling, M., Khanjian, H., Ghelardi, E., DEGANO, ILARIA, COLOMBINI, MARIA PERLA, Learner, T., Mazurek, J.   +6 more
core   +1 more source

An AI‐Enabled All‐In‐One Visual, Proximity, and Tactile Perception Multimodal Sensor

Advanced Robotics Research, EarlyView.
Targeting integrated multimodal perception of robots, an AI‐enabled all‐in‐one multimodal sensor is proposed. This sensor is capable of perceiving three types of modalities, including vision, proximity, and tactility. By toggling an ultraviolet light and adjusting the camera focus, it switches smoothly between multiple perceptual modalities, enabling ...
Menghao Pu, Tiyong Zhao, Lingxi Zhang, Chaoqun Han, Zhiping Chai, Yifan Zhou, Han Ding, Zhigang Wu   +7 more
wiley   +1 more source

Spectroscopic approaches for structural analysis of extracted chitosan generated from chitin deacetylated for escalated periods

BMC Chemistry
A conventional chemical method was applied for the extraction of chitosan (CH) from shrimp shell wastes (SSWs) in three stages: (1) Demineralization: SSWs were treated with HCl to remove minerals. (2) Deproteinization: NaOH was used to eliminate proteins
S. N. Ghanem, M. I. Marzouk, M. E. Tawfik, S. B. Eskander   +3 more
doaj   +1 more source

Digital image-based method to identify historical pigments in wall paintings

In this paper, a new analytical approach based on smartphone digital-images analysis coupled to chemometrics is proposed to investigate the nature of different pigments of historical and cultural interest.
Luque Cobija, María Josefa, Gallello, Gianni, Antela, Kevin U., Morales Rubio, Ángel Enrique, Sáez Hernández, Roberto, Cervera Sanz, Maria Luisa, Pérez Torralba, Iván, Mauri-Aucejo, Adela R.   +7 more
core   +1 more source

Optical and colorimetric characterization on binary mixtures prepared with coloured and white historical pigments

, 2018
The main goal of the paper is the optical and colorimetric characterization of the pigment mixtures realized with pure pigments of the principal artist's hues and white pigments through spectrophotometric analysis.
S. Gallo, Salvatore Gallo, S. Pasquale, Stefania Pasquale, Anna Maria Gueli, A. M. Gueli   +5 more
core   +1 more source

Synthesis of CoAl2O4 by double decomposition reaction between LiAlO2 and molten KCoCl3 [PDF]

, 2008
Submicronic CoAl2O4 powders were prepared by double decomposition reaction between solid LiAlO2 and molten KCoCl3 at 500 ◦C for 24 h. The reaction mechanism involves the dissolution of LiAlO2 shifted by the precipitation of CoAl2O4 until complete ...
Durand, B., Er-Rakho, Lahcen, Moussa, Redouane, Guillemet, Sophie, Samdi, A., Ouahdi, N., Er Rakho, L., El Ouatib, R., Durand, Bernard, Samdi, Azzeddine, Ouatib, Rachida El, Moussa, R., Guillemet, S., Ouahdi, Noura   +13 more
core   +1 more source

TacScope: A Miniaturized Vision‐Based Tactile Sensor for Surgical Applications

Advanced Robotics Research, EarlyView.
TacScope is a compact, vision‐based tactile sensor designed for robot‐assisted surgery. By leveraging a curved elastomer surface with pressure‐sensitive particle redistribution, it captures high‐resolution 3D tactile feedback. TacScope enables accurate tumor detection and shape classification beneath soft tissue phantoms, offering a scalable, low‐cost ...
Md Rakibul Islam Prince, Sheeraz Athar, Pokuang Zhou, Yu She   +3 more
wiley   +1 more source

Presentation of organic pigments and their Raman microscopic examination through the example of indigo

, 2023
In the theoretical part of the thesis work the processes used to create organic pigments, and the plant and animal components used to make dyes were described and categorized according to their chemical structure.
Makan, Shynar
core