Results 41 to 50 of about 21,191 (233)

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Comparação entre sessão única e a utilização do "curativo de demora" no tratamento endodôntico em cães: aspectos histopatológicos e microbiológicos Comparison of the application of temporary endodontic dressing in teeth of dogs: histopathological and microbiological aspects

Pesquisa Veterinária Brasileira, 2007
No tratamento endodôntico a presença de bactérias é a maior preocupação. A presença de bactérias nos túbulos dentinários, foraminas apicais e no delta apical é considerado como falha de procedimento.
Léslie M. Domingues-Falqueiro, Marco Antonio Gioso   +1 more
doaj   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Assessment of Root Morphology and Apices of First and Second Maxillary Molars in Tehran Population [PDF]

Journal of Dental Materials and Techniques, 2015
Introduction: Objective: This study aimed to assess the possible variations in root canal anatomy and topography of the apices of first and second maxillary molars.
Mandana Naseri, Zohreh Ahangari, Farnoud Sharifi, Zahra Sahebnasagh   +3 more
doaj  

Embedded Ferroelectric Nanoclusters Can Drive Polarization Reversal in a Non‐Ferroelectric Polar Film via the Proximity Effect

Advanced Functional Materials, EarlyView.
Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska, Eugene A. Eliseev, Sergei V. Kalinin, Long‐Qing Chen, Dean R. Evans, Venkatraman Gopalan   +5 more
wiley   +1 more source

Nanoscale Spatial Tuning of Superconductivity in Cuprate Thin Films via Direct Laser Writing

Advanced Functional Materials, EarlyView.
Maskless direct laser writing enables local control of oxygen stoichiometry in epitaxial YBCO thin films under ambient conditions. Sub‐micrometer grayscale patterns with tunable optical response and superconducting transport properties are achieved.
Irene Biancardi, Valerio Levati, Jordi Alcalà, Thomas Günkel, Nicolas Lejeune, Riccardo Girelli, Alejandro V. Silhanek, Valeria Russo, Narcís Mestres, Daniela Petti, Anna Palau, Edoardo Albisetti   +11 more
wiley   +1 more source

Laser technology in endodontic treatment of chronic apical periodontitis: comparative evaluation of antibacterial efficiency

Эндодонтия Today, 2020
In a modern endodontics the disinfection of infected root canals still remains a challenging problem, because mechanical removal of organic remnants and microorganisms from lateral canals and ramifications of the apical delta is impossible.

doaj  

Cell-Type-Specific Gene Expression in Developing Mouse Neocortex: Intermediate Progenitors Implicated in Axon Development

Frontiers in Molecular Neuroscience, 2021
Cerebral cortex projection neurons (PNs) are generated from intermediate progenitors (IPs), which are in turn derived from radial glial progenitors (RGPs).
Francesco Bedogni, Robert F. Hevner
doaj   +1 more source

Nanofiber‐Supported Decellularized Matrix Membrane Creates a Biomimetic Biochemical and Biophysical Niche for Intestinal Organoid Epithelium

Advanced Healthcare Materials, EarlyView.
A nanofiber‐supported decellularized extracellular matrix (NaDE) membrane recreates key biochemical and mechanical features of native intestinal tissue. This platform enables the formation of a more physiologically relevant intestinal epithelium, enhancing stem cell maintenance and promoting diverse cell differentiation.
Jaeseung Youn, Hyeonji Kim, Nam Than, Juhyeok Kim, Jangwon Yoon, Dohui Kim, Hyun Jung Kim, Dong Sung Kim   +7 more
wiley   +1 more source

Image quality for visualization of cracks and fine endodontic structures using 10 CBCT devices with various scanning protocols and artefact conditions

Scientific Reports, 2023
The aim of this study was to evaluate CBCT exposure protocols and CBCT devices in terms of image quality for the detection of cracks and fine endodontic structures using 3 conditions of metallic artifacts. An anthropomorphic phantom containing teeth with
Jáder Camilo Pinto, Karla de Faria Vasconcelos, André Ferreira Leite, Victor Aquino Wanderley, Ruben Pauwels, Matheus L. Oliveira, Reinhilde Jacobs, Mario Tanomaru-Filho   +7 more
doaj   +1 more source