Results 91 to 100 of about 290,379 (268)

Stability and Raman analysis of 1D carbon-boron nitride van der Waals heterostructure [PDF]

E3S Web of Conferences
In this work, we investigate the one dimensional van der Waals heterostructures formed by single-walled carbon nanotubes (SWCNTs) trapped inside single-walled boron nitride nanotubes (SWBNNTs) by a combination of molecular dynamics, the bond ...
El Bouayadi O., Elhadfi S., Chenouf J., Abdelkader S. A. A., Fakrach B., Rahmouni A., Rahmani A.H.   +6 more
doaj   +1 more source

Studying carbonisation with raman spectroscopy

, 2013
Raman spectroscopy can provide fast and non-destructive analysis of carbonaceous materials. As it is able to detect nanometre-sized structural features, Raman spectroscopy is widely used in the study of carbon nanotubes, fullerenes, graphenes, and many ...
Pickering, Kim L., McDonald-Wharry, John, Ripberger, Georg, Manley-Harris, Merilyn   +3 more
core  

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

Advanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar, Fahrettin Sarcan, Elanur Hut, Emiliano R. Martins, Stuart A. Cavill, Thomas F. Krauss, Yue Wang   +6 more
wiley   +1 more source

تقييم كفاءة مادة النانوماجنتك في تنظيف الاسطح الجدارية الملونة [PDF]

مجلة کلية الآداب. جامعة أسوان
الصور الجدارية تحتاج الي اختيار طريقة واسلوب التنظيف والعلاج المناسبين وان كل صورة جدارية لها حالتها الخاصة في طريقة التعامل معها. يهدف البحث الي تقييم كفاءة مادة النانوماجنتك لتنظيف اسطح الصور الجدارية لذا استعانت الدراسة العديد من اجهزة الفحص والتحليل.
احمد محمد سلام حسن
doaj   +1 more source

Carbonisation of biomass-derived chars and the thermal reduction of a graphene oxide sample studied using Raman spectroscopy

, 2013
Chars and carbonised chars were produced from three different oxygen-rich precursors (Pinus radiata wood, Phormium tenax leaf fibres, and sucrose crystals).
Pickering, Kim L., McDonald-Wharry, John, Manley-Harris, Merilyn   +2 more
core   +1 more source

Graded‐Interface Dual‐Environment Hydrogel‐Polymer Electrolyte for Stabilized Anode and Sustained Cathode Kinetics in Aqueous Zinc‐Ion Batteries

Advanced Functional Materials, EarlyView.
A graded‐interface hydrogel‐polymer electrolyte decouples water activity to simultaneously stabilize the Zn anode and sustain cathode kinetics. The flexible design supports dendrite‐free cycling over 1600 h, high capacity in both MnO2 and V2O5 full cells, and stable pouch‐cell performance under bending, resolving the fundamental water conflict in ...
Shuyun Wang, Shengmei Chen, Xinyu Wang, Haipeng Wang, Jinsong Zhou, Ka Kiu Keith Cheung, Yiran Ying, Longtao Ma, Juan Antonio Zapien   +8 more
wiley   +1 more source

Raman Optical Activity and Raman spectroscopy of carbohydrates in solution

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2019
This comprehensive study on selected 14 carbohydrates in water solution is an extension of previously published one focused only on solid state analysis. Here, Raman spectroscopy was used as a dedicated method for analysis of carbohydrates in solution, both using a normal effect (RS) and its chiral analogue: Raman Optical Activity spectroscopy (ROA ...
Monika Dudek, Grzegorz Zajac, Ewelina Szafraniec, Ewelina Wiercigroch, Szymon Tott, Kamilla Malek, Agnieszka Kaczor, Malgorzata Baranska   +7 more
openaire   +3 more sources

HESS J1809-193: Gamma-Ray Emission by Cosmic Rays from a Past Explosion

The Astrophysical Journal
The very-high-energy γ -ray source HESS J1809-193 has been detected by the LHAASO and HAWC observatory beyond 100 TeV energy. It is an interesting candidate for exploring the underlying mechanisms of γ -ray production due to the presence of supernova ...
Sovan Boxi, Nayantara Gupta
doaj   +1 more source

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Resonance Raman and Raman Spectroscopy for Breast Cancer Detection

Technology in Cancer Research & Treatment, 2013
Raman spectroscopy is a sensitive method to detect early changes of molecular composition and structure that occur in lesions during carcinogenesis. The Raman spectra of normal, benign and cancerous breast tissues were investigated in vitro using a near-infrared (NIR) Raman system of 785 nm excitation and confocal micro resonance Raman system of 532 ...
C-H, Liu, Y, Zhou, Y, Sun, J Y, Li, L X, Zhou, S, Boydston-White, V, Masilamani, K, Zhu, Y, Pu, R R, Alfano   +9 more
openaire   +2 more sources