絞り込み

16645

広告

新型ウイルス肺炎 北朝鮮国営航空 外国人観光客は乗せない対応

中国で新型のコロナウイルスによるものとみられる肺炎への感染が広がっている問題を受けた北朝鮮の動きです。北朝鮮国営のコリョ(高麗)航空はNHKの取材に対し、北京か...

  1. 新型ウイルス肺炎 マカオでも感染者を初確...
  2. 調達情報 中小企業のための女性活躍推進事...
  3. 調達情報 民間人材サービスの活用検討事業...
  4. 書店水槽に「ぴろぴろの何か」 絶滅危惧ド...

ニュース一覧

Vibrational Imaging and Quantification of Two-Dimensional Hexagonal Boron Nitride with Stimulated Raman Scattering.

著者 Ling J , Miao X , Sun Y , Feng Y , Zhang L , Sun Z , Ji M
ACS Nano.2019 Nov 14 ; ():.
この記事をPubMed上で見るPubMedで表示
この記事をGoogle翻訳上で見る Google翻訳で開く

スターを付ける スターを付ける     (19view , 0users)

Full Text Sources

Hexagonal boron nitride (h-BN) is an important member of two-dimensional (2D) materials with a large direct bandgap, and has attracted growing interest in ultraviolet optoelectronics and nanoelectronics. Compared with graphene and graphite, h-BN has weak Raman effect because of the far off-resonance excitation, hence it is difficult to exploit Raman spectroscopy to characterize important properties of 2D h-BN, such as thickness, doping and strain effects. Here, we applied stimulated Raman scattering (SRS) to enhance the sensitivity of E2g Raman mode of h-BN. We showed that SRS microscopy achieves rapid high resolution imaging of h-BN with a pixel dwell time four orders of magnitude smaller than conventional spontaneous Raman microscopy. Moreover, the near perfect linear dependence of signal intensity on h-BN thickness and isotropic polarization dependence allow convenient determination of flake thickness with SRS imaging. Our results indicated that SRS microscopy provides a promising tool for high-speed quantification of h-BN and holds potential for vibrational imaging of 2D materials.
PMID: 31725258 [PubMed - as supplied by publisher]
印刷用ページを開く Endnote用テキストダウンロード