TOP > 外国特許検索 > Optical electric field enhancement element and probe using the same

Optical electric field enhancement element and probe using the same UPDATE

外国特許コード F110003831
整理番号 I021P002WO
掲載日 2011年7月6日
出願国 アメリカ合衆国
出願番号 73959608
公報番号 20100281587
公報番号 8601610
出願日 平成20年10月24日(2008.10.24)
公報発行日 平成22年11月4日(2010.11.4)
公報発行日 平成25年12月3日(2013.12.3)
国際出願番号 JP2008069366
国際公開番号 WO2009054507
国際出願日 平成20年10月24日(2008.10.24)
国際公開日 平成21年4月30日(2009.4.30)
優先権データ
  • 特願2007-276691 (2007.10.24) JP
  • 2008WO-JP69366 (2008.10.24) WO
発明の名称 (英語) Optical electric field enhancement element and probe using the same UPDATE
発明の概要(英語) (US8601610)
An optical electric field enhancement element includes a nanorod which includes a plurality of conductive layers formed therein in a direction parallel to a longitudinal axis of the nanorod.
Adjacent conductive layers are isolated from each other via an insulating layer.
The nanorod exhibits an effect of enhancing an optical electric field.
特許請求の範囲(英語) [claim1]
1. A probe for Raman scattering spectroscopy, the probe comprising: a probe body; and
an optical electric field enhancement element comprising a tungsten oxide nanorod which includes a plurality of conductive layers formed therein in a direction parallel to a longitudinal axis of the nanorod,
wherein the conductive layers are comprised of oxygen-deficient planes, and adjacent conductive layers are isolated from each other via an insulating layer,
wherein the composition of the nanorod is WOx, 2.5 <= x <= 3,
wherein the optical electric field enhancement element is treated through local oxidation of the tungsten oxide nanorod by laser irradiation in air,
wherein an active site of enhanced Raman spectroscopy is located at a tip of the nanorod, and
wherein the optical electric field enhancement element exhibits a Raman scattering enhancement effect of 1010 and is thereby capable of detecting single-molecule Raman scattering.
[claim2]
2. The probe of claim 1, wherein the nanorod comprises a rod-shaped tungsten oxide crystal having a diameter of 10 to 100 nm and a length of 100 nm to 30 mu m.
[claim3]
3. The probe of claim 2, wherein the nanorod has a {001} crystallographic shear structure in the crystal, and has a nano-gap structure in which the conductive layers on an atomic layer level are isolated from each other by the insulating layer.
[claim4]
4. The probe of claim 1, wherein the probe is configured to detect molecules in a thin concentration of at most 1 nM in an aqueous solution using the Raman scattering enhancement effect of the tungsten oxide nanorod.
[claim5]
5. The probe of claim 1, wherein the nanorod is configured to detect molecular vibration of single molecules in an aqueous solution using the Raman scattering enhancement effect of the tungsten oxide nanorod.
[claim6]
6. The probe of claim 1, wherein the probe is configured to reduce a local chemical reaction by exciting molecules existing in the vicinity of the tungsten oxide nanorod by light or heat through photoirradiation of the nanorod.
[claim7]
7. A probe for Raman scattering spectroscopy, the probe comprising: a probe body; and
an optical electric field enhancement element comprising a tungsten oxide nanorod which includes a plurality of conductive layers formed therein in a direction parallel to a longitudinal axis of the nanorod,
wherein the conductive layers are comprised of oxygen-deficient planes, and adjacent conductive layers are isolated from each other via an insulating layer,
wherein the composition of the nanorod is WOx, 2.5 <= x <= 3,
wherein the optical electric field enhancement element is treated through local reduction of the tungsten oxide nanorod by heating in the presence of carbon or carbon monoxide,
wherein an active site of enhanced Raman spectroscopy is located at a tip of the nanorod, and
wherein the optical electric field enhancement element exhibits a Raman scattering enhancement effect of 1010 and is thereby capable of detecting single-molecule Raman scattering.
[claim8]
8. The probe of claim 7, wherein the nanorod comprises a rod-shaped tungsten oxide crystal having a diameter of from 10 to 100 nm and a length of from 100 nm to 30 mu m.
[claim9]
9. The probe of claim 8, wherein the nanorod has a {001} crystallographic shear structure in the crystal, and has a nano-gap structure in which the conductive layers on an atomic layer level are isolated from each other by the insulating layer.
[claim10]
10. The probe of claim 7, wherein the probe is configured to detect molecules in a thin concentration of at most 1 nM in an aqueous solution using the Raman scattering enhancement effect of the tungsten oxide nanorod.
[claim11]
11. The probe of claim 7, wherein the nanorod is configured to detect molecular vibration of single molecules in an aqueous solution using the Raman scattering enhancement effect of the tungsten oxide nanorod.
[claim12]
12. The probe of claim 7, wherein the probe is configured to reduce a local chemical reaction by exciting molecules existing in the vicinity of the tungsten oxide nanorod by light or heat through photoirradiation of the nanorod.
  • 発明者/出願人(英語)
  • SHINGAYA YOSHITAKA
  • NAKAYAMA TOMONOBU
  • AONO MASAKAZU
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • NATIONAL INSTITUTE FOR MATERIALS SCIENCE
国際特許分類(IPC)
米国特許分類/主・副
  • G01N021/65D
  • S01N021/65D
ライセンスをご希望の方、特許の内容に興味を持たれた方は、問合せボタンを押してください。

PAGE TOP

close
close
close
close
close
close