Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Surface-enhanced Raman spectroscopy substrate and preparation method thereof
The invention discloses a surface-enhanced Raman spectroscopy substrate and a preparation method thereof. The surface-enhanced Raman spectroscopy substrate comprises a conducting substrate, a two-dimensional noble metal micro-nano structure array and gold nanostars, wherein each array unit is a starlike noble metal film unit; the size of each starlike noble metal film unit is 150-1000 nm; the distance between every two adjacent starlike noble metal film units is 10-500 nm; the gold nanostars are deposited at tips of all the starlike noble metal film units in the two-dimensional noble metal micro-nano structure array through electrophoresis; the deposition position of each gold nanostar is 1-5 nm away from the tips of the corresponding starlike noble metal film unit. On one hand, the own electric fields of gold nanostar particles are enhanced; on the other hand, the tips of all the starlike noble metal film units in the two-dimensional noble metal micro-nano structure array are further coupled with those of the gold nanostar particles. Therefore, the electric field strength in a nearby area is greatly improved, and the high-sensitivity surface-enhanced Raman spectroscopy substrate is obtained.
Surface-enhanced Raman spectroscopy substrate and preparation method thereof
The invention discloses a surface-enhanced Raman spectroscopy substrate and a preparation method thereof. The surface-enhanced Raman spectroscopy substrate comprises a conducting substrate, a two-dimensional noble metal micro-nano structure array and gold nanostars, wherein each array unit is a starlike noble metal film unit; the size of each starlike noble metal film unit is 150-1000 nm; the distance between every two adjacent starlike noble metal film units is 10-500 nm; the gold nanostars are deposited at tips of all the starlike noble metal film units in the two-dimensional noble metal micro-nano structure array through electrophoresis; the deposition position of each gold nanostar is 1-5 nm away from the tips of the corresponding starlike noble metal film unit. On one hand, the own electric fields of gold nanostar particles are enhanced; on the other hand, the tips of all the starlike noble metal film units in the two-dimensional noble metal micro-nano structure array are further coupled with those of the gold nanostar particles. Therefore, the electric field strength in a nearby area is greatly improved, and the high-sensitivity surface-enhanced Raman spectroscopy substrate is obtained.
Surface-enhanced Raman spectroscopy substrate and preparation method thereof
ZHU SHENGQING (Autor:in) / ZHOU JIAN (Autor:in) / YANG RUNMIAO (Autor:in) / ZHOU SHILONG (Autor:in)
22.07.2015
Patent
Elektronische Ressource
Englisch
IPC:
G01N
Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften
,
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
/
C03C
Chemische Zusammensetzungen für Gläser, Glasuren oder Emails
,
CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
/
C04B
Kalk
,
LIME
/
C25D
Verfahren für die elektrolytische oder elektrophoretische Herstellung von Überzügen
,
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS
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