Gold nanorods 3D-supercrystals as surface enhanced Raman scattering spectroscopy substrates for the rapid detection of scrambled prions.

نویسندگان

  • Ramón A Alvarez-Puebla
  • Ashish Agarwal
  • Pramit Manna
  • Bishnu P Khanal
  • Paula Aldeanueva-Potel
  • Enrique Carbó-Argibay
  • Nicolas Pazos-Pérez
  • Leonid Vigderman
  • Eugene R Zubarev
  • Nicholas A Kotov
  • Luis M Liz-Marzán
چکیده

Highly organized supercrystals of Au nanorods with plasmonic antennae enhancement of electrical field have made possible fast direct detection of prions in complex biological media such as serum and blood. The nearly perfect three-dimensional organization of nanorods render these systems excellent surface enhanced Raman scattering spectroscopy substrates with uniform electric field enhancement, leading to reproducibly high enhancement factor in the desirable spectral range.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Surface Enhanced Raman Scattering of Crystal Violet with Low Concentrations Using Self-Assembled Silver and Gold-Silver Core-Shell Nanoparticles

The active substrates in surface enhanced Raman scattering (SERS) spectroscopy were prepared through self-assembly of nanoparticles on functionalized glasses. Colloidal silver nanoparticles (Ag NPs) were prepared chemically in two different sizes by reduction of AgNO3 using trisodium citrate and sodium borohydride. Gold–silver core–shell nanoparticles were also prepared to compare between the o...

متن کامل

Attomole Detection of Glyphosate by Surface- Enhanced Raman Spectroscopy Using Gold Nanorods

Surface-enhanced Raman spectroscopy (SERS) was used for the detection of glyphosate using gold nanorods derivatized with 4mercapto phenylboronic acid. Since the introduction of the SERS, nanomaterials have been of significant interest as SERS substrates due to their tunable optical properties. The design and fabrication of a variety of nanomaterials with large SERS enhancement factor have been ...

متن کامل

In situ controlled sputtering deposition of gold nanoparticles on MnO2 nanorods as surface-enhanced Raman scattering substrates for molecular detection.

Single-crystal tetragonal α-MnO2 nanorods with different amounts of gold nanoparticles (NPs) attached were successfully prepared by a facile sputtering deposition technique. Initially, the morphology and crystal structure of the bare α-MnO2 nanorods synthesized via a hydrothermal approach were investigated. Then, the amount of gold NPs at different sputtering times was analyzed. It was confirme...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Proceedings of the National Academy of Sciences of the United States of America

دوره 108 20  شماره 

صفحات  -

تاریخ انتشار 2011