Review and outlook: from single nanoparticles to self-assembled monolayers and granular GMR sensors

نویسندگان

  • Alexander Weddemann
  • Inga Ennen
  • Anna Regtmeier
  • Camelia Albon
  • Annalena Wolff
  • Katrin Eckstädt
  • Nadine Mill
  • Michael K-H Peter
  • Jochen Mattay
  • Carolin Plattner
  • Norbert Sewald
  • Andreas Hütten
چکیده

This paper highlights recent advances in synthesis, self-assembly and sensing applications of monodisperse magnetic Co and Co-alloyed nanoparticles. A brief introduction to solution phase synthesis techniques as well as the magnetic properties and aspects of the self-assembly process of nanoparticles will be given with the emphasis placed on selected applications, before recent developments of particles in sensor devices are outlined. Here, the paper focuses on the fabrication of granular magnetoresistive sensors by the employment of particles themselves as sensing layers. The role of interparticle interactions is discussed.

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

Mechanical properties of self-assembled nanoparticle membranes: stretching and bending.

Monolayers composed of colloidal nanoparticles, with a thickness of less than ten nanometers, have remarkable mechanical strength and can suspend over micron-sized holes to form free-standing membranes. We discuss experiments probing the tensile strength and bending stiffness of these self-assembled nanoparticle sheets. The fracture behavior of monolayers and multilayers is investigated by atta...

متن کامل

Design of patchy particles using quaternary self-assembled monolayers.

Binary and ternary self-assembled monolayers (SAMs) adsorbed on gold nanoparticles (NPs) have been previously studied for their propensity to form novel and unexpected patterns. The patterns found were shown to arise from a competition between immiscibilty of unlike surfactants and entropic gains due to length or other architectural differences between them. We investigate patterns self-assembl...

متن کامل

Assembling of Magnetic Iron Oxide Nanoparticles Controlled by Self- Assembled Monolayers of Functional Coordinating or Chelating Trialkoxysilanes

Magnetic nanoparticles (NPs) have been assembled in films by using self-assembled monolayers (SAMs) of organic molecules. SAMs were prepared by the reaction of organotrialkoxysilanes with surface silanol groups of silicon wafers. SAMs were prepared and their surface was decorated either by amine or thymine groups which have the ability to immobilize iron oxide nanoparticles as monolayers. These...

متن کامل

Effect of Temperature and Reaction Time on the Morphology and Phase Evolution of Self-assembled Cu7.2S4 Nanospheres Obtained from Nanoparticles and Nanorods Synthesized by Solvothermal Method

In this research, self-assembled copper sulfide nanospheres were synthesized by the solvothermal method and the effects of reaction parameters, including reaction time and reaction temperature on the morphology and phase evolution of copper sulfide nanostructures were investigated. For the identification of copper sulfide nanostructures, X-ray diffraction (XRD), infrared spectroscopy (FT-IR), f...

متن کامل

The pH-dependent adhesion of nanoparticles to self-assembled monolayers on gold

The effect of pH on the adhesion of silica and polystyrene latex nanoparticles, presenting hydroxyl and carboxyl acid surface chemistries respectively, to self-assembled monolayers (SAMs) has been investigated. The SAMs studied were 1-dodecanethiol, 11-mercaptoundecanoic acid and an original pyridine-terminated SAM. Adhesion of nanoparticles to the SAMs was found to decrease with increasing pH ...

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:

دوره 1  شماره 

صفحات  -

تاریخ انتشار 2010