Cantilever deflection read-out with a grated waveguide optical cavity

نویسنده

  • S. V. Pham
چکیده

We propose a novel and highly sensitive mechanooptical device for gas-sensing through nano-displacements, based on micro-cantilevers, supplied with a selective gas absorbing layer (Pd), suspended above a Si3N4 grated waveguide (GWG). We present the simulation and preliminary experimental results, which indicate the sensing of nanodisplacements, an important intermediate step for the gas-sensing purpose.

برای دانلود 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

Grated Waveguide Optical Cavity as a Compact Sensor for Sub-nanometre Cantilever Deflections

We propose a novel and highly sensitive integrated read-out scheme, capable of detecting sub-nanometre deflections of a cantilever in close proximity to a grated waveguide structure. We discuss modelling results for an SiO2 cantilever to be integrated with an optical cavity defined by a grated Si3N4 waveguide.

متن کامل

A novel mechano-optical sensor based on read-out with a Si3N4 grated waveguide

Microcantilever-based sensors can be used to detect molecular absorption of, for example, hydrogen gas, which causes changes in the surface stress, leading to deflection of the cantilever. Such a deflection can be determined by means of optical beam deflection, capacitance-, or piezo-resistance based readout. We have recently proposed a compact integrated mechano-optical sensor using a novel an...

متن کامل

Grated Waveguide-based Optical Cavities as Compact Sensors for Sub-nanometre Cantilever Deflections, and Small Refractive-index Changes

The paper reports on theoretical and experimental results of integrated optical (IO) cavities defined by grated waveguides in Si3N4 and Si, for the accurate detection of cantilever deflection and bulk index changes. Microcantilever-based sensors can be used to detect molecular adsorption, which causes changes in the surface stress [1], leading to deflection of the cantilever. We propose a novel...

متن کامل

Grated Waveguide Optical Cavity for Sensing

We demonstrate the versatility of a silicon nitride grated waveguide optical cavity as compact integrated optical sensors for (bulk) concentration detection, label-free protein sensing, and – with an integrated cantilever suspended above it – gas sensing. Keywords-integrated optics, sensing, waveguide, grating

متن کامل

Fabrication of microcantilever-based IO grated waveguide sensors for detection of nano-displacements

We propose a novel and highly sensitive integrated read-out scheme, capable of detecting sub-nanometre deflections of a cantilever in close proximity to a grated waveguide structure. A very compact and stable sensor element can be realized by monolithically integrating a microcantilever structure with the grated waveguide (GWG), using conventional layer deposition and sacrificial layer etching ...

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

برای دانلود 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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010