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In Demand



Super Fast


Smart Optical Transducer based on
Surface Plasmon Resonance
for efficient sensing
  • A low budget Surface Plasmon Resonance (SPR) sensing system.

  • A controlled system which provides a very high resolution of the order of several micro-degrees.

  • High-quality components and a unique feedback support ensures highly precise performance.

  • One of the best optical sensors for label-free interaction analysis used in most of the well-known industries, biological research centers, and medical sectors.

Patent information

Patent #2644/DEL/2014

A Genuine Product

Supported by DST-India


BITS - Pilani, Rajasthan

  • Compatible with Windows 10 Professional/latest Windows operating systems.

  • A single USB connection and 230V, 5A, 50Hz power supply is sufficient.

  • Low weight portable system needs only 1m x 1m x 1.5m space to install.

  • A few steps to install. Very much user friendly due to a very comfortable Graphical User Interface (GUI).

  • Variety of Flowcells & tubes, compatible for gas and liquid sensing are available.

Product Info

How it works

The surface plasmon resonance is an optical phenomenon which has been successfully employed for studying the molecular specific interaction. This is fundamental for any sensing application. This instrument work in the Kretschmann configuration which is highly sensitive and ensures high resolution. The instrument is designed using a very stable 630 nm diode laser and a highly efficient array detector. The instrument offers fixed point-of-interrogation which ensures the fixed reference during the measurement. The optical arrangement enhances the reliability of measurement. The instrument utilizes a patented novel optomechanical scanning mechanism.

How it works

Liquid flow cell


Gas flow cell


IV  flow cell


Temperature flow cell


Patent Title

 A novel optomechanical system for measuring surface plasmon resonance

Reference no: E-101/99275/2014-DEL, Application no: 2644/DEL/2014


  • Morphological transformation in supramolecular assembly of discotic liquid crystal molecules by silver nanoparticles and its sensing application" by Ashutosh Joshi, V. Manjuladevi, Raj Kumar Gupta, Sandeep Kumar, Nanotechnology, IOPscience, 2020. DOI: 10.1088/1361-6528/ab93eb

  • Surface Plasmon Resonance of ultrathin films of nematic liquid crystal molecules, Ashutosh Joshi, Amrit Kumar, Manjuladevi V, R. K. Gupta, International Conference on Liquid Crystals, Liquid Crystalline Polymers and Nanosystems (ICLCPN-2019), Kottayam, Kerala, 13-15 December 2019.

  • Nanofibers of triphenylene based discotic liquid crystals, Ashutosh Joshi, V. Manjuladevi, S. Kumar, R. K. Gupta, 3rd International Conference on Soft Materials, MNIT, Jaipur, 9-14 December 2018.

  • Surface plasmon resonance sensor based on a new optomechanical scanning mechanism, Devanarayanan V. P., V. Manjuladevi, & R. K. Gupta*, Sensors & Actuators B: Chemical (Elsevier), Vol 227, pg 643-648, 2016. DOI:10.1016/j.snb.2016.01.027.

  • Measurement of optical anisotropy in ultrathin films using surface plasmon resonance, Devanarayanan VP, Manjuladevi V., Monika Poonia, RK Gupta*, SK Gupta, and J. Akhtar, Journal of Molecular Structure (Elsevier), Vol 1103, pg 281-285, 2016. DOI: 10.1016/j.molstruc.2015.09.018.

  • SURFACE PLASMON RESONANCE STUDY OF LANGMUIR-BLODGETT FILMS OF STEARIC ACID, Devanarayanan.V.P., Raj Kumar Gupta, V. Manjuladevi, Monika Poonia, Sanjeev Gupta and Jamil Akthar, International Journal of Physics and Mathematical Sciences, Vol-2, Issue S1, Pages 19-21. 

  • Interaction of graphene with self-assembled monolayers, Devanarayanan VP, Manjuladevi V, RK Gupta, International Conference on Soft Materials, MNIT Jaipur, 6-10 October 2014.


1.     Bio-sensing

2.   Food safety

3.    Environmental analysis

4.    Environmental analysis

5.    Drug delivery & discovery

6.    Molecular Specific interaction

7.   Optical anisotropy measurement

8.   Sensing in gaseous and liquid medium

About us

About us

We are a team of active researchers in the field of soft condensed matter and related instrumentation. In 2010, we received a project from DST India under Instrument Development Programme for the development of low-cost and portable surface plasmon resonance (SPR) instruments with research grade resolution and sensitivity. We developed the instrument by employing a novel opto-mechanical scanning mechanism (Patent Application  # 2644/DEL/2014). We received a second phase of the DST, India Project in 2017 for transforming the lab prototype developed SPR instrument to a commercial equipment. We demonstrated and validated the equipment in two research labs of India viz. Raman Research Institute, Bangalore and CSIR-CEERI Pilani. The validation is satisfactory and hence the instrument is ready for its commercialization. 


We have very dedicated team members comprising of

Mr. Ashutosh Joshi (PhD scholar)

Dr. Raj Kumar Gupta (Thesis Supervisor and PI)

Dr. Manjuladevi V. (Co-PI)

Dr. Devanarayanan V.P. (Ex - PhD scholar)

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Dr. Raj Kumar Gupta

Department of Physics

BITS - Pilani, Rajasthan

India (333031)


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