Our Patents

We are proud to share our contribution in relevant fields of scientific interest through publications and numerous individual patents granted across multiple geographies.

Sl No Patent Number Title
1 US 8647742 Diagnostic gel composition, method for making a diagnostic gel composition
2 CN102811815B Method for making and using a diagnostic element
3 JP5661795B2 Diagnostic Element, and a diagnostic device comprising a diagnostic element
4 US 870934 Methods of making a diagnostic device by interweaving hydrophobic and hydrophilic fibers, and diagnostic device therefrom
5 JP5775157B2 Methods of making a diagnostic device and diagnostic device therefrom
6 US9714912B2 Compositions for fabric based lateral flow assay device using electrochemical detection means, and devices therefrom
7 US20180072987A1 Method for extracting viable sperms from a semen sample

Fabric Technology

Achira has developed a revolutionary new fabric-based technology to perform lateral flow and electrochemical assays. Using our patented approach, yarn coated with reagents is woven into fabric that can be cut into strips and packaged to make individual or multiplexed test sensors. Strips of this fabric can then be cut out to perform simple, capillary flow-based tests. The inherent scalability of the textile manufacturing process can lead to significant cost savings and ease of manufacturability. The uniqueness of the fabric platform lends itself easily to low resource settings, easy to make through single step assembly process with the potential of using local skills and networks. Achira has partnered with community organizations to weave and assemble skills at the point of care with the aim of generating employment and increasing local availability of tests.

Electrochemical sensors
We have built a textile weaving based platform for the manufacture of electrochemical sensors, which has several advantages over existing techniques. Here, yarns that have been pre-coated with conducting inks and reagents, are woven into fabric at the required location to mass manufacture sensors in a single step (Fig. 1). In contrast to screen-printed sensors, yarn coating can be carried out with exactly the required volume of reagents and inks resulting in lower costs and lower environmental damage.

Achira has also built lateral-flow immunosensors on the fabric platform. The main advantage over nitrocellulose membranes is that the entire assembly, including conjugate reagents, test and control lines as well as absorbing membranes can be assembled in one step on a loom. The properties of the absorbing medium can be tuned by changing yarn, weaving style and coatings.

Our published work on fabric technology: The following papers have already been published by us on the fabric platform, giving it a solid scientific foundation enabling further product development.

Immunosensors (1), electrochemical sensors (2,5) and SERS (3, Surface Enhanced Raman Spectroscopy) sensors have all been demonstrated on the fabric platform.


Our publications and patents are a testimony to our endeavor towards cutting-edge research, lending credibility to our innovative technology development

Santosh Kumar Bikkarolla, Kavipriya Venkatesan, Yeddula Rebecca Revathy, Sowmya Parameswaran, Subramanian Krishnakumar and Dhananjaya Dendukuri
January 8, 2024
Explore our latest publication titled “The Quantitative Detection of Cystatin-C in Patient Samples Using a Colorimetric Lateral Flow Immunoassay”, accomplished through a collaborative effort with Vision Research Foundation Chennai.

Congratulations and kudos to Santosh Bikkarolla, Kavipriya Venkatesan, Dhananjaya Dendukuri, and our collaborators from VRFC for all your efforts!

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Paridhi Bhandari, Tanya Narahari & Dhananjaya Dendukuri
February 11, 2014
‘Fab-chips’: a versatile, fabric-based platform for low-cost, rapid and multiplexed diagnostics. Lab on a Chip 11, 2011. no. 15, 2493-2499

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Satish Kalme, Srinivasan Kandaswamy, Anusha Chandrasekharmath, Reeta Katiyar, Gokul Prasath Rajamanickam, Suraj Kumar and Dhananjaya Dendukuri
A hydrogel sensor-based microfluidic platform for the quantitative and multiplexed detection of fertility markers for point-of-care immunoassays Anal. Methods, 2019,11, 1639-1650 DOI: 10.1039/C8AY02641F

Robinson, A. M. et al.
The development of “fab-chips” as low-cost, sensitive surface-enhanced Raman spectroscopy (SERS) substrates for analytical applications. Analyst, 2015,140, 779-785 Doi:10.1039/C4AN01633E (2015)

Manasa, K. et al.
Signals, Systems and Computers, 2013 Asilomar Conference 245-247 (IEEE)

Tripurari Choudhary, G. P. Rajamanickam and Dhananjaya Dendukuri
Woven electrochemical fabric-based test sensors (WEFTS): a new class of multiplexed electrochemical sensors Lab Chip, 2015,15, 2064-2072 DOI: 10.1039/C5LC00041F

Anil Modali, Siva Rama Krishna Vanjari and Dhananjaya Dendukuri
Wearable Woven Electrochemical Biosensor Patch for Non‐invasive Diagnostics Electroanalysis Volume 28, Issue 6, June 2016, Pages 1276-1282 https://doi.org/10.1002/elan.201600041

Neha Srivathsa and Dhananjaya Dendukuri
Automated ABO Rh-D blood type detection using smartphone imaging for point-of-care medical diagnostics: 2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) Publication Year: 2016, Page(s): 4345 – 4348 DOI: 10.1109/EMBC.2016.7591689