Person:
Palaparthy, Vinay

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Vinay Palaparthy

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Faculty

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079-68261677

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Micro-Electro-Mechanical Systems (MEMS), Physics of Sensors, 2D materials, Memristor, Self-healing System Design, Embedded System Design, IoT, AI/ML

Abstract

Biography

Vinay Palaparthy is working as the associate professor in DA-IICT. He has received Ph.D degree from Indian institute of Technology Bombay (IIT Bombay). During the course of his research, he has developed the soil moisture/ leaf wetness��sensors and system for the in-situ agriculture applications. Micro/Nano soil moisture sensors are developed for the agriculture applications by using carbon nanomaterials like graphene oxide, graphene quantum dots, MOFs, MoS2 and Mxene. He is widely focused on identifying the issues and problem faced in Indian agriculture/space applications�and provide an IT/ECE based solutions. He has around 7 years of research experience in the field of MEMS and System design. He has 23 international journals, 11 conference papers and 7�patent filed on his work. He has one best paper award in international journal. He is a co-recipient of Millennium Alliance award for the start-up name Proximal Soilsens Technologies Pvt. Ltd, where he is a co-founder and director.

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2020 - 202526

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Search Results

Now showing 1 - 10 of 27
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    In-House Developed Graphene-Based Leaf Wetness Sensor With Enhanced Stability
    (IEEE, 01-06-2025) Patle, Kamlesh; Yogi, Pooja; Maru, Devkaran; Palaparthy, Vinay; Moez, Kambiz; Agrawal, Yash; DA-IICT, Gandhinagar
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    Detection of Small Water Droplets on Flexible Leaf Wetness Sensor Considering Effect of Spatiotemporal Variation
    (IEEE, 10-07-2025) Yogi, Pooja; Pawar, Avinash D; Khaparde, Priyanka; Garg, Pooja; Kalita, Hemen; Palaparthy, Vinay; DA-IICT, Gandhinagar
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    An in-field integrated capacitive sensor for rapid detection and quantification of soil moisture
    (Elsevier, 15-10-2020) Surya, Sandeep G; Yuvaraja, Saravanan; Varrla, Eswaraiah; Baghini, Maryam Shojaei; Salama, Khaled N; Palaparthy, Vinay; DA-IICT, Gandhinagar
    The development of in-situ soil moisture sensors (SMS) with advanced materials is the requirement of the future autonomous agriculture industry. However, an open challenge for these sensors is to control changes in the capacitance rather than resistance while attaining reliability, high performance, scalability and stability. In this work, a series of materials such as Graphite oxide (GO), Molybdenum disulfide (MoS2), Vanadium oxide (V2O5), and Molybdenum oxide (MoO3) are tested in realizing a receptor layer that can efficiently sense soil moisture. Here, we found that MoS2�offers the sensitivity, which is nearly three times higher (1200?pF) than in the case of V2O5�for any given range of soil-moisture content outperforming both GO and MoO3�materials. The corresponding increase in the sensitivities for MoO3, GO, MoS2, and V2O5�are ?13 %, ?11 %, ?30 %, and ?9 % respectively, for a variety of temperature up to 45?�C. A temperature variation of 25?�C to 50?�C showed a minimal increase in the sensitivity response for all the devices. We further demonstrated a record sensitivity of 540 % with MoS2�in black soil and the corresponding response time was 65?s. Finally, the recovery time for the MoS2�sensor is 27?s, which is quite fast.
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    Experimental Investigation of Leaf Wetness Sensing Properties of MoS2 Nanoflowers-Based Flexible Leaf Wetness Sensor
    (IEEE, 01-02-2023) Khaparde, Priyanka; Patle, Kamlesh S; Agrawal, Yash; Borkar, Hitesh; Palaparthy, Vinay; Gangwar, Jitendra; Roy, Anil; Agrawal, Yash; Palaparthy, Vinay; Roy, Anil; Patle, Kamlesh S (202121017)
    To abate crop loss, it is important to explore the plant disease management systems, where leaf wetness sensors (LWS) are widely used. The leaf wetness duration (LWD) extracted from the LWS is related to plant diseases. In this work, we have fabricated the LWS on the polyamide flexible substrate where Molybdenum disulfide (MoS2) is used as the sensing film to explore the leaf wetness sensing mechanism. Further, we have passivated the MoS2�with the help of acrylic protective lacquer (APL) conformal coating (MoS2�+ APL), which reduce the interaction of the water molecules with the sensor. Lab measurements indicated that fabricated LWS on the flexible substrate with MoS2�and MoS2�+ APL as the sensing film offers a response of about ? 40 000% and ? 250%, respectively, at 500 Hz excitation frequency when the entire sensing area is filled with the water molecule. The response time of the MoS2�and APL-coated flexible sensor is about 180 s. Fabricated LWS sensors offer hysteresis of about � 4% in wetness. Further, we have identified that oxidation of the sulphur in the MoS2�plays an important role in the leaf wetness sensing mechanism. Furthermore, we understood that MoS2�when passivated with APL coating, the oxidation effect is reduced and the sensor response is negligible.
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    Impact of Electrode Patterns Variation on the Response Characteristic of Leaf Wetness Sensors
    (IEEE, 05-08-2024) Patle, Kamlesh S; Sharma, Neha; Khaparde, Priyanka; Varshney, Harsh; Bhatti, Gulafsha; Agrawal, Yash; Palaparthy, Vinay; DA-IICT, Gandhinagar; Patle, Kamlesh S(202121017); Sharma, Neha (202211051); Varshney, Harsh (202211001); Bhatti, Gulafsha (202021005)
    Prediction of plant diseases is essential to reduce crop loss. Early disease prediction models have been investigated for this purpose, where data on leaf wetness duration (LWD) is one of the key components. Leaf wetness sensors (LWSs) are used to better understand how foliar wetness affects plant disease cycles and epidemic development. LWS can be fabricated on printed circuit boards (PCBs), where interdigitated electrode patterns are widely used. However, it is important to understand the efficacy of these patterns for in-situ measurements. For this purpose, in this work, we have fabricated three different patterns viz. circular, oval, and rectangular on the PCB and tested their efficacy during lab and field measurements. Lab measurements indicate that the circular patterned LWS offers a sensitivity of about 1600% over the dry-to-wet range, which is about 2 and 1.5 times more than oval and rectangular patterns, respectively. Besides this, circular patterned LWS offers the hysteresis of about 2%, whereas the oval and rectangular patterned LWS show about 3% and 7%, respectively. Field measurement results specify that circular patterned LWS and commercial LWS Phytos 31 indicate the same number of LWD events. However, oval and rectangular patterned LWS shows extra false events.
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    Signal integrity analysis of bundled carbon nanotubes as futuristic on-chip interconnects
    Parekh, Rutu; Agrawal, Yash; Parekh, Rutu; Palaparthy, Vinay; Agrawal, Yash; Pathade, Takshashila; Palaparthy, Vinay; DA-IICT, Gandhinagar; Pathade, Takshashila
    Rigorous technology scaling of integrated circuits to�nanometer range�aids to acquire prodigious operational speed and versatile functionality in system-on-chip. However, this leads to escalation in interconnect parasitics and non-ideal issues that have become primary bottleneck in the existing copper based on-chip interconnect system. Graphene based�carbon nanotube�bundle has emerged as prospective interconnect for high speed applications. This paper focuses on bundled carbon nanotubes and their different spatial arrangements viz. single wall CNTs (SWCNTs), multiwall CNTs (MWCNTs) and mixed CNT bundles (MCBs). Such�bundle configurations�boost the performance of system in terms of reducing system latency and�power consumption�in addition providing system reliability. The significant novel contribution of this paper lies in executing eye-diagram analysis of the futuristic bundled CNT structures as interconnects. Eye-diagram is an important tool for analysing signal integrity effects. The several performance analyses have been performed in SPICE and ADS EDA tools at 22?nm technology node.
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    Signal integrity analysis of bundled carbon nanotubes as futuristic on-chip interconnects
    (Elsevier, 16-02-2021) Pathade, Takshashila; Parekh, Rutu; Parekh, Rutu; Agrawal, Yash; Palaparthy, Vinay; Agrawal, Yash; Palaparthy, Vinay; DA-IICT, Gandhinagar; Pathade, Takshashila (201621013)
    Rigorous technology scaling of integrated circuits to�nanometer range�aids to acquire prodigious operational speed and versatile functionality in system-on-chip. However, this leads to escalation in interconnect parasitics and non-ideal issues that have become primary bottleneck in the existing copper based on-chip interconnect system. Graphene based�carbon nanotube�bundle has emerged as prospective interconnect for high speed applications. This paper focuses on bundled carbon nanotubes and their different spatial arrangements viz. single wall CNTs (SWCNTs), multiwall CNTs (MWCNTs) and mixed CNT bundles (MCBs). Such�bundle configurations�boost the performance of system in terms of reducing system latency and�power consumption�in addition providing system reliability. The significant novel contribution of this paper lies in executing eye-diagram analysis of the futuristic bundled CNT structures as interconnects. Eye-diagram is an important tool for analysing signal integrity effects. The several performance analyses have been performed in SPICE and ADS EDA tools at 22?nm technology node.
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    Signal Integrity Analysis of Biodegradable Stretchable Interconnect for Wearable Application
    (IEEE, 01-07-2025) Bhatti, Gulafsha; Maru, Devkaran; Patle, Kamlesh; Shah, Kinnaree; Palaparthy, Vinay; Agrawal, Yash; DA-IICT, Gandhinagar
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    Soil Moisture Sensing Properties of the Ti3C2T x Mxene-Based Soil Moisture Sensor on Vadose Zone Soils
    (ACS Publications, 04-01-2024) Maru, Devkaran; Pani, Jitesh; Borkar, Hitesh; Palaparthy, Vinay; DA-IICT, Gandhinagar
    One of the crucial variables for accurate irrigation models is soil moisture data. Recent advancement in microsensors has opened avenues to fabricate low-cost and highly sensitive soil moisture sensors for in situ measurements. For these microsensors, sensing films play a pivotal role, considering the selectivity and sensitivity. In this work, we have explored the Ti3C2Tx MXene two-dimensional (2D) nanomaterials as the soil moisture sensor�s sensing film. For this purpose, the interdigitated electrodes (IDEs) have been fabricated on the silicon substrate using the micromanufacturing method. To understand the characteristics of the Ti3C2Tx MXene 2D nanomaterials, X-ray diffraction (XRD) is adopted to confirm the structural analysis. Fourier transform infrared (FTIR) spectroscopy is carried out to identify the exciting chemical bonds for Ti3C2Tx MXene. Scanning electron microscopy (SEM) and energy-dispersive X-ray (EDX) analysis are used to study the morphology and elemental composition of Ti3AlC2 MAX and Ti3C2Tx MXene phases, respectively. Further, the sensor transfer function has been studied for three different soil samples, viz., clayey soil, loamy sand soil, and sandy loam soil, under laboratory conditions. The performed measurements indicate that the response of fabricated soil moisture sensors is about 500, 2400, and 1700% for the clayey, loamy sand, and sandy loam soils at 300 Hz, respectively, for the gravimetric water content (GWC) ranging from 1 to 18% GWC. Interestingly, the hysteresis of the fabricated sensor on the loamy sand soil is about �1% GWC, whereas for the sandy loam and clayey soils, it is around �3 and �6% GWC, respectively. Further, the fabricated sensor shows a high selectivity toward the water molecule when compared with the other ions (Cu+, Cd+, Na+, and K+) in the soil samples.
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    Institution of Metal-Organic Frameworks as a Highly Sensitive and Selective Layer In-Field Integrated Soil-Moisture Capacitive Sensor
    (American Chemical Society, 20-01-2023) Alsadun, Norah; Surya, Sandeep; Patle, Kamlesh; Shekhah, Osama; Salama, Khaled N; Eddaoudi, Mohamed; Palaparthy, Vinay; DA-IICT, Gandhinagar; Patle, Kamlesh S (202121017)
    The ongoing global industrialization along with the notable world population growth is projected to challenge the global environment as well as pose greater pressure on water and food needs. Foreseeably, an improved irrigation management system is essential and the quest for refined chemical sensors for soil-moisture monitoring is of tremendous importance. Nevertheless, the persisting challenge is to design and construct stable materials with the requisite sensitivity, selectivity, and high performance. Here, we report the introduction of porous metal�organic frameworks (MOFs), as the receptor layer, in capacitive sensors to efficiently sense moisture in two types of soil. Namely, our study unveiled that Cr-soc-MOF-1 offers the best sensitivity (?24,000 pF) among the other tested MOFs for any given range of soil-moisture content, outperforming several well-known oxide materials. The corresponding increase in the sensitivities for tested MOFs at 500 Hz are ?450, ?200, and ?30% for Cr-soc-MOF-1, Al-ABTC-soc-MOF, and Zr-fum-fcu-MOF, respectively. Markedly, Cr-soc-MOF-1, with its well-known water capacity, manifests an excellent sensitivity of ?450% in clayey soil, and the analogous response time was 500 s. The noted unique sensing properties of Cr-soc-MOF-1 unveils the great potential of MOFs for soil-moisture sensing application.