Person: Palaparthy, Vinay
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Name
Vinay Palaparthy
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Faculty
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079-68261677
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Specialization
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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27 results
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Now showing 1 - 10 of 27
Publication Metadata only 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, GandhinagarPublication Metadata only Reliability Assessment using Electrical and Mechanical Characterization of Stretchable Interconnects on Ultrathin Elastomer for Emerging Flexible Electronics System(IEEE, 10-07-2025) Bhatti, Gulafsha; Sharma, Rohit; Kumar, Mekala Girish; Palaparthy, Vinay; Agrawal, Yash; DA-IICT, GandhinagarPublication Metadata only 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, GandhinagarPublication Metadata only Highly sensitive graphene oxide leaf wetness sensor for disease supervision on medicinal plants(Elsevier, 01-09-2022) SPatle, Kamlesh; Dehingia, Biswajit; Kalita, Hemen; Palaparthy, Vinay; DA-IICT, Gandhinagar; Patle, Kamlesh S (202121017)Plant disease prediction plays a pivotal role to abate the crop loss. For this purpose, early disease prediction models have been explored, where information about leaf wetness duration (LWD) is one of the important factors. The leaf wetness duration is measured with the help of leaf wetness sensors (LWS). Here, the LWS is fabricated on the polyamide�flexible substrate�where graphene oxide (GO) is used as the sensing film to detect the water molecules on the leaf canopy. Fabricated GO LWS has been tested under laboratory conditions, we exposed the entire sensing film with water molecule and we observed that it offers response of about 45000�% with respect to the air. Subsequently, observed response time of the fabricated sensor is around 400�s with recovery time of about 100�s. Further, the fabricated sensor shows only 2�% change in the response when exposed to the temperature ranging from 20�0C to 65�0C. Under field conditions, to explore the efficacy of the fabricated LWS, we benchmarked the LWD measured using the GO LWS with commercial LWS (Phytos 31). We have deployed the fabricated GO LWS along with Phytos 31 on the Tulsi (Ocimum tenuiflorum) medical plant. The on-field testing of the GO LWS indicates that maximum difference in LWD value using fabricated GO LWS and Phytos 31 is around���30�min.Publication Metadata only 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, GandhinagarThe 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.Publication Metadata only 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.Publication Metadata only 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.Publication Metadata only Graphene Oxide Array for In-Depth Soil Moisture Sensing toward Optimized Irrigation(ACS Publication, 01-12-2020) Siddiqui, Mohd Salman; Kalita, Hemen; Baghini, Maryam Shojaei; Aslam, Mohammed; Palaparthy, Vinay; DA-IICT, GandhinagarA capacitive approach is employed to find moisture of the soil at various depths (4.5�20 cm). The sensor probe having dimensions 22 � 4 � 0.5 cm3, embedded with a series of five microsensors (scalable according to the need), is developed using a graphene oxide (GO) sensor array. The measurement electrodes were designed in an interdigitated manner having eight pairs of comblike-shaped fingers with 100 nm thickness and 90 ?m spacing. It has been observed that, for black soil, all of the microsensors displayed response in the range of 500�550% when the soil water content is varied from 3.2 to 55.5%. The graphene oxide-based array probe sensor (GO-APS) shows fast response and recovery time of 140 and 20 s, respectively, for 10% soil moisture samples. The soil moisture profile has been monitored up to a scale of 20 cm depth using the fabricated design. In-depth soil moisture profiling shows a maximum deviation of �2.4% compared with a standard oven-drying method. The lump formation effect in soil mass showed a maximum deviation of �4% for the GO-APS array. This robust and low-cost GO-APS with high sensitivity is promising for technological advances in agricultural application.Publication Metadata only Signal integrity analysis of bundled carbon nanotubes as futuristic on-chip interconnectsParekh, Rutu; Agrawal, Yash; Parekh, Rutu; Palaparthy, Vinay; Agrawal, Yash; Pathade, Takshashila; Palaparthy, Vinay; DA-IICT, Gandhinagar; Pathade, TakshashilaRigorous 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.Publication Metadata only 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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