A5090973201- Advanced Sensor and Energy Harvesting Materials
- Analytical Chemistry and Sensors
- Biosensors and Analytical Detection
- Electrospun Nanofibers in Biomedical Applications
- Nanomaterials and Printing Technologies
- Gas Sensing Nanomaterials and Sensors
- Wound Healing and Treatments
- Conducting polymers and applications
- Advanced Chemical Sensor Technologies
- 3D Printing in Biomedical Research
- Electrochemical sensors and biosensors
- Advancements in Transdermal Drug Delivery
- Tactile and Sensory Interactions
- Electrochemical Analysis and Applications
- Neuroscience and Neural Engineering
- Microfluidic and Capillary Electrophoresis Applications
- Electrowetting and Microfluidic Technologies
- Gastrointestinal Bleeding Diagnosis and Treatment
- Dermatology and Skin Diseases
- Microfluidic and Bio-sensing Technologies
- Energy Harvesting in Wireless Networks
- Gut microbiota and health
- Clostridium difficile and Clostridium perfringens research
- Dielectric materials and actuators
- Gastrointestinal motility and disorders
Purdue University West Lafayette
2016-2025
Niroo Research Institute
2021
Institute of Nanotechnology
2016-2020
State Street (United States)
2017-2019
Kermanshah University of Medical Sciences
2017
Abstract Chronic wounds are a major health concern and they affect the lives of more than 25 million people in United States. They susceptible to infection leading cause nontraumatic limb amputations worldwide. The wound environment is dynamic, but their healing rate can be enhanced by administration therapies at right time. This approach requires real‐time monitoring with on‐demand drug delivery closed‐loop manner. In this paper, smart automated flexible dressing temperature pH sensors...
In this paper, we present a simple and low-cost technique for fabricating highly stretchable (up to 100% strain) sensitive (gauge factor of up 20 000) strain sensors. Our is based on transfer embedment carbonized patterns created through selective laser pyrolization thermoset polymers, such as polyimide, into elastomeric substrates (e.g., PDMS or Ecoflex). Embedded materials are composed partially aligned graphene carbon nanotube (CNT) particles show sharp directional anisotropy, which...
The development of stretchable sensors has recently attracted considerable attention. These have been used in wearable and robotics applications, such as personalized health-monitoring, motion detection, human-machine interfaces. Herein, we report on a highly electrochemical pH sensor for point-of-care applications that consists pH-sensitive working electrode liquid-junction-free reference electrode, which the conductive interconnections are fabricated by laser carbonizing micromachining...
Biodegradable nanofibrous polymeric substrates are used to fabricate suturable, elastic, and flexible electronics sensors. The fibrous microstructure of the substrate makes it permeable gas liquid facilitates patterning process. As a proof-of-principle, temperature strain sensors fabricated on this elastic tested in vitro. proposed system can be implemented field bioresorbable emerging area smart wound dressings. service our authors readers, journal provides supporting information supplied...
Abstract Chronic wounds affect over 6.5 million Americans and are notoriously difficult to treat. Suboptimal oxygenation of the wound bed is one most critical treatable management factors, but existing systems do not enable concurrent measurement delivery oxygen in a convenient wearable platform. Thus, we developed low-cost alternative for continuous O 2 sensing comprising an inexpensive, paper-based, biocompatible, flexible platform locally generating measuring region. The takes advantage...
In this Research Article, we demonstrate a facile method for the fabrication of porous-carbon/silver nanocomposites using direct laser writing on polymeric substrates. Our technique uses combination CO2 laser-induced carbonization and selective silver deposition polyimide sheet to create flexible highly conductive traces. The localized irradiation selectively converts porous carbonized film with superhydrophilic wettability. resulting pattern allows trapping aqueous ionic ink solutions into...
Typical soil health assessment requires intensive field sampling and laboratory analysis. Although this approach yields accurate results, it can be costly labor not suitable for continuous tracking of properties. Advances in sensor wireless technologies are poised to replace physical offline measurement with in-field monitoring. This article reports the development, deployment, validation an Internet-of-Things (IoT) system monitoring health. The end nodes proposed system, called units...
Precision Agriculture (PA) is an integral component of the contemporary agricultural revolution that focuses on enhancing food productivity in proportion to increasing global population while minimizing resource waste. While recent advancements PA, such as integration IoT (Internet Things) sensors, have significantly improved surveillance field conditions achieve high yields, presence batteries and electronic chips makes them expensive non-biodegradable. To address these limitations, for...
In this paper, we review new and emerging energy sources for wireless implantable microdevices. After a brief historical background, the developments in power decades following pioneering works of Zworykin Mackay late 1950s. These include deployment lithium batteries inductive powering 1970s, which resulted significant growth commercialization medical devices, such as cardiac pacemakers cochlear implants. Recent research nanoscale materials generation has created intriguing possibilities...
Abstract Copper (Cu) and its alloys have been shown to eradicate a wide range of multidrug‐resistant microbes upon direct contact. In this study, facile one‐step laser texturing (LT) process is demonstrated effectively enhance the bactericidal properties copper surfaces via concurrent selective modification surface topography chemistry textured (LT‐Cu). Surface morphology elemental composition are analyzed field emission scanning electron microscopy (FE‐SEM), energy‐dispersive X‐ray...
In this paper, we present a novel laser-induced oxidation procedure for in situ formation of nickel oxide nanoporous structures directly onto the surface as highly sensitive nonenzymatic glucose sensor. The mesoporous is confirmed by field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and diffraction. Electrochemical properties pristine oxidized (LIO-Ni) films were studied using cyclic voltammetry electrochemical impedance spectroscopy. unique three-dimensional...
Gut microbiota plays an important role in host physiology such as obesity, diabetes, and various neurological diseases. Thus, microbiome sampling is a fundamental approach towards better understanding of possible However, conventional methods, endoscopies or colonoscopies, are invasive cannot reach the entire small intestine. To address this need, battery-less 3D-printed capsule, which can collect samples throughout entirety GI tract was designed. The capsule (9 mm × 15 mm) consists 3D...
This work presents a low-cost, passive, flexible, polymeric pump for topical drug delivery which uses wound pH as trigger localized release. Its operation relies on pH-responsive hydrogel actuator swells when exposed to the alkaline of an infected wound. The enables slow release (<0.1 μL min-1) aqueous anti-bacterial solution up 4 hours and sustains against 8 kPa backpressure. Featuring scalable layer-by-layer fabrication technique expand into 2 × array, device can dispense 50 μl onto 160...
Chronic nonhealing wounds are a growing socioeconomic problem that affects more than 6 million people annually solely in the United States. These colonized by bacteria often develop into biofilms act as physical and chemical barrier to therapeutics tissue oxygenation leading chronic inflammation hypoxia. Although wound debridement vigorous mechanical abrasion techniques used clinical professionals manage remove from surfaces, such methods highly nonselective painful. In this study, we have...
Abstract In this work, a scalable and rapid process is developed for creating low‐cost humidity sensor wireless monitoring of moisture levels within packaged goods. The comprises moisture‐sensitive interdigitated capacitor connected to planar spiral coil, forming an LC circuit whose resonant frequency function environmental humidity. fabricated on commercially available metallized parchment paper through selective laser ablation the laminated aluminum (Al) film substrate. provides unique...
During the γ-radiation sterilization process, levels of radiation exposure to a medical device must be carefully monitored achieve required without causing deleterious effects on its intended physical and chemical properties. To address this issue, here we have demonstrated development an all-printed disposable low-cost sensor that exploits change in electrical impedance semi-interpenetrating polymer network (SIPN) composed poly(vinyl alcohol) (PVA)...
Cellular tight junctions play a key role in establishing barrier between different compartments of the body by regulating selective passage solutes across epithelial and endothelial tissues. Over past decade, significant efforts have been conducted to develop more clinically relevant "organ-on-a-chip" models with integrated trans-epithelial electrical resistance (TEER) monitoring systems help better understand fundamental underpinnings tissue physiology upon exposure substances. However,...
Conductive polymers and their composite materials have attracted considerable interest due to potential applications in sensors, actuators, drug delivery systems, energy storage devices. Despite wide range of applications, many challenges remain primarily with respect the complex synthesis time-consuming manufacturing steps that are often required fabrication process various devices conductive polymers. Here, we demonstrate novel use cold atmospheric plasma (CAP)-assisted deposition...
A substantial number of critically ill patients in intensive care units (ICUs) rely on indwelling urinary catheters (IDCs), demanding regular monitoring urine bags. This process increases the workload for healthcare providers and elevates risk exposure to contagious diseases. Moreover, IDCs are a primary cause catheter-associated tract infections (UTIs) ICU whose delayed detection can have life-threatening complications. To address this, we developed Sticker Type Antenna Remote Sensing...