Shweta Agarwala

Shweta Agarwala
Aarhus University | AU · Department of Engineering

Ph.D

About

65
Publications
49,700
Reads
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2,094
Citations
Introduction
Leading Projects on Printed electronics and Bioelectronics for applications areas of wearables, biomedical and healthcare and flexible electronics.
Additional affiliations
April 2019 - present
Aarhus University
Position
  • Professor (Assistant)
June 2015 - March 2019
Nanyang Technological University
Position
  • PostDoc Position
July 2014 - July 2014
Sungkyunkwan University
Position
  • Visiting Scientist
Education
August 2007 - July 2011
National University of Singapore
Field of study
  • Electrical and Computer Engineering
August 2006 - May 2007
Nanyang Technological University
Field of study
  • Electrical and Electronics Engineering
August 2000 - May 2004
M.J.P. Rohilkhand University
Field of study
  • Electronics Engineering

Publications

Publications (65)
Article
Full-text available
Wound healing is a complex and dynamic regeneration process, wherein the physical and chemical parameters are continuously changing. Its management and monitoring can provide immense benefits, especially for bedridden patients. This work reports a low-cost, flexible, and fully printed on-skin patch sensor to measure the change in pH and fluid conte...
Article
Full-text available
Printed electronics (PE) is an emerging technology that uses functional inks to print electrical components and circuits on variety of substrates. This technology has opened up new possibilities to fabricate flexible, bendable, and form‐fitting devices at low‐cost and fast speed. There are different printing technologies in use, among which droplet...
Article
Full-text available
Polyvinylidene difluoride (PVDF) and its copolymers are promising electroactive polymers showing outstanding ferroelectric, piezoelectric, and pyroelectric properties in comparison with other organic materials. They have shown promise for applications in flexible sensors, energy-harvesting transducers, electronic skins, and flexible memories due to...
Article
Full-text available
Electrically conducting hydrogels are gaining increasing attention due to their potential application in smart patches, biosensors, functional tissue engineering scaffolds, wound management, and implants. The current review focuses on these novel materials, their synthesis routes, and their composites. Special attention is paid to fabrication route...
Article
Full-text available
Since the discovery of electricity and the creation of the first transistors two centuries ago, the field of electronics has evolved rapidly to become omnipresent in our lives. Today, electronic devices are challenged by new demands in function and performance: they are expected to be lightweight, highly efficient, flexible, smart, and implantable,...
Article
Full-text available
Alignment of carbon nanotubes (CNT) is of great importance for the fabrication of high-speed electronic devices such as a transistor as the electron mobilities can be greatly enhanced with aligned CNT architectures. Here, we report, for the first time, a methodology to obtain preferentially aligned CNT traces on flexible polyimide substrate utilizi...
Conference Paper
Aerosol jet printing is a process under the umbrella of additive manufacturing for conformably putting electronics on unconventional substrates. The project highlights potential of aerosol jet to print conformal and flexible antenna device. Polycaprolactone (PLC) polymer is chosen for its biodegradable nature. A flexible scaffold is fabricated usin...
Article
Singapore hosts 10th International Conference on Materials for Advanced Technologies - Volume 44 Issue 10 - B.V.R. Chowdari, Shweta Agarwala
Article
Full-text available
Carbon nanotubes (CNTs) are 1-dimensional (1D) and flexible nanomaterials with high electric conductivity and a high aspect ratio. These features make CNTs highly suitable materials for the fabrication of flexible electronics. CNTs can also be made into dispersions which can be used as the feedstock material for droplet-based 3D printing technologi...
Article
Full-text available
Fiber reinforced sandwich structures are widely used as structural elements due to their lightweight and high load-bearing capacity. In this paper, effort is taken to fabricate fiber facesheet (0°/90° orientation) and corrugated cores (trapezoidal vertical pillared, core-1 and sinusoidal vertical pillared, core-2) of the sandwich structure using fu...
Conference Paper
Full-text available
This paper presents a feasibility study of using 3D printing technique to fabricate microfluidic sensor for soft robotics. Microfluidic sensor are widely used in lab-on-chip devices for strain and pressure direction. This study explores 3D printing techniques for materials to fabricate microfluidic sensors. We report a simple approach like inkjet-p...
Article
Full-text available
Flexible and stretchable strain sensors are in great demand for many applications like wearables and home health. This work reports a strain sensor fabricated using aerosol jet printing technology on a commercially available bandage to be used as a low-cost wearable. Laser light is explored to sinter the silver nanoparticle ink on low-temperature b...
Article
Full-text available
Three-dimensional (3D) printing has been gaining widespread attention for electronic applications. Aerosol jet printing has emerged as a powerful technique to print new-age sensors and devices on various substrates. In this work, we use simulation studies to optimize the dimensions and design of aerosol jet printed strain sensor for good performanc...
Conference Paper
Full-text available
The monitoring of pH is valuable for many environmental, industrial, and biological applications. Here, we develop a flexible pH sensor using CNT material using aerosol jet technology. The chemiresistive pH sensor is fabricated with a CNT-based miniaturized serpentine sensing element printed on top of the silver electrodes. Aerosol jet printing par...
Conference Paper
Full-text available
Stretchable electronics is gaining wide spread attention due to its application in many applications such as wearable devices, soft robotics, biomedical and consumer products. Aerosol jet printing, which is capable of printing very fine features, can be used to fabricate high performance flexible electronic devices. In this paper, we explore aeroso...
Article
Full-text available
Silver nanoparticle based microelectrodes embedded between layers of hydrogel material were successfully fabricated. 3D bioprinting is employed to print the entire bioelectronics platform comprising of conducting silver ink and Gelatin methacryloyl (GelMA) hydrogel. The additive manufacturing technique of bioprinting gives design freedom for the ci...
Article
Continuous fiber-reinforced polymer (FRP) composites have been used for many applications to create strong yet lightweight products due to their high strength-to-weight and stiffness-to-weight ratios. Aerospace [1], automotive [2], and sport [3]industries are three of the few industries that have been using FRP composites. The increasing need for p...
Article
Full-text available
Additive manufacturing (AM) technique can help reduce time, cost, and complexity of the manufactured parts apart from adding functionality. This work explores AM techniques, namely fused deposition modeling (FDM) and PolyJet printing to fabricate a free-form structure with embedded electrical components. Both additive manufacturing technologies are...
Article
Minute pH changes impact all living organisms, and thus facile pH monitoring in environment and on the cellular level is important. A low cost and flexible carbon nanotube based pH sensor is fabricated in this work using Aerosol jet printing technique. The chemiresistive pH sensor is fabricated with a CNT-based miniaturized serpentine sensing eleme...
Article
Bioelectronics platforms are gaining widespread attention as they provide a template to study the interactions between biological species and electronics. Decoding the effect of the electrical signals on the cells and tissues holds the promise for treating the malignant tissue growth, regenerating organs and engineering new-age medicaldevices.Thiswo...
Article
This paper describes the design, fabrication and characterization of a microchannel-based strain sensor using flexible material. The work explores the use of additive manufacturing, also known as 3D printing, to fabricate the sensor in easy and cost-effective way. It is shown that 3D printing can print complex designs with ease and fabricate object...
Article
Full-text available
Retinal degeneration causes permanent visual loss and affects millions world-wide. Cell transplantation could have the potential in retinal regeneration. However, several problems hindered the successful repair of the retina including cell delivery, integration and survival. Recent studies showed that the use of scaffolds can address these obstacle...
Article
Unmanned aerial vehicles (UAV) are gaining popularity due to their application in military, private and public sector, especially being attractive for fields where human operator is not required. Light-weight UAVs are more desirable as they have better performance in terms of shorter take-off range and longer flight endurance. However, light weight...
Article
Full-text available
Aerosol jet is an additive manufacturing technique that writes electronic inks directly onto the surface. The process has great potential for printed electronics as it is non-contact method that works well with variety of materials- metals, insulators, semiconductors, epoxy and encapsulation materials for conformal writing. This paper explores the...
Article
Tissue engineering approaches have been adopted to address challenges in osteochondral tissue regeneration. Single phase scaffolds, which consist of only one single material throughout the whole structure, have been used extensively in these tissue engineering approaches. However, a single phase scaffold is insufficient in providing all the propert...
Article
Full-text available
Tissue engineering approaches have been adopted to address challenges in osteochondral tissue regeneration. Single phase scaffolds, which consist of only one single material throughout the whole structure, have been used extensively in these tissue engineering approaches. However, a single phase scaffold is insufficient in providing all the propert...
Article
Full-text available
Tissue engineering approaches have been adopted to address challenges in osteochondral tissue regeneration. Single phase scaffolds, which consist of only one single material throughout the whole structure, have been used extensively in these tissue engineering approaches. However, a single phase scaffold is insufficient in providing all the propert...
Conference Paper
Full-text available
Aerosol jet is an additive manufacturing technique that writes electronic inks directly onto the surface. The process has great potential for printed electronics as it is non-contact method that works well with variety of materials-metals, insulators, semiconductors, epoxy and encapsulation materials for conformal writing. This paper explores the e...
Article
Full-text available
Bioprinting, an additive manufacturing technique, has become the cynosure of research and industry world alike. This emerging technology holds the promise of constructing artificial tissues and organs in future. This paper overviews the current state in bioprinting technology, distinguishes between different types of techniques and describes the bi...
Article
Full-text available
This research focuses on exploring low cost and rapid production solutions for fabricating patch antennas for wireless communication applications. Fast and simple additive manufacturing technique is used to print two patch antennas using silver nanoparticle ink on FR4 substrate. Finite element simulation software, HFSS is used to analyze and predic...
Article
This research focuses on exploring low-cost and rapid production solutions for fabricating emitters for patch antennas for wireless communication applications. Additive manufacturing technique is employed to fabricate two patch antennas using silver nanoparticle ink on FR4 substrate. Finite-element simulation software, HFSS is used to analyse and p...
Conference Paper
Full-text available
Free-form electronics is driving the bio-medical industry with specifications such as user customization, cost-effectiveness and short response time. Unification of bio- and electronic materials will open doors for wider applications. Integration of electronic materials for bio-sensing is one such field and had garnered much interest. The paper bri...
Article
Full-text available
Organic inorganic lead halide based perovskites solar cells are by far the highest efficiency solution-processed solar cells, threatening to challenge thin film and polycrystalline silicon ones. Despite the intense research in this area, concerns surrounding the long term stability as well as the toxicity of lead in the archetypal perovskite, CH3NH...
Article
Full-text available
TiO2 hierarchical nanostructures with secondary growth have been successfully synthesized on electrospun nanofibers via surfactant-free hydrothermal route. The effect of hydrothermal reaction time on the secondary nanostructures has been studied. The synthesized nanostructures comprise electrospun nanofibers which are polycrystalline with anatase p...
Article
Full-text available
High yield of three-dimensional (3D) tin oxide (SnO2) sea-urchin nanostructures have been successfully achieved via an economical hydrothermal process without the use of any physical template. The morphology of the synthesized nanostructures can be considered as one-dimensional (1D) nanorods assembled on a 3D core with a relatively high surface are...
Chapter
By manipulating the nanostructures, it is possible to impart new functionalities to material systems. In this chapter we try to combine the advantages of 1D and 3D nanostructures, to achieve superior electron transport along with high surface area. Intrigued by the unique properties of Fe2O3 at nanoscale and its abundance in nature, we demonstrate...
Article
Full-text available
In the present work, electrochemical anodization has been used to prepare uniform TiO{sub 2} nanotube array photoelectrode. The average internal diameter, tube length and wall thickness of the optimized morphology is {approx}180 nm, 14 {mu}m and 10 nm, respectively. It was found that the tube diameter increases with the anodization voltage. Diffrac...
Article
Full-text available
A lot of research on nanomaterials has been carried out in recent years. However, there is still a lack of nanostructures that have a combination of superior properties; both efficient electron transport and high surface area. Here, the authors have tried to develop hybrid α-Fe(2)O(3) flower-like morphology which exhibits both superior electron tra...
Article
Sodium β-alumina (SBA)-based gate dielectric films have been developed for all solution-processed, transparent and low voltage field-effect transistors (FETs). Its high dielectric constant has been ascribed to sodium (Na+) ions in the crystal structure; however, there are no published experimental results concerning the contribution of Na+ ions to...
Conference Paper
Dye sensitized solar cells (DSSC) are attractive because they hold promise for devices that are easy to fabricate and inexpensive. In the present work, highly crystalline mesoporous TiO2 has been synthesized by evaporation induced self assembly (EISA) method using triblock copolymer Pluronic P123 as the organic template. The synthesized TiO2 is ana...
Article
In this work, enhancement of ionic conductivity and long-term stability through the addition of diphenylamine (DPA) in poly(ethylene oxide) (PEO) is demonstrated. Potassium iodide (KI) is adopted as the crystal growth inhibitor, and DPA is used as a charge transport enhancer in the electrolyte. The modified electrolyte is used with titanium dioxide...
Article
A quasi-solid state electrolyte employing a poly(ethylene oxide)/LiI system without a filler is studied. It is optimized for various potassium iodide (KI) concentrations. The electrolyte containing 14.5 wt % of KI exhibits the highest conductivity (3.0 x 10-3 Scm-1). An efficiency of 4.5 % is achieved using this composition of the electrolyte. It i...
Article
Full-text available
GaAs is one of the most important III-V group compound semiconductors for optical, high field and high frequency homo and hetero structure devices. It is widely used because of its high electron mobility feature and band gap compared to Si. The electron drift mobility in Γ conduction band of GaAs has been calculated before as a function of temperat...
Article
Mesophase ordering and structuring are carried out to attain optimized pore morphology, high crystallinity, stable porous framework, and crack-free mesoporous titanium dioxide (TiO(2)) films. The pore structure (quasi-hexagonal and lamellar) can be controlled via the concentration of copolymer, resulting in two different types of micellar packing....
Article
Synthesis of well-organized and highly crystalline mesoporous titania (TiO2) film is demonstrated using triblock copolymer (Pluronic P123) as a structure directing template, through the evaporation induced selfassembly (EISA) process. The issue of thermal and structural stability of a mesoporous TiO2 film was addressed via optimization of annealing...
Article
67 p. In this study, the photoresponse of Si/ SiGe based quantum well infrared photodetector structures was investigated. Two samples of SiGe and other SiGeC quantum well heterostructures were grown. Carbon was incorporated to reduce the strain and to increase the film stability and the bandgap. After processing the responsitivity of the detector w...

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Projects

Projects (8)
Project
We are developing piezoelectric inkjet inks for biomedical applications.
Project
The project is based on the synergistic interdisciplinary collaboration between bioengineering, molecular stem cell biology and clinical research leading to an increased translational understanding of how to counteract muscle loss during immobilization.
Project
The aim of the present project is to aid the recovery of COVID-19 patients admitted to ICU and mitigate the loss of muscle mass and functional status in these patients.