Vladan KoncarEcole National Supérieure des Arts et Industries Textiles · GEMTEX
Vladan Koncar
PhD, DrHC
About
286
Publications
100,820
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
4,541
Citations
Additional affiliations
September 2020 - May 2021
January 2010 - May 2021
Ecole Nationale Supérieure des Arts et Industries Textiles
Position
- Professor (Full)
September 2009 - September 2015
GEMTEX research laboratory
Position
- Managing Director
Description
- Director of GEMTEX and Head of Research at ENSAIT
Publications
Publications (286)
The development of textile-based strain sensors signifies a new era for diverse e-textile applications spanning various fields, including health monitoring and sensing equipment. Over decades, the sensor field has experienced significant advancements, incorporating enhancements in sensing accuracy, resolution, measurement range, and robustness, amo...
This study presents the development and evaluation of an innovative intelligent garment system, incorporating 3D knitted silver biopotential electrodes, designed for long-term sports monitoring. By integrating advanced textile engineering with wearable monitoring technologies, we introduce a novel approach to real-time physiological signal acquisit...
Background
Ventricular arrhythmia in hypertrophic cardiomyopathy (HCM) relates to adverse structural change and genetic status. Cardiovascular magnetic resonance (CMR)–guided electrocardiographic imaging (ECGI) noninvasively maps cardiac structural and electrophysiological (EP) properties.
Objectives
The purpose of this study was to establish whet...
Background
Electrocardiographic imaging (ECGI) generates electrophysiological (EP) biomarkers while cardiovascular magnetic resonance (CMR) imaging provides data about myocardial structure, function and tissue substrate. Combining this information in one examination is desirable but requires an affordable, reusable, and high-throughput solution. We...
INTRODUCTION: In hypertrophic cardiomyopathy (HCM), ventricular arrhythmia associates with severity of LVH and scar, and presence vs absence of a sarcomeric gene mutation (G+LVH+ vs G-LVH+). Also, ECG changes in subclinical HCM (G+LVH-) signal increased risk of phenotype progression.
HYPOTHESES: ECG Imaging (ECGI) can detect: i) subtle electrophysi...
A porous electrospun thermoplastic polyurethane (TPU) membrane was designed, fabricated, and functionalized to become a highly sensitive airflow sensor. It is composed of a permeable electrospun nanofibrous structure able to detect and measure low-speed airflow using piezoresistive phenomenon. Our sensory membrane’s SEM images confirmed uniform, ho...
All dyers share the common goal of achieving the correct shade as early as the first dyeing. But the dyeing process is very complex, being characterised by the diffusioncontrolled sorption of dyes that depends on several physicochemical parameters. Moreover, the dyeing properties relating to microfibres and conventional fibres are caused by differe...
An original fully textile combiner is proposed to power supply sensors close to a body with only one centralized source of energy like a smartphone, for instance. A solution is provided for taking into account the requirements of an industrial production process that need to minimize needle movements during an embroidery process. Moreover, the pape...
Recently, air pollution attracted many worries because of its high number of deaths per year. To solve the problem, the industries are trying to fabricate the giant air filtration system for public areas. However, the clogging of air filters should be detected in real-time to change or clean them. E-textile is a very fascinating field, which is oft...
Bioelectric signals are significant indicators of the state of health of the human body, especially in sports monitoring, where athletes’ fatigue state and performance need to be monitored in real-time to develop a proper training plan. Due to the characteristics of sports, it is difficult to obtain the dynamic bioelectrical signals of the human bo...
Currently, nanofibers have received attention due to their properties, such as high porosity, high aspect ratio, and lightweight. The most inexpensive and high-efficiency method to produce nanofibers is electrospinningElectrospinning, which includes single, or multi-jet and core/shell approaches. The structures and diameter of nanofibers depend on...
These days, nanofibers are used in the medical sector, such as drug delivery and wound dressing structures, because of their excellent characteristics, high permeability, and important surface area. Natural and synthetic polymers may be electrospun in the form of a blend. Besides, the antibiotics such as linezolid, enrofloxacin, and vancomycin are...
In this study, the poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) conductive dry films were observed in terms of their thicknesses versus electrical resistances measured and related electrical resistivities calculated. The evolution of their electrical resistances was monitored in 75 days. Three groups of sensor yarns were studied also whe...
Under dynamic wear conditions, moisture management and heat transfer behaviour of clothing between the human body and its environment are very important attributes for comfort and performance. Especially considering heavy works like firefighting, it is important to analyse liquid moisture management and thermal comfort properties of fabrics that in...
The Internet of Things (IoT) is considered a promising realm of innovation and revenue generation for the forthcoming years, revolutionizing the way we interact with objects, other people and the world. With an unprecedented but realistic target of trillions of interconnected devices, the IoT calls for technological innovations that lie in the hear...
In this chapter, novel light-emitting fabrics (LEF) realized by the weaving process are presented. These LEFs may be used in various applications such as light flexible panels for signalization or advertising, flexible displays for car dashboards, dynamic light-emitting flags, fashion, etc. However, one of the most promising and important applicati...
E-textiles is a new hybrid field developed with the help of the integration of electronic components into our daily usage of textile products. These wearable e-textiles provide user-defined applications as well as normal textile clothing. The medical field is one of the major leading areas where these new hybrid products are being implemented, and...
The development of specific user-based wearable smart textiles is gaining interest. The reliability and washability of e-textiles, especially electronic-based components of e-textiles, are under particular investigation nowadays. This is because e-textiles cannot be washed like normal textile products and washing electronic products is not common p...
Smart and e-textiles have nowadays an important increasing place in the garment industry. The rise of embedded telecommunications, especially smartphones in our pocket, enables us to provide a power source and a wireless link for smart textiles. The main issue is to develop garments able to receive power from smartphones and communicate with them w...
E-textiles reveal a new and hybrid sector of the industry that is created by the integration of electronic components or textile-based electronics in our daily life textile products. They are facing problems in terms of washability, reliability, and user acceptance. This manuscript explains the mechanical stresses acting during the washing process...
This paper presents the production and the characterization of the multi-walled carbon nanotube (MWCNT) printed flexible temperature sensors for high-precision reading in temperature sensing applications. The temperature sensor was fabricated using the inkjet printing method by depositing carbon nanotube (CNT) ink on soft taffeta fabric. An aqueous...
The paper examines the washing behavior of fabric by using the finite element method (FEM) along with the Coupled Eulerian–Lagrangian (CEL) approach. Many prototypes of e-textiles with different functions have been developed for various applications in laboratories worldwide, but only a limited number of products exist on the market. The washing pr...
The textile-based electrochromic (EC) display which has been developed and presented in this article, is very compact, robust, flexible, stable, efficient, economical, and inclined to biocompatibility. The developed textile display is having only three-layer over conventional seven layers patented electrochromic structures. It is also very efficien...
(1) Background: millions of people, from children to the elderly, suffer from bladder dysfunctions all over the world. Monitoring bladder fullness with appropriate miniaturized textile devices can improve, significantly, their daily life quality, or even cure them. Amongst the existing bladder sensing technologies, bioimpedance spectroscopy seems t...
Around 15% of children still wet their bed after five years old. Although bedwetting alarms have proven to be effective to achieve nighttime dryness, they are cumbersome so children could be reluctant to use them. Therefore, the moisture sensor and wire were made unobtrusive by seamlessly integrated them into fully textile underwear by using conduc...
Smart textiles, incorporating physiological sensors, are paving the way for remote and personalized healthcare. Indeed, their wearable sensors enable continuous and non-invasive monitoring of vital signs, such as an electrocardiogram (ECG), during patients' daily life without discomfort. Until now, most of the textile electrodes reported are ECG se...
In this study, the loss of the silver content was determined accurately when silver plated nylon electrodes dedicated to a measurement of human physiological parameters are washed with detergents containing bleaching agents. Thermogravimetric analysis and morphological observations based on SEM images have been conducted to determine the quantity o...
E-textile, as a growing field in the current era, gained a lot of attention and currently, some tremendous outcomes of these fields can be seen. They are being used in specific functional requirements depending on application types in various fields including medicals, military, safety and leisure, etc. E-textile structures can contain various elem...
Although market prediction for smart textiles in the coming years is high, their washability will be among the main criteria for their mass adoption. Hence, the need to understand precisely how the washing process can damage them. Therefore, the best care instructions can be determined and serve as guidelines for smart textile manufacturers to cont...
This review summarizes the recent developments and importance of wearable electronic textiles in the past decade. Wearable electronic textiles are an emerging interdisciplinary research area that requires new design approaches. This challenging interdisciplinary research field brings together specialists in electronics, information technology, micr...
Reliability and washability are major hurdles facing the e-textile industry nowadays. The main fear behind the product’s rejection is the inability to ensure its projected life span. The durability of e-textiles is based on an approximate lifetime of both the electronics and textiles integrated into the product. A detailed analysis of the wash proc...
E-textiles; new emerging hybrid systems and devices require novel standards regarding their reliability and durability in order to gain the attraction and satisfaction for the customers and market readiness. Launderability of e-textiles is one of the key problems for their reliability and maintenance. Standards should fulfill the requirements for b...
E-textile is one of the emerging fields of current era and some dynamic and state of the art products are already available on the market. E-textile products are facing problems related to reliability and difficulty in laundering. This paper is focused on the standards to be proposed for washability of e-textile structures after in depth analysis o...
The washability issue is always a challenge for electronic textiles in terms of application. It reduces their reliability, makes them not robust enough, and therefore not ready for the market. In this study, a novel protocol was designed to test the performance of conductive threads under wet situation in order to simulate the washing cycle. In thi...
Cardiovascular diseases are the leading cause of lethal issues worldwide. The most effective way to combat these diseases is the real-time monitoring of the electrocardiogram (ECG) that reflects the electrical signals generated by the heart cells. So far, the ECG is recorded by using the cutaneous conventional medical electrodes (Ag/AgCl). These el...
Washing process is an important issue for e-textiles and smart textile structures. In the washing process, textile fabrics are exposed to mechanical stresses, chemical reactions, thermal stress, and temperature. These stresses cause damage on conductive yarns and accordingly electronic contacts in the wearable device. Modeling the damage during was...
A split ring resonator (SRR) antenna integrated in textile by embroidery is reported. The antenna was designed and produced by targeting two goals. First, a size reduction of the antenna was achieved by means of an SRR. Secondly, the connection loss was reduced by using a copper wire dipole fixed by embroidery. On the basis of numerical simulations...
The improvement of human health condition is an important objective that remains relevant since the origin of human being. Currently, cardiovascular diseases are the first cause of death worldwide. For this reason, permanent real-time monitoring of heart activity (Electrocardiogram: ECG), its analysis and alerting of concerned person is a solution...
Smart textile structures such as sensor yarns provide real possibility for in situ structural health monitoring of textile reinforced thermoplastic composites. In this work thermal properties of E-glass/polypropylene (GF/PP) and E-glass/poly(N,N’-hexamethylene adipamide) (GF/PA66) sensor yarns based on conductive polymer complex [3,4(ethylenedioxy)...
A development of washable PEDOT:PSS (poly(3,4-ethylenedioxythiophene) polystyrene sulfonate) polyamide textile-based electrodes is an interesting alternative to the traditional Ag/AgCl disposable electrodes, usually used in clinical practice, helping to improve medical assessment and treatment before apparition or progress of patients' cardiovascul...
Smart textile structures are promising solution nowadays for in situ structural health monitoring of composite parts that have important place in transportation industry. Composites made from a polymeric matrix and a fibrous reinforcement have been increasingly studied during the last decade. Conductive yarns as textile sensors can be integrated in...
Seam strength has a huge impact on the durability of the garment. Conductive yarn usage in a stitching while development the e-textile structures is often used to connect electronic modules to sensors and actuators. Most common conductive yarn, used for the joining of e-textile products, is silver coated polyamide yarn. In this standpoint, chosen w...
Optimal comfort will enable the wearer to work efficiently over long periods of time and help to protect the body from imminent overheating. The thermal performance of fire fighters' protective clothing is primarily based on the thermophysical properties of the materials that are used to construct the clothing. In this study, we have used new fire...
The drive for integration of electronic components into textile substrates has been a major aspect of research into production of smart textiles. Electronic components as such, are rigid, inflexible, do not easily follow body movements and can cause hypersensitivity of the skin upon prolonged contact due either to the presence of irritants or the r...
Even if smart textiles gained a certain level of maturity, they are not yet ready for the market at large scale. The main issues explaining this are related to problems of reliability and difficulties to launder smart textile structures. Smart textiles are also facing problems for launching in market due to lack of standardizations. This paper is f...
Smart Textiles for in situ Monitoring of Composites proposes a 'smart textile' approach to help solve the problem of real-time monitoring of the structural health of composites. The book combines textiles, composites and structural health monitoring knowledge to present an integrated approach to the deployment of smart textiles to monitor failure m...
Long-term monitoring of the electrical activity of the heart helps to detect the presence of potential dysfunctions, enabling the diagnosis of a wide range of cardiac pathologies. However, standard electrodes used for electrocardiogram (ECG) acquisition are not fully integrated into garments, and generally need to be used with a gel to improve cont...
Smart textiles are fabrics able to sense external conditions or stimuli, to respond and adapt behaviour to them in an intelligent way and present a challenge in several fields today such as health, sport, automotive and aerospace. Electrically conductive textiles include conductive fibres, yarns, fabrics, and final products made from them. Often th...
Textile metamaterials produced by a weaving of metallic and dielectric yarns are considered for filtering operations in the submillimeter band. A woven metamaterial was designed by parametric simulations aimed at producing a high-pass filter with a cutoff frequency at around 500 GHz above a high reflective band and a strong rejection. The woven met...
A medical quality electrocardiogram (ECG) signal is necessary for permanent monitoring, and an accurate heart examination can be obtained from instrumented underwear only if it is equipped with high-quality, flexible, textile-based electrodes guaranteeing low contact resistance with the skin. The main objective of this article is to develop reliabl...
The miniaturized, polydimethylsiloxane (PDMS) encapsulated, reliable, and fully washable system composed of three textile stretchable electrodes and connected electronic module is designed, realized, and integrated to a sportswear. The electronic module is specifically developed and made on a flexible print circuit board in order to facilitate its...
Many metallic structural and non-structural parts used in the transportation industry can be replaced by textile-reinforced composites. Composites made from a polymeric matrix and fibrous reinforcement have been increasingly studied during the last decade. On the other hand, the fast development of smart textile structures seems to be a very promis...
The presented work investigates changes in electrical resistance of embedded sensory yarns as a method to monitor the resin flow front position and curing degree of resin during manufacturing of composite structures by vacuum infusion technology. The sensor concept is based on Piezo-resistive sensors integrated to the flax fabric, having almost ide...
This study deals with the development of a large woven metamaterial surface for applications in the submillimeter frequency band. Before weaving, design of the metamaterial textile is investigated to obtain a phase-advance near 500 GHz. Then, a large sample is produced by semi-industrial machine and characterized in terms of dimensional homogeneity...
The final geometry of 3D warp interlock fabric needs to be check during the 3D forming step to ensure the right locations of warp and weft yarns inside the final structure. Thus, a new monitoring approach has been proposed based on sensor yarns located in the fabric thickness. To ensure the accuracy of measurements, the observation of the surface d...
Recently significant activities have been focused on the research of human identification and tracking systems in different environments. In this context, this article describes a novel design and construction methodology for a low-cost intelligent carpet system for footstep detection. The carpet consists of activated carbon nonwoven material sandw...
A successful photodynamic therapy (PDT) requires a specific photosensitizer, oxygen and light of a specific wavelength and power. Today photodynamic therapy (PDT) is administered to patients with light-emitting diode (LED) panels. These panels deliver a non-uniform light distribution on the human body parts, as the complex human anatomy is not a fl...