SU-8 microneedles based dry electrodes for Electroencephalogram

Stavrinidis, G.; Michelakis, K.; Kontomitrou, V.; Giannakakis, Giorgos; Sevrisarianos, M.; Sevrisarianos, G.; Chaniotakis, Nikos A.; Alifragis, Y.; Konstantinidis, G.

doi:10.1016/j.mee.2016.02.062

Cited by 45 publications

(19 citation statements)

References 5 publications

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“…The underlying nerves are not stimulated enough to trigger pain (45); however, their application in neonates remains to be investigated. These attributes make them less harmful, while exhibiting similar but more stable long term impedance (46) (48), and HSU et al (49). Nevertheless, all these test were done in laboratory settings with limited subject numbers.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Unobtrusive sleep state measurements in preterm infants – A review

Werth

Atallah

Andriessen

et al. 2017

Sleep Medicine Reviews

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Section: Accepted Manuscriptmentioning

confidence: 99%

Unobtrusive sleep state measurements in preterm infants – A review

Werth

Atallah

Andriessen

et al. 2017

Sleep Medicine Reviews

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“…Since then, a wide number of materials have been considered for making dry EEG electrodes [19,20,21,22]. The commercially available g.SAHARA electrodes [9,23] use gold and a similar closely-positioned impedance-converting amplifier approach.…”

Section: Electrode Materials and Chemistrymentioning

confidence: 99%

3D Printed Dry EEG Electrodes

Krachunov

Casson

2016

Sensors

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Electroencephalography (EEG) is a procedure that records brain activity in a non-invasive manner. The cost and size of EEG devices has decreased in recent years, facilitating a growing interest in wearable EEG that can be used out-of-the-lab for a wide range of applications, from epilepsy diagnosis, to stroke rehabilitation, to Brain-Computer Interfaces (BCI). A major obstacle for these emerging applications is the wet electrodes, which are used as part of the EEG setup. These electrodes are attached to the human scalp using a conductive gel, which can be uncomfortable to the subject, causes skin irritation, and some gels have poor long-term stability. A solution to this problem is to use dry electrodes, which do not require conductive gel, but tend to have a higher noise floor. This paper presents a novel methodology for the design and manufacture of such dry electrodes. We manufacture the electrodes using low cost desktop 3D printers and off-the-shelf components for the first time. This allows quick and inexpensive electrode manufacturing and opens the possibility of creating electrodes that are customized for each individual user. Our 3D printed electrodes are compared against standard wet electrodes, and the performance of the proposed electrodes is suitable for BCI applications, despite the presence of additional noise.

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“…For this reason, many studies focus on the coating of MNs with conductive materials represented by Au, Pt, and Ag/AgCl as the WEs, counter electrodes (CEs), and reference electrodes (REs), respectively, in order to enable an MN to function as an electrochemical electrode. In this methodology, metal [ 40 – 46 ], epoxy [ 47 – 49 ], SU-8 [ 50 – 53 ], and polymer [ 53 – 59 ] MNs are coated with metal layers using electroplating or vapor deposition. The covering metal layers are connected to the extract electrodes and the measurement system to conduct the input and output signals.…”

Section: Mns As Sensing Probesmentioning

confidence: 99%

Functionalized microneedles for continuous glucose monitoring

Takeuchi

Kim

2018

Nano Convergence

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Microneedles (MNs) have been established as promising medical devices as they are minimally invasive, cause less pain, and can be utilized for self-administration of drugs by patients. There has been rapid development in MNs for transdermal monitoring and diagnostic systems, following the active research on fabrication methods and applications for drug delivery. In this paper, recent investigations on bio-sensing using MNs are reviewed in terms of the applicability to continuous glucose monitoring system (CGMS), which is one of the main research focuses of medical engineering technologies. The trend of the functionalized MNs can be categorized as follows: (i) as a sensing probe, and (ii) as a biological fluid collector. MNs as in vivo sensors are mainly integrated or coated with conductive materials to have the function as electrodes. MNs as fluid collectors are given a certain geometrical design, such as a hollow and porous structure aided by a capillary action or negative pressure, to extract the interstitial fluids or blood for ex vivo analysis. For realization of CGMS with MNs, a long-term accurate measurement by the MN-based sensing probe or a fluidic connection between the MN-based fluid collector and the existing microfluidic measurement systems should be investigated.

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SU-8 microneedles based dry electrodes for Electroencephalogram

Cited by 45 publications

References 5 publications

Unobtrusive sleep state measurements in preterm infants – A review

Unobtrusive sleep state measurements in preterm infants – A review

3D Printed Dry EEG Electrodes

Functionalized microneedles for continuous glucose monitoring

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