Flexible, wearable biosensors for digital health

Flexible and stretchable biosensors have the advantage of enhanced signal validity and patient comfort during physiological signal sensing and biomolecular analysis, crucial for disease diagnosis, treatment and health management. Their lightness, softness and excellent mechanical properties enable effective skin-device interface coupling and...

Creating an antenna band for the myTemp system

This graduation report describes the design process of the antenna band of the myTemp system. The myTemp system is a high accuracy core temperature measuring device, that uses an indigestible measuring pill and an antenna band to measure the temperature inside the intestines. It is mainly used in thermo-physiological or exercise-related research...

Printed Polysilicon on Stretchable Substrate for Strain Sensor Applications

Over the past few years, post-surgery monitoring has become an important aspect of the patient’s healthcare in the modern clinical medicine. This kind of monitoring is done to examine various physical and chemical parameters, while considering any post-surgery complications. Therefore, the patient’s care is continued even after the surgical...

Free standing interconnects for stretchable electronics

Advancements in stretchable electronic systems have changed the way modern electronics interact with their target systems, by their conformability to more complex shapes as compared to conventional rigid or flexible electronics. By utilizing this, limitless applications in the field of healthcare can be realized, such as wearable and implantable...

A stretchable strain sensor for on-the-skin posture monitoring

Everyone has heard it, “sit up straight!” Probably from a mother figure or teacher. Why is bad posture so bad, and what problems does it create?<br/><br/>Bad posture is a prolific problem across the globe. Poor posture is highly linked to interaction with technology. In today’s society, that means nearly everyone is likely to suffer from poor...

A Platform for Mechano(-Electrical) Characterization of Free-Standing Micron-Sized Structures and Interconnects

A device for studying the mechanical and electrical behavior of free-standing micro-fabricated metal structures, subjected to a very large deformation, is presented in this paper. The free-standing structures are intended to serve as interconnects in high-density, highly stretchable electronic circuits. For an easy, damage-free handling and...

Irreversible bonding between PI and PDMS for flexible body patches

Novel Method for Adhesion between PI-PDMS Using Butyl Rubber for Large Area Flexible Body Patches

This paper reports the use of rubber—Polybutadiene as an intermediate adhesive layer for improving the adhesion between polyimide (PI) and silicone polydimethylsiloxane (PDMS) which is required for a reliable fabrication of flexible/stretchable body patches for various applications. The adhesive bond initiated by the butyl rubber (BR), apart...

Ultra-Stretchable Interconnects for High-Density Stretchable Electronics

The exciting field of stretchable electronics (SE) promises numerous novel applications, particularly in-body and medical diagnostics devices. However, future advanced SE miniature devices will require high-density, extremely stretchable interconnects with micron-scale footprints, which calls for proven standardized (complementary metal-oxide...

Substrate Transfer Technology for Stretchable Electronics

This paper focuses on the implementation of a new technique for the fabrication of stretchable electronic patches that can be used for medical applications. The technique is based on the Electronics on Plastics by Laser Release (EPlaR) technology which enables a one-step release of a stack of flexible/stretchable layers incorporating the active...

Interconnect schemes for stretchable array-type microsystems

Flexible systems can be found in many fields such as automotive electronics, computers and peripherals (hard drives, image scanners, ink-jet print-head cables), aerospace, consumer electronics (mobile phones, cameras etc), medical (hearing aids, pacemakers) and many others. Further reduction in size and new properties such as reversible...

Mechanical Characterization of Flexible and Stretchable Electronic Substrates

Conventional IC packages form a rigid shell around silicon IC dies. Their purpose is to provide environmental protection, electrical interconnect and heat dissipation. Despite the fact that majority of current silicon IC?s are realized in a very thin top layer of the silicon substrate (<10µm), the typical thickness of packaged IC dies generally...

Electronics on Flexible and Stretchable Silicon Arrays

Prototyping of a Stretchable Microelectrode Array for Cardiotoxicity Drug Screening

Cardiotoxicity is a common side-effect of drugs and a major cause of late-stage drug rejections, costing the pharmaceutical companies massive amounts of money. A drug is cardiotoxic when it has a negative influence on the heart. Often, it changes the electrophysiological characteristics of the heart, resulting in arrhythmia. This can have...