A5045769459- Advanced Sensor and Energy Harvesting Materials
- Dielectric materials and actuators
- Genetics, Aging, and Longevity in Model Organisms
- Tactile and Sensory Interactions
- Conducting polymers and applications
- 3D Printing in Biomedical Research
- Organic Electronics and Photovoltaics
- Spaceflight effects on biology
- Advanced Materials and Mechanics
- Thin-Film Transistor Technologies
- Semiconductor materials and devices
- Sensor Technology and Measurement Systems
- Nanomaterials and Printing Technologies
- Ferroelectric and Piezoelectric Materials
- Nanofabrication and Lithography Techniques
- Transition Metal Oxide Nanomaterials
École Polytechnique Fédérale de Lausanne
2014-2019
École Normale Supérieure - PSL
2014
Flexible high‐voltage thin‐film transistors (HVTFTs) operating at more than 1 kV are integrated with compliant dielectric elastomer actuators (DEA) to create a flexible array of 16 independent actuators. To allow for operation, the HVTFT implements zinc–tin oxide channel, thick stack, and an offset gate. At source–drain bias kV, has 20 µA on‐current gate voltage 30 V. Their electrical characteristics enable switching DEAs which require drive voltages over making control simpler in comparison...
Abstract Studies of the real-time dynamics embryonic development require a gentle embryo handling method, possibility long-term live imaging during complete embryogenesis, as well parallelization providing population’s statistics, while keeping single resolution. We describe an automated approach that fully accomplishes these requirements for embryos Caenorhabditis elegans , one most employed model organisms in biomedical research. developed microfluidic platform which makes use pure passive...
This paper presents the printing of resistive and interdigitated (IDE) capacitive devices for temperature humidity sensing applications, respectively, on biodegradable polylactic acid (PLA) substrates. Inkjet gravure were evaluated to transfer silver-based nanoparticles inks. Flash photonic ink sintering methodologies employed maintain PLA mechanical integrity due its low glass transition (58 °C). Between two techniques investigated, gravure-printed 200 μm-thick sheets shown have better...
This paper shows for the first time fully printed organic electrochemical transistors (OECTs) on flexible foil with an integrated gold gate. gate can be selectively functionalized bio-chemical sensing. The immobilization of antibodies detection Escherchia coli (E. coli) cells is demonstrated herein. Concentrations equal to 10e7 CFU/ml and 10e5 have been detected using OECTs. Innovative claims include: (a) use inkjetprinted electrodes biosensing; (b) selective functionalization antibodies;...
We demonstrate that doping the semiconductor zinc tin oxide (ZTO) with yttrium leads to a high-voltage thin film transistor (HVTFT) enhanced switching performance. Adding 5% an increase in on-off ratio from 40 1000 at operating voltage of 500 V and drop subthreshold swing 65 35 V/dec. The performance is improved because reduction saturation decrease off-current several μA for undoped ZTO HVTFTs 100 nA Y5%ZTO. can be attributed lower trap concentration leading space-charge limited current...
Abstract A high‐voltage flip‐flop combining two self‐powered soft sensors with a flexible thin film transistor (HVTFT) is reported, and used to electrically latch dielectric elastomer actuators (DEAs) in zero high‐strain states. Two touch‐actuated triboelectric generators (TENGs) provide the gate input for HVTFT that drives DEA. One TENG of positive polarity, while other negative thus generating voltages either higher (100 V) or lower (−6 than threshold voltage. Used inverter configuration,...
High-voltage flexible thin-film transistors (HVTFTs) that can operate at an unprecedented 1 kV voltage are developed to drive dielectric elastomer actuators (DEAs), as reported in article number 1700880 by Herbert Shea and co-workers.16 HVTFTs integrated with 16 DEAs, each operating kV, but individually switched using a 30 V gate voltage.Combining DEAs will lead compact, complex, compliant haptics soft robotics.
We report on the integration of a dielectric elastomer actuator (DEA) operating at 1 kV with flexible metal oxide high-voltage thin film transistor (HVTFT). With only 30 V gate voltage, HVTFT controls voltage drop across DEA, thus providing low-voltage control over DEA actuation. Both and are stable up to 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">5</sup> cycles. This integrated DEA+HVTFT actuation strategy represents key building block...