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Printed Biosensor Based on Organic Electrochemical Transistor
Omasta, Lukáš ; Mikula, Milan (oponent) ; Boušek, Jaroslav (oponent) ; Salyk, Ota (vedoucí práce)
Organic electronic devices arise as a suitable solution for bioelectronics sensor development, due to the good biocompatibility of organic semiconductors. So-called biosensors can convert electrochemical processes into an electronic signal. A matrix of such biosensors can simultaneously scan a number of biological samples or tissues of the living systems. The active part of the device is an Organic Electrochemical Transistor (OECT). In this work, the theoretical background on such device and its characterization, application in cell-based biosensors, methods of fabrication together with the current state of the art in the field of organic electronics are discussed. The experimental part contains specific manufacturing procedures of OECT devices development employed. The main emphasis is given on the ability of produced devices to detect response and monitor the stimulation of electrogenic cells. To this end, microplate patterns with a multielectrode array of OECTs based on the semiconductive polymer PEDOT:PSS was developed and fabricated using conventional printing methods (inkjet printing and screen printing). Standard lithographic procedures were also employed. The latest devices with the highest achieved signal amplification of g = 2.5 mS and the time constant of t = 0.15 s were produced. These are comparable or even better than some state of the art fully lithographically prepared ones.
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Materiálový tisk luminiscenčního panelu
Guricová, Patrícia ; Dzik, Petr (oponent) ; Vala, Martin (vedoucí práce)
Práca sa zaoberá prípravou luminiscenčného panelu pomocou sieťotlače, charakterizáciou jednotlivých vrstiev a štúdiom vplyvu zmeny tlačových parametrov na spektrálne vlastnosti panelov. V teoretickej časti sú popísané princípy elektroluminiscencie ako aj metódy prípravy luminiscenčného panelu. Experimentálna časť zahrňuje optimalizáciu parametrov tlače tak, aby bolo dosiahnuté optimálnych parametrov žiarenia. Sú diskutované vlastnosti a hrúbky vrstiev na základe zvolených parametrov tlače. Ďalej je skúmaný vplyv zmeny hrúbky vrstiev aktívneho materiálu a dielektrika na svetelný výkon panelu pri čo najnižšom pracovnom napätí. Výsledkom práce je funkčný elektroluminiscenčný panel a navrhnutý optimalizovaný postup jeho prípravy.
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Printed Biosensor Based on Organic Electrochemical Transistor
Omasta, Lukáš ; Mikula, Milan (oponent) ; Boušek, Jaroslav (oponent) ; Salyk, Ota (vedoucí práce)
Organic electronic devices arise as a suitable solution for bioelectronics sensor development, due to the good biocompatibility of organic semiconductors. So-called biosensors can convert electrochemical processes into an electronic signal. A matrix of such biosensors can simultaneously scan a number of biological samples or tissues of the living systems. The active part of the device is an Organic Electrochemical Transistor (OECT). In this work, the theoretical background on such device and its characterization, application in cell-based biosensors, methods of fabrication together with the current state of the art in the field of organic electronics are discussed. The experimental part contains specific manufacturing procedures of OECT devices development employed. The main emphasis is given on the ability of produced devices to detect response and monitor the stimulation of electrogenic cells. To this end, microplate patterns with a multielectrode array of OECTs based on the semiconductive polymer PEDOT:PSS was developed and fabricated using conventional printing methods (inkjet printing and screen printing). Standard lithographic procedures were also employed. The latest devices with the highest achieved signal amplification of g = 2.5 mS and the time constant of t = 0.15 s were produced. These are comparable or even better than some state of the art fully lithographically prepared ones.
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Materiálový tisk luminiscenčního panelu
Guricová, Patrícia ; Dzik, Petr (oponent) ; Vala, Martin (vedoucí práce)
Práca sa zaoberá prípravou luminiscenčného panelu pomocou sieťotlače, charakterizáciou jednotlivých vrstiev a štúdiom vplyvu zmeny tlačových parametrov na spektrálne vlastnosti panelov. V teoretickej časti sú popísané princípy elektroluminiscencie ako aj metódy prípravy luminiscenčného panelu. Experimentálna časť zahrňuje optimalizáciu parametrov tlače tak, aby bolo dosiahnuté optimálnych parametrov žiarenia. Sú diskutované vlastnosti a hrúbky vrstiev na základe zvolených parametrov tlače. Ďalej je skúmaný vplyv zmeny hrúbky vrstiev aktívneho materiálu a dielektrika na svetelný výkon panelu pri čo najnižšom pracovnom napätí. Výsledkom práce je funkčný elektroluminiscenčný panel a navrhnutý optimalizovaný postup jeho prípravy.
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