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In this work we present a device able to electroporate and deliver molecules inside adherent cells using hollow nanoelectrodes that act also as nanofluidic channels. Our fabrication approach allows to greatly reduce the amplitude of the applied electrical pulse train and to selectively deliver molecules only to the targeted cells.
In natural environments commonly appear periodic micro- and nano-structures exhibiting macroscopic properties different from the ones on the single elements. Typical examples are butterfly wings in optics, lotus leaves in fluidics or complex 3D neuronal networks in neuroscience and biology. Within this context, mimicking the intrinsic regularity exhibited by natural architectures can lead to unprecedented...
In the study of neuronal networks or other cell cultures it is essential to combine information about a single element with the connections developed throughout the whole system. Those data come from different space and time scales, therefore requiring the employment of various techniques to be acquired and combined. Unfortunately, connecting data from more than one experiment is often challenging...
InAlN/GaN is indeed an alternative to the common AlGaN/GaN heterostructure in electronics and sensing. It enables operation at extremely high temperature once problems with contact metallization and passivation have been solved. It is the only heterostructure known presently, which allows overgrowth of high quality diamond films to combine two of the most stable semiconductors. Thus, applications...
We report on the development of a diamond-on-sapphire microelectrode quadrupole array, substituting the commonly used inert metal electrode material by nanocrystalline diamond (NCD). This allows to combine the transparency (desired for fluorescence analysis) with the properties of an inert quasi-metallically doped diamond electrode. The NCD film was nucleated by BEN (Bias Enhanced Nucleation) on double...
The use of high quality diamond overlayers as heat sink has been studie d extensively in the past two decade s for high power devices. The outstanding diamond thermal conductivity would indeed enable to extract the extremely high power density of GaN-based devices, whose operation is often limited to pulse mode to prevent excessive device overheating.
The development of diamond overlayers with high crystalline quality for high power devices in Si, GaAs or GaN, aimed at heat extraction from the top, has been a quest for many years. Recently CMOS circuits have been coated by untra-nano-crystalline-diamond (UNCD) grown at 350 C, however with low thermal conductivity due to a substantial graphitic grain boundary content [1]. Usual growth conditions...
In this paper, a compressively stressed nanocrystalline diamond (NCD) actuator utilizing a thermal actuation scheme is presented. The growth chemistry of NCD films along with the mechanical properties of diamond are discussed in detail. Stress engineering is performed to realize compressively stressed diamond films for RF-MEMS applications. A NCD based bi-stable actuator is designed and fabricated...
This paper presents a thermally actuated nanocrystalline diamond micro-bridge for RF and high power applications. The diamond bridges are integrated on a CPW transmission line and small signal measurements of the actuator working as a switch are presented. The bridges are actuated at 2 volts drawing a current of 30mA. Tunable inductors with an inductance ratio of 2.2 at 30 GHz are also presented....
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