Thomas Gessner
Fraunhofer Society
Analytical chemistryWaferMaterials scienceElectronic engineeringMicroelectromechanical systems
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Publications 376
#1Geoffrey E. Purdum (Princeton University)H-Index: 10
#2Xiangyu Chen (Cornell University)H-Index: 1
Last. Yueh-Lin LooH-Index: 47
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Controlling hierarchical structural development in organic semiconductors, and across synthetic materials more broadly, is critical to the performance of the material in device applications. Such regulation across multiple scales – from the atomic level to the macroscale – however, is a challenging task given the often-heterogeneous nature of interactions in the processing environment that determines the kinetics and thermodynamics of materials growth. Here, we elucidate factors that govern the ...
1 CitationsSource
#1Geoffrey E. Purdum (Princeton University)H-Index: 10
#2Nicholas Telesz (UK: University of Kentucky)H-Index: 2
Last. Yueh-Lin Loo (Princeton University)H-Index: 47
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Polymorphism is pervasive in molecular solids. While computational predictions of the molecular polymorphic landscape have improved significantly, identifying which polymorphs are preferentially accessed and experimentally stable remains a challenge. We report a framework that correlates short intermolecular contacts with polymorphic stability. The presence of short contacts between neighboring molecules prevents structural rearrangement and stabilizes the packing arrangement, even when the stab...
4 CitationsSource
#1Julia Hann (Chemnitz University of Technology)
#2Christian Helke (Chemnitz University of Technology)H-Index: 1
Last. Thomas Gessner (Chemnitz University of Technology)H-Index: 24
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Abstract DNA origami method aims at the construction of nanometer sized bio-templates from a long single-stranded DNA molecule [1] , [2] . It allows to build a variety of different structures and functionalities arranged with a resolution of about 1 nm for devices like plasmonic antennas or optical waveguides [3] . Our contribution deals with the immobilization of DNA origami templates in well-defined micrometer structures on 6-inch silicon wafers aiming a large-scale fabrication. We present a p...
#1Steffen Hartmann (Chemnitz University of Technology)H-Index: 4
#2Sascha Hermann (Chemnitz University of Technology)H-Index: 11
Last. Bernhard Wunderle (Chemnitz University of Technology)H-Index: 18
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Abstract In this paper we present results of our recent efforts to understand the mechanical interface behaviour of single-walled carbon nanotubes (SWCNTs) embedded in metal matrices. We conducted experimental pull-out tests of SWCNTs embedded in Pd and found maximum forces in the range F ≈ (10 to 65) nN. These values are in good agreement with forces obtained from molecular dynamics simulations taking into account surface functional groups (SFGs) covalently linked to the SWCNT material. The dom...
3 CitationsSource
#1Khaybar Assim (Chemnitz University of Technology)H-Index: 4
#2Janine Jeschke (Chemnitz University of Technology)H-Index: 5
Last. Heinrich Lang (Chemnitz University of Technology)H-Index: 46
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Abstract The synthesis of compounds [Mn( η 5 –C 5 H 4 SiMe 3 )(CO) 3 ] ( 1 ), [Mn( η 5 –C 5 H 3 -1-SiMe 3 -3-Me)(CO) 3 ] ( 2 ), [Mn( η 5 –C 5 H 4 t Bu)(CO) 3 ] ( 3 ), [Mn( η 5 –C 5 Me 5 )(CO) 3 ] ( 4 ) and [Mn( η 5 –C 5 H 7 )(CO) 3 ] ( 5 ) and their potential use as metal-organic chemical vapor deposition (MOCVD) precursors for the deposition of manganese-based layers is reported. The thermal behavior of 1 – 5 was studied by thermogravimetry showing that these compounds evaporate in the temperat...
2 CitationsSource
#1Simon Böttger (Chemnitz University of Technology)H-Index: 3
#2Sascha Hermann (Chemnitz University of Technology)H-Index: 11
Last. Thomas Gessner (Chemnitz University of Technology)H-Index: 24
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For an industrial realization of devices based on single-walled carbon nanotube (SWCNTs) such as field-effect transistors (FETs) it becomes increasingly important to consider technological aspects such as intrinsic device structure, integration process controllability as well as yield. From the perspective of a wafer-level integration technology, the influence of SWCNT length on the performance of short-channel CNT–FETs is demonstrated by means of a statistical and comparative study. Therefore, ...
2 CitationsSource
#1Thomas GessnerH-Index: 24
#2Lutz Hofmann (Fraunhofer Society)H-Index: 8
Last. Stefan SchulzH-Index: 34
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This paper describes selected technologies for the 3D integration of MEMS devices. This comprises a Via Last approach for the formation of MEMS TSVs and a Cu based thermo-compression bonding method for the realization of small 3D-WLP devices. Moreover, the Aerosol Jet technique is discussed as method for the final assembly by means of printing conducting lines over 3D topography.
#1Sascha GeidelH-Index: 1
Last. Victor ParroH-Index: 10
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While there have been huge advances in the field of biosensors during the last decade, their integration into a microfluidic environment avoiding external tubing and pumping is still neglected. Herein, we show a new microfluidic design that integrates multiple reservoirs for reagent storage and single-use electrochemical pumps for time-controlled delivery of the liquids. The cartridge has been tested and validated with a silicon nitride-based photonic biosensor incorporating multiple optical rin...
7 CitationsSource