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      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/22c3f6f5849246ed2572a5f6ef2ac2803/alexanderpeter",         
         "tags" : [
            "beamshaping","laser","micromaterialprocessing","myown"
         ],
         
         "intraHash" : "2c3f6f5849246ed2572a5f6ef2ac2803",
         "interHash" : "47883251c01eb299fff8ea03d7195374",
         "label" : "Flexible, compact and picosecond laser capable four-beam interference setup",
         "user" : "alexanderpeter",
         "description" : "",
         "date" : "2020-09-11 12:02:08",
         "changeDate" : "2024-05-14 16:17:33",
         "count" : 3,
         "pub-type": "inproceedings",
         "publisher":"Proceedings of the Lasers in Manufacturing Conference",
         "year": "2017", 
         "url": "", 
         
         "author": [ 
            "Alexander Peter","Volkher Onuseit","Christian Freitag","Sebastian Faas","Thomas Graf"
         ],
         "authors": [
         	
            	{"first" : "Alexander",	"last" : "Peter"},
            	{"first" : "Volkher",	"last" : "Onuseit"},
            	{"first" : "Christian",	"last" : "Freitag"},
            	{"first" : "Sebastian",	"last" : "Faas"},
            	{"first" : "Thomas",	"last" : "Graf"}
         ],
         "abstract": "Periodic micro structures on surfaces offer unique properties, such as hydrophobic behavior, holographic light reflection or friction and wear minimization. Multi-beam interference patterning is a technology to produce micro structures from several micrometers down to below 1 µm, dependent on the wavelength and angle between the interfering beams. A high power capable four-beam interference setup, designed for infrared ultrashort pulsed laser sources in the picosecond regime will be shown. The setup provides independent variation of the period, intensity distribution and pattern size of the interference pattern. The period is variable from 1 µm with a working distance of 100 mm up to 5 µm with a working distance of about 800 mm. The intensity distribution can be modified to different shapes, such as lines, holes, ripples etc. by controlling the polarization of each beam separately. The fluence of the pattern is controllable by changing the pattern size. To change the pattern size, the beam diameter can be varied by a telescope with variable focal length. The setup is built in a stable design of a size of about 300x300x300 mm³ and a weight of 4.6 kg. To avoid aberrations at high laser power, especially focus shift, the setup was designed with high reflective mirrors. An experimental verification shows the comparison between the experimental results and the calculated design and features.",
         "bibtexKey": "Peter.2017.Flexible"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/24421293d6ccb6e409267fe03fa5eee7c/alexanderpeter",         
         "tags" : [
            "BeamShaping","Laser","MicroMaterialProcessing","UltrashortPulse","myown"
         ],
         
         "intraHash" : "4421293d6ccb6e409267fe03fa5eee7c",
         "interHash" : "61677fd5f47bb8487d9b4b64e6ec907b",
         "label" : "Direct Laser Interference Patterning of antibacterial surfaces on stainless steel by means of ultrafast laser",
         "user" : "alexanderpeter",
         "description" : "",
         "date" : "2020-09-11 11:55:57",
         "changeDate" : "2024-05-14 16:17:46",
         "count" : 2,
         "pub-type": "inproceedings",
         "publisher":"Proceedings of the Lasers in Manufacturing Conference",
         "year": "2019", 
         "url": "", 
         
         "author": [ 
            "Alexander Peter","Adrian H A Lutey","Sebastian Faas","Luca Romoli","Onuseit Onuseit","Thomas Graf"
         ],
         "authors": [
         	
            	{"first" : "Alexander",	"last" : "Peter"},
            	{"first" : "Adrian H A",	"last" : "Lutey"},
            	{"first" : "Sebastian",	"last" : "Faas"},
            	{"first" : "Luca",	"last" : "Romoli"},
            	{"first" : "Onuseit",	"last" : "Onuseit"},
            	{"first" : "Thomas",	"last" : "Graf"}
         ],
         "abstract": "Direct Laser Interference Patterning (DLIP) is a laser processing method that provides a tool for creating a wide field of functional surfaces. In the present work, the generation of antibacterial surfaces on stainless steel is shown with a high power capable DLIP setup. The used laser was an ultrafast laser with a wavelength of 1030nm and a pulse duration of eight picoseconds. Two different topographies were produced, which were generated with two different polarization orientation of the laser. Both topographies were investigated in their antibacterial behavior. The employed method for assessing the bacterial retention is based on ISO standards for measurement of antibacterial performance. The resulting topographies shows a retention of up to 99,8% for E. Coli and up to 79.1% for S. aureus bacteria.",
         "bibtexKey": "Peter.2019.Direct"

      }
	  
   ]
}