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A new mechanical scanner design for a high-speed atomic force microscope (AFM) is presented and discussed in terms of modeling and control. The positioning range of this scanner is 13 mum in the X- and Y-directions and 4.3 mum in the vertical direction. The lowest resonance frequency of this scanner is above 22 kHz. This paper is focused on the vertical direction of the scanner, being the crucial
Jag ser med spänning fram emot när dagens ungdomsgeneration kommer ut på arbetsmarknaden. Ni vet, den generation som får utstå vuxensuckar på grund av fascinationen av självcentrerade selfies-porträtt och mängden ogenomtänkta bilder från vilda tonårsfester.
Robotics in rehabilitation provide considerable opportunities to improve the quality of life for physically disabled people. However, practical results limited, mainly due to the need for developing new robotics concepts where people are where they are working in separeted areas. This paper reveals some of the developments needed and presents two projects currently underway at Lund University. The
Fuel cells, redox flow batteries and some water desalination technologies such as reverse osmosis and electrodialysis require efficient ion exchange membranes to perform in an optimum way. Thus, by enhancing the properties of these membranes there is a possibility to improve this type of applications and technologies. Depending on the specific application, anion or proton exchange membranes with g
Multiplexing efficiency is proposed as a simple and intuitive metric for characterizing multiple antenna systems in the spatial multiplexing mode of operation. Instead of comparing channel capacities of MIMO systems with different antennas, the metric offers valuable insights into the impact of antenna efficiency, efficiency imbalance and correlation on multiplexing performance. It is particularly
This study investigates the role of courses in PhD programmes. It compares five different research groups’ views at the Faculty of Engineering, Lund University, Sweden. The views of supervisors vs. doctoral students are further contrasted.
The gene for beta-microseminoprotein MSMB has been studied by DNA hybridization and molecular cloning techniques. Comparative analysis of restriction endonuclease digests of the cloned gene and of leukocyte DNA strongly suggested that the gene is present in a single copy in the haploid human genome. By Southern blot analysis of DNA from somatic cell hybrids, the gene was assigned to chromosome 10.
This paper presents the use of the localized surface plasmon resonance (LSPR) sensor concept to probe the formation of macroscopic and laterally mobile supported lipid bilayers (SLBs) on SiOx-encapsulated nanohole-containing Au and Ag films. A comparison between Au- and Ag-based sensor templates demonstrates a higher sensitivity for Au-based templates with respect to both bulk and interfacial refr
The article investigates the development of higher degree freemasonry in eighteenth century Sweden and proposes a periodization.
The identification of carotid atheromatous plaques associated to a higher neurologic risk may be important in therapeutic decision making for asymptomatic patients and symptomatic patients with 50%-70% stenosis. The introduction of high-definition ultrasonography (HDU) and computer-assisted image analysis provides the possibility of a standard, objective and detailed characterization of the struct
