From nano at chalmers.se Tue Dec 19 16:02:59 2023 From: nano at chalmers.se (Nano) Date: Tue, 19 Dec 2023 15:02:59 +0000 Subject: [Info.aoa-nano] Smalltalks "How much noise is necessary in mesoscopic engines?" Message-ID: SmallTalk [about Nanoscience] On Monday January 22th at 15.00h we welcome you all to our SmallTalks seminar series. You are welcome to join us in lecture hall Kollektorn, MC2 with fika or on zoom. Our speaker is Ludovico Tesser, Doctoral Student, Applied Quantum Physics, Microtechnology and Nanoscience. The seminar is titled "How much noise is necessary in mesoscopic engines" Abstract: Noise plays an important role in the characterization of nanoscale systems because, due to their small size, fluctuations are often comparable with average quantities. In this talk, I will discuss some general properties of noise in coherent mesoscopic conductors. These properties can be formulated as inequalities, setting bounds on the noise. For example, when the device is working as an engine, they result in inequalities between the noise and useful output, e.g. output power. First, I will discuss the main differences between conventional, macroscopic engines and mesoscopic ones. The key distinctions lie in the presence of non-negligible fluctuations and quantum mechanical features. In classical systems, fluctuations play a crucial role in determining the maximum output power in nanoscale engines. This is quantified by the recently developed thermodynamic uncertainty relations [1], which set a constraint on the precision of the engine. However, these uncertainty relations hold no longer in the presence of quantum coherence. Nonetheless, we establish a novel relation between the average charge current flowing in a mesoscopic conductor where quantum coherence is present and its noise [1]. This result sets a minimum amount of noise required to produce power, which complements the thermodynamic uncertainty relation. The seminar is divided into two parts, where the first part consists of a pure overview of the field and is held on a generally accessible level (10 min). The second part will be more technical (15-20 minutes). Looking forward to seeing you live or on Zoom: https://chalmers.zoom.us/j/61929604403 Best regards, Angela, Nils, Christoph, and Janine -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4131 bytes Desc: not available URL: From nano at chalmers.se Fri Dec 22 10:46:29 2023 From: nano at chalmers.se (Nano) Date: Fri, 22 Dec 2023 09:46:29 +0000 Subject: [Info.aoa-nano] Smalltalks "Multiscale X-ray imaging of pharmaceutical dosage forms" Message-ID: SmallTalk [about Nanoscience] On Monday February 2th at 15.00h we welcome you all to our SmallTalk seminar series. You are welcome to join us in lecture hall Kollektorn, MC2 with fika or on zoom. Our speaker is Martina Olsson, Doctoral Student, Materials Physics, Physics. The seminar is titled ??Multiscale X-ray imaging of pharmaceutical dosage forms?. Abstract: X-ray imaging is an indispensable tool in material science, providing insights on the internal structure and properties of materials. With the continued development of synchrotron facilities, the quality of data that can be extracted continues to improve, facilitating nanoscale imaging with enhanced speed and resolution. This SmallTalk presents a correlative X-ray imaging methodology combining ptychographic X-ray computed nanotomography and scanning small and wide-angle X-ray scattering. This approach enables multiscale characterization of materials spanning from the nano to millimeter scale. To showcase the developed methodology, we demonstrate structural analysis of a pharmaceutical dosage form, linking the nanostructure and micron morphology to the processing conditions and properties of the material. The seminar is divided into two parts, where the first part consists of a pure overview of the field and is held on a generally accessible level (10 min). The second part will be more technical (15-20 minutes). Looking forward to seeing you live or on Zoom: https://chalmers.zoom.us/j/61929604403#success Best regards, Angela, Nils, Christoph, and Janine -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 3574 bytes Desc: not available URL: From nano at chalmers.se Fri Dec 22 10:51:06 2023 From: nano at chalmers.se (Nano) Date: Fri, 22 Dec 2023 09:51:06 +0000 Subject: [Info.aoa-nano] Smalltalks "De novo assembly of yeast genomes using optical genome mapping" Message-ID: SmallTalk [about Nanoscience] On Monday February 19th at 15.00h we welcome you all to our SmallTalk seminar series. You are welcome to join us in lecture hall Kollektorn, MC2 with fika or on zoom. Our speaker is Luis Mario Leal Garza, Doctoral Student, Chemical Biology, Life Sciences. The seminar is titled ??De novo assembly of yeast genomes using optical genome mapping?. Abstract: Optical genome mapping (OGM) is a technique that can facilitate genome assemblies and detect structural variations in genomes, overcoming limitations of traditional techniques. In this study, we use a nanofluidic device and competitive binding labeling to stretch and label DNA for its imaging. Computational methods are then used to de novo assemble the genomes of two model yeasts. Our results demonstrate the ability of OGM to extend genome coverage in comparison to traditional genome assemblies. The seminar is divided into two parts, where the first part consists of a pure overview of the field and is held on a generally accessible level (10 min). The second part will be more technical (15-20 minutes). Looking forward to seeing you live or on Zoom: https://chalmers.zoom.us/j/61929604403#success Best regards, Angela, Nils, Christoph, and Janine -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 3268 bytes Desc: not available URL: From nano at chalmers.se Fri Dec 22 10:55:20 2023 From: nano at chalmers.se (Nano) Date: Fri, 22 Dec 2023 09:55:20 +0000 Subject: [Info.aoa-nano] Smalltalks "Controlling fluid flow direction in microfluidic systems through photothermal effects" Message-ID: SmallTalk [about Nanoscience] On Monday March 4th at 15.00h we welcome you all to our SmallTalk seminar series. You are welcome to join us in lecture hall Kollektorn, MC2 with fika or on zoom. Our speaker is Pantea Dara, Doctoral Student, Nano and Biophysics, Physics. The seminar is titled ??Controlling fluid flow direction in microfluidic systems through photothermal effects?. Abstract: In microfluidic environments, the transport of particles is typically governed by slow diffusion near interfaces. However, the introduction of localized fluid flow allows for active transport of suspended nano-objects within confined spaces. To achieve precise and dynamic control over fluid flow at the microscale, a promising approach is to harness photothermal effects by illuminating metallic or all-dielectric nanostructures. Previous research has demonstrated the induction of strong flow transients, with flow speeds reaching millimeters per second, when microscopic vapor bubbles nucleate on spatially isolated laser-heated plasmonic nanoantennas supported on a substrate. Nevertheless, in such structures, the flow pattern is cylindrically symmetric and always directed toward the nanoantenna at the substrate plane, limiting its applicability in, for example, particle manipulation schemes. In this context, we investigate the potential to manipulate the flow direction by adjusting the absorption characteristics of these metallic or dielectric nanostructures. Our research has shown that the flow direction can be locally reversed by breaking the photothermal symmetry using two nearby nanoantennas that differ either in size or polarization response. The in-plane flow transient is strong enough to push microparticles tens of microns across a surface. Directional flow control may offer a means for rapid and precise mass transport near surfaces, with applications in microfluidics, bionanotechnology, and particle sorting.The seminar is divided into two parts, where the first part consists of a pure overview of the field and is held on a generally accessible level (10 min). The second part will be more technical (15-20 minutes). Looking forward to seeing you live or on Zoom: https://chalmers.zoom.us/j/61929604403#success Best regards, Angela, Nils, Christoph, and Janine -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4390 bytes Desc: not available URL: From nano at chalmers.se Fri Dec 22 11:10:45 2023 From: nano at chalmers.se (Nano) Date: Fri, 22 Dec 2023 10:10:45 +0000 Subject: [Info.aoa-nano] Smalltalks "A journey beyond limits: molecular engineering towards increased spatial resolution" Message-ID: SmallTalk [about Nanoscience] On Monday March 18th at 15.00h we welcome you all to our SmallTalk seminar series. You are welcome to join us in lecture hall Kollektorn, MC2 with fika or on zoom. Our speaker is Carlos Benitez Martin, Visiting Researcher, Chemistry and Biochemistry, Chemistry and Chemical Engineering. The seminar is titled ??A journey beyond limits: molecular engineering towards increased spatial resolution?. Abstract: It comes with no doubts that light is essential, as it provides access to the majority of the findings that eventually build our knowledge. Among the wide variety of applications where this statement applies, this talk will focus on the biological field: the non-invasive nature of light in combination with fluorescent molecular tools constitutes a valuable means to study, for instances, the development of complex biological processes. Although an improved resolution translates into better observations and more accurate conclusions, this requires in most of the cases of changes in the detection technique and/or the instrument. Is there a way to overcome this limitation while using the same technique and/or instrument? "If you cannot change the engine, try changing the fuel."The seminar is divided into two parts, where the first part consists of a pure overview of the field and is held on a generally accessible level (10 min). The second part will be more technical (15-20 minutes). Looking forward to seeing you live or on Zoom: https://chalmers.zoom.us/j/61929604403 Best regards, Angela, Nils, Christoph, and Janine -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 3631 bytes Desc: not available URL: From nano at chalmers.se Fri Dec 22 11:18:21 2023 From: nano at chalmers.se (Nano) Date: Fri, 22 Dec 2023 10:18:21 +0000 Subject: [Info.aoa-nano] Smalltalks "Exploring aluminium nitride for optomechanics" Message-ID: SmallTalk [about Nanoscience] On Monday April 29th at 15.00h we welcome you all to our SmallTalk seminar series. You are welcome to join us in lecture hall Kollektorn, MC2 with fika or on zoom. Our speaker is Anastasiia Ciers, Postdoc, Quantum Technology, Microtechnology and Nanoscience. The seminar is titled "Exploring aluminium nitride for optomechanics". Abstract: To isolate its motion from disturbance from the environment, a resonator must have an ultrahigh mechanical quality factor, Q, and high mechanical frequency, f. By taking advantage of strain engineering, quality factors up to 10 billion can be reached in crystalline silicon resonators. Crystalline materials provide lower density of defects, enabling higher mechanical quality factors and new functionality compared to amourphous materials. A wide bandgap aluminium nitride grown on silicon has a high lattice mismatch providing a high quality mechanical factor and relatively high piezoelectricity coefficient. We demonstrate resonator designs with ultrahigh mechanical quality factors and reach Qf products above 1012. These are the first ultrahigh-Q resonators that feature piezoelectricity and we expect that they can be used in quantum optomechanical systems. The seminar is divided into two parts, where the first part consists of a pure overview of the field and is held on a generally accessible level (10 min). The second part will be more technical (15-20 minutes). Looking forward to seeing you live or on Zoom: https://chalmers.zoom.us/j/61929604403 Best regards, Angela, Nils, Christoph, and Janine -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 3605 bytes Desc: not available URL: From nano at chalmers.se Fri Dec 22 11:22:31 2023 From: nano at chalmers.se (Nano) Date: Fri, 22 Dec 2023 10:22:31 +0000 Subject: [Info.aoa-nano] Smalltalks "Self-assembly of two-dimensional nanomaterials" Message-ID: SmallTalk [about Nanoscience] On Monday May 13th at 15.00h we welcome you all to our SmallTalk seminar series. You are welcome to join us in lecture hall Kollektorn, MC2 with fika or on zoom. Our speaker is Ruiqi Chen, Doctoral Student, Materials and Manufacture, Industrial and Materials Science. The seminar is titled ?Self-assembly of two-dimensional nanomaterials??. Abstract: Two-dimensional materials (2DMs) are ultrathin nanomaterials with unique characteristics such as high surface-to-volume ratio, surface charge, shape, high degree of anisotropicity, and adjustable chemical functionality. In the last decade, 2DMs such as graphene, transition metal dichalcogenides, 2D transition metal carbides and nitrides (MXenes) have drawn significant attention, being considered as promising materials with the potential to change the world in many applications, for example, energy storage devices, semiconductors, sensors, etc. To utilize them to fabricate practical and macroscopic devices on a large scale, there is a complementary need to controllably assemble these 2D building blocks into more sophisticated and hierarchical three-dimensional (3D) architectures. In this talk, I will firstly introduce the most popular ways (e.g., template-assisted methods) to create3D structures, for example, sophisticated and beautiful flower-like structures, 3D network structures, hollow spherical structures, by self-assembling 2D nanomaterials. I will also tell you why 3D assembling structures are needed. In the end, I will share with you a story about how we developed an innovative method to self-assemble 2D materials (graphene and MXene) into 3D hollow spheres and their outstanding performance for energy storage. Our method is very simple and can be scaled up for large-scale synthesis with great potential for practical applications. The seminar is divided into two parts, where the first part consists of a pure overview of the field and is held on a generally accessible level (10 min). The second part will be more technical (15-20 minutes). Looking forward to seeing you live or on Zoom: https://chalmers.zoom.us/j/61929604403 Best regards, Angela, Nils, Christoph, and Janine -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 4260 bytes Desc: not available URL: From nano at chalmers.se Fri Dec 22 11:26:12 2023 From: nano at chalmers.se (Nano) Date: Fri, 22 Dec 2023 10:26:12 +0000 Subject: [Info.aoa-nano] Smalltalks "Heteroleptic coordination cages for tailored nanoconfinement" Message-ID: SmallTalk [about Nanoscience] On Monday May 27th at 15.00h we welcome you all to our SmallTalk seminar series. You are welcome to join us in lecture hall Kollektorn, MC2 with fika or on zoom. Our speaker is Ebba Matic, Doctoral Student, Chemistry and Biochemistry, Chemistry and Chemical Engineering. The seminar is titled ?Heteroleptic coordination cages for tailored nanoconfinement??. Abstract: Coordination cages are 3-dimensional molecular boxes with metal ions in the corners bridged by organic ligands. In the center of the coordination cage there is a nanoscale hollow cavity that is very useful in many different applications. When confined in small spaces the properties of molecules change, they can become more reactive, or conversely be protected. Coordination cages have also been used for separation of molecules and detection of molecules. One problem with conventional coordination cages, is the highly symmetric cavity. To ensure good selectivity in the encapsulation the target guest molecule should fit in the cage like a key in a lock. In my work I develop novel heteroleptic coordination cages to use for separations. The seminar is divided into two parts, where the first part consists of a pure overview of the field and is held on a generally accessible level (10 min). The second part will be more technical (15-20 minutes). Looking forward to seeing you live or on Zoom: https://chalmers.zoom.us/j/61929604403 Best regards, Angela, Nils, Christoph, and Janine -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/calendar Size: 3520 bytes Desc: not available URL: