Category: Nanotech
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Functionalization and higher-order organization of liposomes with DNA nanostructures
Protein display on liposomes Liposomes used in this study were made of 65% 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC), 15% 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE), and 20% 1,2-dioleoyl-sn-glycero-3-phospho-L-serine (DOPS), unless otherwise specified. Liposomes were prepared by dialysis-based detergent removal followed by buoyant density centrifugation (See Supplementary Materials and Methods). Preformed liposomes were mixed with 5’-modified cholesterol-ssDNA (DNA-chol) and incubated at 30 °C for…
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A robust lateral shift free (LSF) electrothermal micromirror with flexible multimorph beams
Design of the robust Al/SiO2-based LSF 2D micromirror A schematic 3D diagram of the robust tip-tilt-piston electrothermal micromirror is shown in Fig. 1a. The mirror plate is suspended by Al/SiO2-based LSF actuators (Fig. 1b) on the four sides. Each actuator has three multimorphs beams and two straight beams. The lengths of the three multimorphs beams…
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Revealing intrinsic domains and fluctuations of moiré magnetism by a wide-field quantum microscope
Before discussing the details of our experimental results, we first present the device structures and our measurement platform as illustrated in Fig. 1a. In this work, we fabricated tDT CrI3 devices by the standard “tear-and-stack” technique and encapsulated them with hexagonal boron nitride (hBN) nanoflakes1,2,3,20,27. Figure 1b shows a prepared tDT CrI3 sample (top) made from an…
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Drug classification with a spectral barcode obtained with a smartphone Raman spectrometer
Smartphone Raman spectrometer and spectral barcode Figure 1 shows schematics of the smartphone Raman spectrometer and spectral barcode; which is the 2D Raman intensity map acquired with the smartphone Raman spectrometer, and an artificial intelligence algorithm embedded in the smart phone for classification. Raman signals are generated and collected by a compact external module integrated with…
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Visualizing the embedded twisted interfaces of two-dimensional materials
Schematics of the atomic structures before and after reconstruction of the twisted bilayer graphene. Credit: Science China Press Vertically stacking two-dimensional (2D) materials to form van der Waals homo- or hetero-structures has become an effective means for regulating their physical and mechanical properties. In particular, when a small twist angle is present at the stacked…
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Ancient art meets nanotechnology in nanoscale goldbeating
The ancient craft of goldbeating enters the nanoscale where gold nanoparticles as tiny as ~18 nanometers are compressed into ultra-thin 2D sheets. Credit: University of South Florida Goldbeating, an age-old craft pioneered by ancient Egyptian artisans more than five millennia ago, involves the meticulous thinning of bulk gold into gossamer-like leaves. Throughout history, this intricate…
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Scientist propose an all-in-one surface design of copper nanowire assemblies to achieve ~100% defrosting efficiency
Through the facile electrochemical method, copper nanowire assemblies were fabricated that combine photothermal, heat-conducting, and superhydrophobic properties to achieve highly efficient de-icing and defrosting. Credit: By Siyan Yang, Qixun Li, Bingang Du, Yushan Ying, Yijun Zeng, Yuankai Jin, Xuezhi Qin, Shouwei Gao, Steven Wang, Zuankai Wang, Rongfu Wen and Xuehu Ma. Scientists at Dalian University…
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Using a quantum device to slow down simulated chemical reaction 100 billion times
Aug 28, 2023 (Nanowerk News) Scientists at the University of Sydney have, for the first time, used a quantum computer to engineer and directly observe a process critical in chemical reactions by slowing it down by a factor of 100 billion times. Joint lead researcher and PhD student, Vanessa Olaya Agudelo, said: “It is by…
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Next Generation Technologies for Semiconductor Failure Analysis Free Live Webinar
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How to Engineer a Reliable $1 Sensor for Safe Drinking Water
Hundreds of thousands of people die from drinking unsafe water every year, according to the World Health Organization. For example, diarrhea transmitted from bacterial contamination is estimated to cause over 500,000 deaths annually. Toxic heavy metals in drinking water, such as arsenic, lead, and mercury, also pose huge health risks. And climate change will only…