📰 "A Plasma-Based Approach for High-Power Tunable Microwave Varactors"
https://arxiv.org/abs/2404.18068 #Physics.Plasm-Ph
#Pressure #Cell
A Plasma-Based Approach for High-Power Tunable Microwave Varactors
This work presents a tunable varactor with tunability in the range of 100s of MHz and a capacitance delta of about 36 pF by employing a perpendicular magnetic field to a capacitively-coupled (CCP) RF plasma cell. A comprehensive high-frequency circuit model for the fabricated varactor is proposed and verified experimentally for a plasma electron number density of $2.95\times10^{17}m^{-3}$ which has a tunability of 146 MHz with a magnetic flux density ranging from 0 to 246 milliTesla. Under a pressure of 64 milliTorrs, the Argon ccp was found to have a variable capacitance ranging from 4 pF to 41.72 pF.
Tonight in the Breville Fast Slow Pro — a Cloverdale quarter teardrop ham
#cooking #ham #pressure #breville #meat
A surface morphology-based inference method for the cell wall elasticity profile in tip-growing cells
Author summary Tip-growing cells can be characterized by their fast growth concentrated at the cell’s apex. Their growth and morphogenesis are tightly regulated processes involving cell wall addition and rearrangement while the cell wall is under stress originating from the cell’s internal turgor pressure. We start by studying the cell wall’s elastic properties, one aspect of the cell growth process. We use a method of marker point tracking across the surface of the tip-growing cell to measure the wall’s elasticity profile. In this work, we present a parameter sensitivity study of this method on synthetic cells and report our results on experimental moss tip-growing cells. Our results suggest that this inference method can reliably measure a cell wall elasticity gradient under combined geometric and mechanical conditions that create elastic strains within 5% at the tip.
📰 "Self-Assembled Telecom Color Centers in Silicon and Their Growth Environment"
https://arxiv.org/abs/2604.06766 #Cond-Mat.Mes-Hall
#Physics.Optics
#Pressure #Matrix
Self-Assembled Telecom Color Centers in Silicon and Their Growth Environment
Artificial atoms based on color centers in silicon (SiCCs) have recently emerged as promising candidates for highly integrable and scalable key components in photonic quantum technology, including telecom single-photon sources and spin memory devices. A novel all-epitaxial fabrication technique for SiCCs, based on ultra-low-temperature (ULT) molecular beam epitaxy (MBE), addresses limitations of conventional fabrication via ion implantation, such as vertical ion straggle and collateral crystal lattice damage. This method solely relies on self-assembly of SiCCs during kinetically-limited growth of (carbon-doped) Si(:C) at ULTs <~350°C. The latter requires an extraordinary pristine growth environment to prevent unintended defect formation caused by the incorporation of impurities from the background vapor; however, so far, no study has specifically addressed how exactly the vacuum conditions during epitaxy influence SiCC formation, their optical properties, and the quality of the surrounding crystal matrix. Here, we investigate the impact of the growth pressure and the substrate temperature on the self-assembly and photoluminescence (PL) properties of important SiCCs, such as W, G, G', and T centers. Further, we use PL and Doppler broadening variable energy positron annihilation spectroscopy to emphasize the role of the growth pressure in suppressing the luminescence background, which is crucial for advancing quantum photonics applications.
Osmotic pressure gradients in E. coli biofilms revealed by in-situ sensors
Osmotic pressure has been known to play essential roles in living systems from single cells to complex tissues. However, direct in-situ measurements of osmotic pressures in biosystems have remained challenging, especially in complicated heterogeneous systems in which osmotic pressure gradients could exist and induce directed forces. Bacterial biofilms –– organized communities of bacteria encased in a self-produced extracellular matrix –– are a major mode of bacterial life. It has, however, remained unexplored how the osmotic pressure is distributed in the biofilm and how this distribution contributes to biofilm growth and activity. Here, liposomal nano-sensors are developed for the in-situ mapping of osmotic pressures at an unprecedented microscale resolution in real time using Escherichia coli. biofilm as a model system that develops at the surface of a hydrogel containing the nutrients. The measurements reveal osmotic pressure gradients with a radially increasing trend from the inner regions to the outer regions of the biofilm, which is associated with biofilm formation, morphology, and metabolism. The gradients likely contribute to mechanical properties, internal stresses, and nutrient transport. The sensor readouts also show that there is an osmotic pressure difference between the biofilm and the adjacent medium, which may promote biofilm expansion through matrix swelling and bacteria growth via water and nutrient uptake from the surroundings. Our novel approach based on in-situ osmotic pressure mapping in a growing biofilm reveals a sophisticated spatial regulation of physical forces, which may inspire new models and approaches in the field of mechanobiology.
### Competing Interest Statement
The authors have declared no competing interest.
German Research Foundation, SFB1444
Max Planck Society, MaxWater initiative
#modern #culture 品質低下 - ポイズン雷花の小説 - pixiv
現代社会では効率化やコスト削減ばかりを求める構図、いやっ、悪文化が形成されている。「とにかく早く出せ」、「奴らより先に出せ」、そうして圧力を掛け品質の低下を招いてるのが実態。結果品質管理はみの次にされ、とにかく（何でも良いから）期限まで開発、又は納品すると云う災いが生じてる。過剰
#disaster #arisen Declining quality - ポイズン雷花の小説 - pixiv
In modern society, a bad culture has been formed that demands efficiency and cost reduction. "Just hurry up," "Get it out before them," and
#unreasonable #longer Деградація якості - ポイズン雷花の小説 - pixiv
У сучасному суспільстві сформувалася структура, а точніше погана культура, яка прагне лише ефективності та зниження витрат. Реальність поляг
Bundled Exterior Maintenance Services for Property Managers
#Window Washing Services
#Waterproofing Services
#Pressure Washing Services
Rxiv mechanobio
Clayton Hove
Emerald Emigo
ポイズン雷花
annjdoyle924