Results 81 to 90 of about 11,774 (280)

Nutation damping of dynamically tuned gyroscopes

MATEC Web of Conferences, 2017
The paper deals with the problem of nutation damping of dynamically tuned gyroscopes (DTG). Unlike the common two-axis gyroscopes, the DTG damping torques caused by dry and viscous frictions are absent in gimbal bearings, while those due to the rotor ...
Belyanin Lev, Vu Doan Ket
doaj   +1 more source

ELECTRONIC DESIGN OF CHARGE SENSITIVE AMPLIFIERS

Sensor Electronics and Microsystem Technologies, 2008
Possible ways of electronic design of charge sensitive amplifiers are presented in the paper. Designed amplifiers with semiconductor sensors determine low limit of energy sensitivity at studying of ionized radiation.
Shvets, A. G., Rarenko, I. M.
openaire   +3 more sources

Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor

Advanced Functional Materials, EarlyView.
Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben, Nicolas Gauquelin, Arno Annys, Zhaoliang Liao, Jo Verbeeck, Guus Rijnders, Gertjan Koster   +6 more
wiley   +1 more source

Design E–k diagram in semiconductors for stable FETs operation [PDF]

AIP Advances
In the current study, we report on the modeling and design of the GaxAl1−xAs semiconductor material to help improve the stable operation of RF amplifiers.
S. Mil’shtein, P. Ersland
doaj   +1 more source

Toward Tunable Magnetic Dirac Semimetals: Mn Doping of Cd3As2

Advanced Functional Materials, EarlyView.
Dilute magnetic doping of topological semimetals offers a pathway to tune the topological phase via time reversal symmetry breaking. This is achieved by alloying the Dirac semimetal Cd3As2 with Mn via molecular beam epitaxy. Magnetotransport measurements provide preliminary evidence of changes to the electronic structure consistent with the emergence ...
Anthony D. Rice, Ian Leahy, Herve Ness, Andrew G. Norman, Karen N. Heinselman, Chun‐Sheng Jiang, David Graf, Alexey Suslov, Stephan Lany, Mark Van Schilfgaarde, Kirstin Alberi   +10 more
wiley   +1 more source

Optimizing ultra-wideband balanced power amplifiers through the selection of different output impedance transformation based on SiP techniques

AIP Advances
In this paper, two improved ultra-wideband (UWB) balanced power amplifiers based on the flip-chip system-in-package technique and electronic design automation (EDA) are proposed.
Chung-Hung Hong, Sheng-Jen Cheng, Pi-Neng Shen, Chung-Ping Chen   +3 more
doaj   +1 more source

Comment on noise in transferred electron amplifiers

Solid-State Electronics, 1982
Abstract The noise in transferred electron amplifiers is usually attributed to thermal noise of the carriers in the two valleys and intervalley scattering noise. The latter is here interpreted as being due to carrier density fluctuations in the two valleys (partition noise), which, because of the difference in mobility in the upper and lower valleys,
Electrical Engineering Department, University of Florida, Gainesville, FL 32611, U.S.A. ( host institution ), Handel, P.H. ( author ), van der Ziel, A. ( author )   +2 more
openaire   +2 more sources

Intrinsic Photoactive Star ZnPc–Poly(glutamate) Nanoplatforms for Multimodal Glioblastoma Therapy and Brain‐Targeted Delivery

Advanced Functional Materials, EarlyView.
An intrinsic photoactive star‐shaped zinc phtalocyanine‐poly(L‐glutamic acid) (ZnPc‐PGA) nanoplatform for multimodal glioblastoma (GBM) therapy and brain‐targeted elivery. A ZnPc‐PGA‐based multifunctional theranostic nanocarrier platform enables image‐guided, multimodal GBM therapy. ZnPc‐PGA nanocarriers support the integration of fluorescence imaging,
Amina Benaicha‐Fernández, Teodora Ranđelović, Ana Armiñán, Víctor Sebastián, Manuel Fuentes, Cristián Huck‐Iriart, Esther Masiá, Paula Carrascosa‐Marco, Pablo Juanes‐Velasco, Snežana Đorđević, Clara Bayona, Ignacio Ochoa, Maria Medel, Inmaculada Conejos‐Sánchez, María J. Vicent   +14 more
wiley   +1 more source

Exploring an Alternative to mRNA Vaccine Cold Chain Storage: MRNA‐Lipid Nanoparticle Stability When Dried in a Polymer Matrix

Advanced Functional Materials, EarlyView.
The nanostructure, size, and function of mRNA‐loaded lipid nanoparticles are evaluated before drying, within polymer microneedles, and after rehydration. The results reveal the polymer and LNP loadings required to recover nanostructure and preserve the delivery performance in dry‐state formulations.
Brendan P. Dyett, Shahad K. Alsaiari, John L. Daristotle, Timothy A. Forster, Alicia Lau, Dhruv Varshney, Rania Afaneh, Andrew R. Hanna, Charles Sloane, David Mankus, Haitao Yu, Jiali Zhai, DongSoo Yun, Lisa H. Tostanoski, Abigail Lytton‐Jean, Dan H. Barouch, Charlotte E. Conn, Robert Langer, Ana Jaklenec, Calum J. Drummond   +19 more
wiley   +1 more source

Methods and Practical Aspects of Measuring 1/f Noise in Zero-drift Operational Amplifiers

Measurement Science Review
Operational amplifiers are an important ingredient of analogue electronic circuits, and their noise performance is an essential design parameter. However, at low frequencies, data provided by component manufacturers usually cover only a limited range ...
Sukuba Jaromir, Beev Nikolai, Sabo Jakub, Valuch Daniel   +3 more
doaj   +1 more source