Results 31 to 40 of about 3,058 (150)
Index to 1984 NASA Tech Briefs, volume 9, numbers 1-4 [PDF]
, 1987 Short announcements of new technology derived from the R&D activities of NASA are presented. These briefs emphasize information considered likely to be transferrable across industrial, regional, or disciplinary lines and are issued to encourage ...
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Machine Learning Design of Soft Magnetoresponsive Materials With Multidirectional Fields
SmartMat, Volume 6, Issue 6, December 2025.Combining deep learning with evolutionary algorithms, this study accurately predicts the deformation of soft magneto‐responsive materials under different external magnetic fields and inversely designs initial magnetization distributions and external field directions based on desired deformation.
Xin Ye +7 more
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Stable Electrostatic Levitation using Conformal Metasurfaces with Negative Polarizability
Small Structures, Volume 6, Issue 12, December 2025.This article presents a conceptual and exploratory theoretical study on the feasibility of stable electrostatic levitation using a finite, conformal 2D metasurface with negative static polarizability aiming toward future physical realizable devices. Using polarizability magnitude, the levitation height is tunable reaching up to ten times the lattice ...
Rahul Dutta, Yang Hao
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Multi - objective sliding mode control of active magnetic bearing system [PDF]
, 2009 Active Magnetic Bearing (AMB) system is known to inherit many nonlinearity effects due to its rotor dynamic motion and the electromagnetic actuators which make the system highly nonlinear, coupled and open-loop unstable. The major nonlinearities that are
Husain, Abdul Rashid
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Micro/Nanorobots for Combating Brain Disorders: Challenges, Advances, and Perspectives
Advanced Science, Volume 12, Issue 44, November 27, 2025.Micro/nanorobots (MNRs) offer a transformative approach for precision therapy in brain disorders. By overcoming biological barriers and enabling controlled propulsion, targeted delivery, and real‐time imaging/tracking, MNRs pave the way toward effective, minimally invasive treatments. This review outlines the interplay between brain disease challenges,
Qi Zhang, Dong Sun
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Advanced Electronic Materials, Volume 11, Issue 19, November 18, 2025.Vacuum thermal evaporation (VTE) is the dominant method for manufacturing high‐performance small‐molecule organic light‐emitting diodes (OLEDs). Its mature application in OLEDs offers valuable guidance for emerging perovskite light‐emitting diodes (PeLEDs).
Chenxi Shen +8 more
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A Novel Strategy for Preparing High‐Entropy Ceramics Through Full Glass Crystallization
ENERGY &ENVIRONMENTAL MATERIALS, Volume 8, Issue 6, November 2025.This study focuses on an innovative strategy for preparing high‐entropy ceramics applicable in extreme environmental protection and related fields. The high‐entropy (Eu0.2Gd0.2Y0.2Yb0.2Lu0.2)3Al5O12 samples prepared by the low‐temperature glass crystallization method exhibit a low thermal conductivity (3.58 W m−1 K−1), high thermal expansion (10.85 ...
Zhibiao Ma +9 more
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High‐Performance Millimeter Scale Electromagnetic Generator
Advanced Functional Materials, Volume 35, Issue 39, September 25, 2025.A high‐performance millimeter‐scale electromagnetic generator (mmEMG) is developed using magnetic flux concentrator (MFC) films on both coil ends to enhance magnetic flux. Through simulations and experiments, structural and magnetic properties are optimized, achieving a 5.6‐fold electrical output improvement.
Jin Pyo Lee +5 more
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Advanced Contactless Bioassembly Approaches: Leveraging Sound, Optical, and Magnetic Fields
Advanced NanoBiomed Research, Volume 5, Issue 9, September 2025.This review explores innovative contactless bioassembly techniques driven by sound, light, and magnetic fields, which enable the precise organization of cells, biomaterials, and bioactive substances into complex 3D structures. These technologies, crucial for in vitro modeling and regenerative medicine, are examined in detail, highlighting their ...
Micaela Natta +4 more
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A magnetic bearing based on eddy-current repulsion [PDF]
This paper describes a new type of electromagnetic bearing, called the Eddy-Current Bearing, which works by repulsion between fixed AC-electromagnets and a conducting rotor.
Nikolajsen, J. L.
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