Results 111 to 120 of about 1,249,343 (219)

A novel two-axis MEMS scanning mirror with a PZT actuator for laser scanning projection

Optics Express, 2012
This study presents a novel design for a two-axis scanning device driven by lead-zirconate-titanate (PZT) ceramic. The proposed device consists of a scanning mirror and a Y-shaped piezoelectric actuator. The scanning mirror was fabricated using an MEMS process involving three masks.
Chung-De, Chen, Yu-Jen, Wang, Pin, Chang
openaire   +2 more sources

Mesenchymal stem cells as cellular factories for targeted P2X7 blockade after traumatic brain injury

Neuroprotection, EarlyView.
This manuscript presents a novel therapeutic strategy using mesenchymal stem cells (MSCs) engineered as living drug factories to deliver a P2X7‐blocking nanobody for treatment of ischemic stroke. By combining targeted cellular delivery with sustained local immunomodulation, the approach aims to overcome key limitations of systemic biologic ...
Lucia Fadon‐Padilla, Chengyan Chu, Lorissa McDougall, Yajie Liang, Chinmoy Sarkar, Marta Lipinski, Tim Magnus, Miroslaw Janowski, Piotr Walczak   +8 more
wiley   +1 more source

Quasi-statically actuated MEMS scanner with concentric vertical comb electrodes

Micro and Nano Systems Letters
A quasi-static (QS) MEMS mirror scanner with concentric vertical combs (CVC) is presented. The increase rate of overlapped area of the CVC, tends to show larger values and more uniform than that of conventional vertical combs, resulting in improved ...
Daehwan Chae, Do-hyeon Jeong, Seong-jong Yun, Kyoung-woo Jo, Jong-Hyun Lee   +4 more
doaj   +1 more source

Enhancements of MEMS design flow for Automotive and Optoelectronic applications [PDF]

, 2010
In the latest years we have been witnesses of a very rapidly and amazing grown of MicroElectroMechanical systems (MEMS) which nowadays represent the outstanding state-of-the art in a wide variety of applications from automotive to commercial, biomedical ...
MARCHETTI, ELEONORA
core  

Optically Driven AuCu Alloying in Single Nanoparticles Revealed by In Situ TEM

Small, EarlyView.
In situ transmission electron microscopy with picosecond laser illumination reveals how single gold nanorods reversibly take up and release copper from their carbon support, forming homogeneous AuCu alloys. Laser fluence and illumination time serve as control parameters, making composition dynamically tunable, and with it the functional properties it ...
Francesca Scalerandi, Loriane Monin, Nathan J. Mowry, Wiebke Albrecht   +3 more
wiley   +1 more source

A Comprehensive Characterization Procedure for Resonant MEMS Scanning Mirrors

Eurosensors 2023
We demonstrate an experimental assessment of a high-Q, high-angle piezoelectric (2 µm PZT) MEMS scanning micromirror featuring distributed backside reinforcement, suitable for applications demanding energy-efficient and high-quality image projection. Frequency response measurements at 10 different vacuum levels ranging from atmospheric pressure to 10−6
Clement Fleury, Markus Bainschab, Gianluca Mendicino, Roberto Carminati, Pooja Thakkar, Dominik Holzmann, Sara Guerreiro, Adrien Piot   +7 more
openaire   +2 more sources

Characteristics Measurement and Jitter-Reduction of MEMS Scanning Mirror System

, 2007
微機電製品有著輕巧、微小、堅固與快速的切換時間(通常指共振頻率)，透過光學知識與微機電技術融合，一種新的領域微光機電系統因應而生。在眾多光學元件中，微機電掃瞄面鏡藉由隨時間變化的轉動角度，使得入射到微機電掃瞄面鏡上的光線，被反射到各種不同的角度上。由於微機電掃瞄面鏡可以忽視光波長的影響，而達到高解析度和大轉動角度的特點，使得它被廣泛應用在商品、科學與工業應用上。 本論文所使用的微機電掃描面鏡為設計來取代現有雷射印表機所使用的多面鏡。由於微機電掃描面鏡在掃描過程中，因輸入訊號、系統本身及製造過程因素 ...
許國基, HSU, KUO-CHI
core  

A Multimodal In‐Situ Liquid Phase TEM and Electrochemical Study on Boric Acid as Electrolyte Additive for Alkaline Zinc‐Air Batteries

Small Methods, EarlyView.
This study establishes a multimodal correlative workflow to bridge disparate analytical scales in battery research. By linking dynamic in‐situ liquid‐phase TEM at the nanoscale with microscale morphological analysis and macroscale electrochemistry, a comprehensive mechanistic evaluation of electrolyte additives is achieved.
Sarmila Dutta, Yasin Emre Durmus, Eunmi Im, Hongyu Sun, Hugo Pérez Garza, Shibabrata Basak, Hans Kungl, Hermann Tempel, Rüdiger‐A. Eichel   +8 more
wiley   +1 more source

Schematic system setup and MEMS mirror control waveforms.

, 2014
(a) system configuration (C: circulator, PC: polarization controller, DAQ: data acquisition card.) (b) filtered and scaled waveforms generated by DAQ to MEMS driver to control the scanning mirror.
Jin U. Kang (669910), Dedi Tong (669909), Georg J. Furtmüller (669908), Yong Huang (15745), Shan Zhu (211916), W. P. Andrew Lee (474201), Gerald Brandacher (424155)   +6 more
core   +1 more source

Engineering ApoE‐Mimetic HDL‐Like Nanoparticles for Glioblastoma‐Targeted Theranostics

Small Methods, EarlyView.
An ApoE‐mimetic peptide enables the stable formation of sub‐30 nm HDL‐like nanoparticles (ApoEm‐PLP) that simultaneously engage multiple lipoprotein receptors. This multivalent receptor interaction facilitates the transport of ApoEm‐PLP into brain and enhances targeted delivery of ApoEm‐PLP to glioblastoma, resulting in uniform intratumoral porphyrin ...
Hanyi Weng, Rick Wentao Cui, Ling Xi Gong, Ashley Qian, Lili Ding, Nahyun Kwon, Yiming Yang, Yulin Mo, Tiffany Ho, Madeline K. Brown, Maneesha Amrita Rajora, Juan Chen, Gang Zheng   +12 more
wiley   +1 more source