Results 241 to 250 of about 1,215,652 (285)

Local Solvent Ordering Drives Supramolecular Chirality Inversion

Advanced Science, EarlyView.
Local solvent organization is shown to govern supramolecular chirality by selecting distinct chiral assembly pathways. A subtle change in water‐DMSO composition reverses the helical sense of a chiral perylene bisimide, while heating induces an irreversible thermal inversion to a more stable enantiomorph.
Triza Pal, Akta Singh, Subinoy Adhikari, Jagannath Mondal, Debangshu Chaudhuri   +4 more
wiley   +1 more source

Transients in the Palomar Observatory Sky Survey (POSS-I) may be associated with nuclear testing and reports of unidentified anomalous phenomena. [PDF]

Sci Rep
Bruehl S, Villarroel B.
europepmc   +1 more source

Toward High‐Resolution Polymeric Neural Interfaces: A Practical Guide for Electron Beam Lithography

Advanced Science, EarlyView.
Electron beam lithography (EBL) enables sub‐micron patterning of polymer‐based neural implants, overcoming the resolution limits of optical lithography. By addressing challenges such as charging, non‐planarity, and substrate heating, it supports higher channel density, improved miniaturization, and better long‐term tissue integration.
Hanna Karlsson‐Fernberg, Maria Asplund
wiley   +1 more source

Fractal nature of galaxy clustering in the updated CfA redshift catalog. [PDF]

Sci Rep
Macek WM, Wójcik D.
europepmc   +1 more source

Performance Estimation and Ex Vivo Validation of Untethered Magnetic Robots in Soft Tissue

Advanced Science, EarlyView.
This study presents an empirical model that quantitatively predicts the step‐out frequency of screw‐type untethered magnetic robots (UMRs) in soft viscoelastic environments, including ex vivo brain tissue. By integrating key parameters into a dimensionless framework, the model enables estimation of robot performance across a range of biological ...
Leendert‐Jan W. Ligtenberg, Thijs J. van der Burg, Stijn Y. Kolkman, Santiago Saavedra Castano, David Fernandez Rivas, Anke Klingner, Roger M. L. M. Lomme, Lucas S. Joziasse, Dorothee Wasserberg, H. Remco Liefers, Doron Ben Ami, Udi Sadeh, Oded Shoseyov, Giulio Dagnino, Pascal Jonkheijm, Jurgen J. Fütterer, Stefano Stramigioli, J. Frank W. Nijsen, Michiel C. Warlé, Islam S. M. Khalil   +19 more
wiley   +1 more source

Unipolar Barrier Near‐Infrared 2D Photodetectors for 3D Image Sensors

Advanced Science, EarlyView.
A MoTe2/WSe2/Cl–SnSe2 unipolar barrier photodetector is demonstrated, in which the WSe2 layer effectively blocks majority‐carrier injection, yielding suppressed dark current and enhanced near‐infrared (NIR) sensing. The device achieves high detectivity, a wide linear dynamic range, and fast response under 1310 nm illumination, enabling high‐fidelity 3D
Jung Pyo Hong, Sang‐Jun Kim, Jisu Jang, Je‐Jun Lee, Seong‐Jun Han, Eungseon Yeon, Jung Woo Kim, Jongtae Ahn, Sang Yeon Kim, Hyun Woo Ko, Sunghyun Han, Seung Ah Lee, Paul Hongsuck Seo, Young‐Woo Suh, Kimoon Lee, Gunuk Wang, Dong‐Guang Zheng, Sunghee Hong, Sangin Hahn, Seon Kyu Yoon, Min‐Chul Park, Do Kyung Hwang   +21 more
wiley   +1 more source

3D Printed Meter‐Scale Soft Origami Robots Capable of Load‐Bearing Actuation Via Crease Stiffness Modulation

Advanced Science, EarlyView.
Origami has inspired numerous soft deployable mechanisms for safe human‐robot interaction, while its intrinsic kinematic instability at arbitrary configurations limited their practical robotic application. This work presents a 3D printed meter‐scale origami robotic actuator capable of load‐bearing deformation through creaseline stiffness modulation.
Sung Yol Yu, Sang‐Joon Ahn, Wonchul Lee, Seunguk Moon, Hyun‐Jin Hong, Kyu‐Jin Cho   +5 more
wiley   +1 more source

High‐Power Hybrid Nanogenerator With Multi‐Degree‐of‐Freedom Mechanical Coupling for Harvesting Water Wave Energy

Advanced Science, EarlyView.
A high‐power hybrid nanogenerator (HP‐HNG) with multi‐degree‐of‐freedom mechanical coupling is reported, integrating multi‐directional wave energy for output to achieve 1 + 1 > 2 energy harvesting. The HP‐HNG achieves a peak output power of 0.764 W, corresponding to a peak power density of 127.303 W m−3. At a wave frequency of 1 Hz, the HP‐HNG delivers
Shuai Ding, Hua Zhai, Hao Gong, Xiao Long, Yuanzhuo Tian, Zhanyong Hong, Long Zheng, Xucong Wang, Xiangyu Chen, Zhong Lin Wang   +9 more
wiley   +1 more source

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Far-Infrared Surveys of the Sky

Science, 1967
A series of far-infrared surveys of the sky is searching for thermal radiation from interstellar grains and for other localized sources of far-infrared radiation. A balloon-borne germanium bolometer, cooled by liquid helium, is used in association with a telescope and spectral filters.
W F, Hoffmann, N J, Woolf, C L, Frederick, F J, Low   +3 more
openaire   +2 more sources

Sky surveys with ASCA — Deep Sky Survey

Astronomische Nachrichten, 1998
AbstractASCA Deep Sky Survey (DSS) is aimed to investigate the constituents of the CXB in 2–10 keV band, by faint source survey observations reaching to the source confusion limit of ASCA X‐Ray Telescopes. So far, 0.29 deg2 sky regions were systematically studied and about 40% of the CXB intensity was resolved into discrete sources.
Y. Ogasaka, T. Kii, Y. Ueda, T. Takahashi, H. Inoue, Y. Ishisaki, K. Ohta, T: Yamada, K. Makishima, T. Miyaji, G. Hasinger   +10 more
openaire   +1 more source