KTH Royal Institute of Technology

1.5 µm Emission Properties of Erbium‐Implanted Thin‐Film Lithium Niobate

ABSTRACT Lithium niobate on insulator (LNOI) has emerged as a promising platform for photonic integrated circuits due to its strong electro‐optic, piezoelectric and nonlinear properties. The incorporation of rare‐earth ions, particularly erbium (Er 3+ ), enables potential functio...

An additional water is introduced into the manganese cluster during the formation of the S3 state of photosystem II

During photosynthetic water oxidation, the Mn4Ca cluster in Photosystem II progresses through five intermediate Si (i = 0–4) states. X-ray crystallography studies have reported the insertion of one new O ligand during the formation of the S3 state, but recent studies question the...

Investigation of the induction heating behavior of aluminum particles under different filling structures for electromagnetic tapping

To achieve rapid melting of the blocking alloy during the electromagnetic tapping, hot-state physical simulation experiments were carried out to investigate the feasibility of using aluminum particles as the core filling material. The induction heating behaviour and melting mecha...

Clinical outcomes and opportunities for improvement across modified trauma quality improvement cohorts: a registry-based cohort study

<title>Abstract</title> Background The American College of Surgeons Trauma Quality Improvement Program (TQIP) relies primarily on risk-adjusted mortality benchmarking, yet mortality alone may overlook non-fatal morbidity and care-process failures, particularly in cohorts where ou...

Overcoming Uncontrolled Nucleation and Cesium Salt Solubility Limits in Scalable Perovskite Deposition through All-Inorganic Perovskite Nanocrystal Seeding

Abstract Optoelectronic performance, defect density, and thin-film morphology of solution-processable lead halide perovskites are highly dependent on nucleation and growth conditions during processing. Additionally, Cs+ incorporation into the lattice can have benign effects on th...

Isotropic-carrier-transport perovskite single crystal enables high-photoresponsivity solar-blind photodetectors for selective flame monitoring

Low-dimensional halide perovskites are promising candidates for solar-blind ultraviolet photodetectors. However, simultaneously achieving high photoresponsivity and low dark current remains challenging, due to the restricted transport and collection of photogenerated carriers cau...

Enzymatic degradation of conjugated polymer thin films for electrochemical transistors

Degradable imine linkers within the polymer backbone enabled acid-triggered organic mixed ionic–electronic conductors (OMIECs). Yet, for many bioelectronic applications, OMIECs must work in direct contact with physiological fluids, making it challenging to achieve both excellent...

Architecture and gathering: on spatiality, conception and revaluation in material reuse practice

Purpose This paper seeks to advance the gathering of used materials for construction both as a practice and as a conceptual framework relevant to architecture. It critically examines disposed building materials, including their societal flows, their role in design processes and t...

Building sets, Chow rings, and their Hilbert series

Abstract We establish formulas for the Hilbert series of the Chow ring of a polymatroid using arbitrary building sets. For braid matroids and minimal building sets, our results produce new formulas for the Poincaré polynomial of the moduli space $$\overline{\mathcal {M}}_{0,n+1}$...

Use of machine learning to enhance detection of transient astronomical phenomena in historical observatory images

Transient, star-like point sources that appear and vanish over short timescales are described in astronomical images prior to launch of Sputnik. We have reported that transient numbers diminish significantly in Earth’s shadow (shadow deficit) and are more likely within (+/-) one...

Trapped at Home: Individual and Situational Factors Associated With Violence Against Older Adults in Brazil

Violence against older adults often occurs within domestic and family settings, but less is known about how these contexts vary by age and gender. This study examines the associations of age and gender with residential occurrence and family-related offending in Brazil. Using nati...

The B(E2) anomaly: evidence for a low-lying mixed-symmetry collective excitation mode

Abstract Exceptionally low values of the ratio of electric quadrupole transition rates, $$B_{4/2}\equiv B(E2;4^+_1\rightarrow 2^+_1)/B(E2;2^+_1\rightarrow 0^+_{\textrm{gs}})&lt;1$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>B</mml:mi>...

Integrating Graphical and Formal Modelling to Analyse the Impact of Cyberattacks on Safety of Networked Control Systems

Over recent years, the number of cyberattacks on safety-critical systems, including railways, has been rapidly increasing. To analyze the impact of cyberattacks on safety, we need to create methods supporting a systematic and rigorous analysis of system behavior in the presence o...

Secure Set-based State Estimation for Safety-Critical Applications under Adversarial Attacks on Sensors

Set-based state estimation provides guaranteed state inclusion certificates that are crucial for the safety verification of dynamical systems. However, when system sensors are subject to cyberattacks, maintaining both safety and security guarantees becomes a fundamental challenge...

Imaging of ROR1 expression in tumors using radiolabeled affibody molecules

Abstract Purpose Receptor tyrosine kinase-like orphan receptor 1 (ROR1) is an attractive molecular target for anti-tumor therapies undergoing late-stage clinical development. Quantitative imaging of ROR1 expression could enable identification of patients likely to respond to such...

Long-term thermal stability of a novel B2-NiAl precipitate-hardened alumina forming martensitic steel

A new steel was designed for high-performance applications under extreme conditions by combining a martensitic microstructure and the co-precipitation of nano-sized MC and B2-NiAl precipitates, along with the ability to generate a protective Al-rich oxide scale. This study focuse...

Q-methodology with pre-school-aged children: practical challenges and emerging opportunities

Abstract Research involving pre-school children continues to present ethical, methodological and practical challenges. Children in this age group are often excluded from studies or represented through proxy reporting by their parents. If they are not permitted to participate dire...