Characterization of lead free solder joints in microelectronics assemblies by Hla Phone Maw.

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Doping and switchable photovoltaic effect in lead-free perovskites enabled by metal cation transmutation by Harikesh, Padinhare Cholakkal, Wu, Bo, Ghosh, Biplab, John, Rohit Abraham, Lie, Stener, Thirumal, Krishnamoorthy, Wong, Lydia Helena, Sum, Tze Chien, Mhaisalkar, Subodh, Mathews, Nripan

“…Creating defect tolerant lead-free halide perovskites is the major challenge for development of high-performance photovoltaics with nontoxic absorbers. …”
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Lead-free PCB assembly and effect of solder joint profile on the reliability of PCB assembly by Periannan Arulvanan.

“…Lead-free Printed Circuit Board (PCB) assembly evaluation was undertaken to determine the effect of solder joint profile on the reliability of PCB assembly, by varying the foot print design on the PCB, solder paste deposition volume and solder reflow profile. …”
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Long electron-hole diffusion length in high-quality lead-free double perovskite films by Ning, Weihua, Wang, Feng, Wu, Bo, Lu, Jun, Yan, Zhibo, Liu, Xianjie, Tao, Youtian, Liu, Jun-Ming, Huang, Wei, Fahlman, Mats, Hultman, Lars, Sum, Tze Chien, Gao, Feng

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Solar energy harvesting using lead-free pyroelectric bulk ceramics: a simulation study by Saurabh, Nishchay, Kiran, Raj, Patel, Satyanarayan

“…This work shows the potential of lead-free pyroelectric materials for solar energy harvesting with losses in the circuit.…”
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God v. free will by Loh, Xi Hong

“…This paper investigates the paradox between God’s foreknowledge and human free will. The compatibility between these two either is often only made possible when one is compromised. …”
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Understanding the methylammonium chloride-assisted crystallization for improved performance of lead-free tin perovskite solar cells by Cuzzupè, Daniele T., Öz, Senol Dilara, Ling, Jinkiong, Illing, Elias, Seewald, Tobias, Jose, Rajan, Olthof, Selina, Azhar, Fakharuddin, Schmidt-Mende, Lukas

“…However, they suffer from material instability and rapid crystallization, leading to high defect densities in the films. In this work, the methylammonium chloride (MACl)-assisted crystallization as a route to improve stability and optoelectronic quality of quasi 2D/3D PEA0.08FA0.92SnI3 perovskite is demonstrated. …”
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Crystal Engineering of a Two-Dimensional Lead-Free Perovskite with Functional Organic Cations by Second-Sphere Coordination by Cortecchia, Daniele, Soci, Cesare, Cametti, Massimo, Petrozza, Annamaria, Martí-Rujas, Javier

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Maximizing Free Energy Gain by Kolchinsky, Artemy, Marvian, Iman, Gokler, Can, Liu, Zi-Wen, Shor, Peter, Shtanko, Oles, Thompson, Kevin, Wolpert, David, Lloyd, Seth

“…We provide simple necessary and sufficient conditions for increasing the gain of free energy by varying the initial state. We also derive simple formulae that relate the free energy gained using the optimal initial state rather than another suboptimal initial state. …”
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ASEAN free trade agreements by Lee, Su-Hyun

“…ASEAN’s commitment to regional economic cooperation through trade and investment liberalization has become increasingly important amid global economic uncertainty. ASEAN’s Free Trade Agreements will continue to play a vital role in the economic prosperity and stability of the region, and in realizing ASEAN’s goal of regional economic integration.…”
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Emergent semantic segmentation: training-free dense-label-free extraction from vision-language models by Luo, Jiayun

“…In this thesis, we propose a simple, yet extremely effective, training-free technique, Plug-and-Play Open-Vocabulary Semantic Segmentation (PnP-OVSS) for this task. …”
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Clique covers of H-free graphs by Nguyen, T, Scott, A, Seymour, P, Thomassé, S

Robust Eye-Based Dwell-Free Typing by Liu, Yi, Lee, Bu-Sung, McKeown, Martin J.

“…Eye gaze technologies have potential for text entry, but still tend to be relatively slow. Recently dwell-free eye-typing systems have been proposed, but can be vulnerable to common text entry problems, such as selection of the wrong letters. …”
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Free-standing one-dimensional plasmonic nanostructures by Jiang, Lin, Sun, Yinghui, Huo, Fengwei, Zhang, Hua, Qin, Lidong, Li, Shuzhou, Chen, Xiaodong

“…In this feature article, a category of chemically nanofabricated, unique free-standing one-dimensional (1D) plasmonic nanostructures has been summarized. …”
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On the largest product-free subsets of the alternating groups by Keevash, Peter, Lifshitz, Noam, Minzer, Dor

“…Comb. 6(2):101–114, 1985) conjectured that the group A n $A_{n}$ also contains a product-free set of constant density. This conjecture was refuted by Gowers (whose result was subsequently improved by Eberhard), still leaving the long-standing problem of determining the largest product-free subset of A n $A_{n}$ wide open. …”
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The Indonesian budget and Prabowo's free-food plan by Borsuk, Richard

“…Prabowo Subianto, slated to become Indonesia’s president in October, pledged during the election campaign to provide free lunches and milk so that the country’s schoolchildren will have nutritious food. …”
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Computer simulation of complex free surface flows by Tan, Hsiang Hui.

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Effect of free will on opinion formation in social system by Huang, Zheng Si

“…The existing studies on opinion formation in societies typically ignore the effects of free will. In this project, we shall study on the system/opinion co-evolution with a specific focus on the effects of free will. …”
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The Northern sea route : is it really ice-free? by Ho, Joshua

“…Notwithstanding the recent record warming in the northern polar region and the Russian pronouncement that the Northern Sea Route (NSR) is now ice-free, several challenges have to be addressed before the commercial viability of the NSR can be realised.…”
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Centralisers of linear growth automorphisms of free groups by Andrew, N, Martino, A

“…In this note we investigate the centraliser of a linearly growing element of Out(Fn) (that is, a root of a Dehn twist automorphism), and show that it has a finite index subgroup mapping onto a direct product of certain “equivariant McCool groups” with kernel a finitely generated free abelian group. In particular, this allows us to show it is VF and hence finitely presented.…”