Spinhenge@home - Revision history

Al Piskun: first light

2026-06-17T02:15:57Z

first light

← Older revision		Revision as of 02:15, 17 June 2026
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	'''Spinhenge@home''' was a [[volunteer computing]] project on the [[Berkeley Open Infrastructure for Network Computing\|BOINC]] platform, operated by the Bielefeld University of Applied Sciences (''Fachhochschule Bielefeld''), Germany, in cooperation with the [[University of Osnabrück]] and the [[Ames Laboratory]] in Iowa, United States.<ref name="wp">{{Cite web \|title=Spinhenge@Home \|url=https://en.wikipedia.org/wiki/Spinhenge@Home \|website=Wikipedia \|access-date=2026-06-16}}</ref> The project employed the [[Metropolis algorithm\|Metropolis]] [[Monte Carlo method\|Monte Carlo algorithm]] to simulate [[spin (physics)\|spin]] dynamics and thermodynamic properties of nanoscale [[single-molecule magnet]]s, seeking to advance the understanding of [[molecular magnetism]] and its potential applications in medicine and nanotechnology. Its public beta phase opened on 1 September 2006,<ref name="rechenkraft">{{Cite web \|title=Spinhenge@home (beendet) \|url=https://www.rechenkraft.net/wiki/Spinhenge@home_(beendet) \|website=Rechenkraft.net \|access-date=2026-06-16}}</ref> and it became one of the largest BOINC-based projects in the world by participant count, ultimately enrolling close to 60,000 registered users and over 150,000 participating computers before entering an indefinite hiatus in September 2011.<ref name="hsbi">{{Cite web \|title=Public Resource Computing Technologien für Hochleistungsrechnen \|url=https://www.hsbi.de/ium/forschung/arbeitsgruppen/computational-materials-science-and-engineering/forschungskonzept-der-ag-computational-materials-science-and-engineering/neu \|website=Hochschule Bielefeld (HSBI) \|access-date=2026-06-16}}</ref>		'''Spinhenge@home''' was a [[volunteer computing]] project on the [[Berkeley Open Infrastructure for Network Computing\|BOINC]] platform, operated by the Bielefeld University of Applied Sciences (''Fachhochschule Bielefeld''), Germany, in cooperation with the [[University of Osnabrück]] and the [[Ames Laboratory]] in Iowa, United States.<ref name="wp">{{Cite web \|title=Spinhenge@Home \|url=https://en.wikipedia.org/wiki/Spinhenge@Home \|website=Wikipedia \|access-date=2026-06-16}}</ref> The project employed the [[Metropolis algorithm\|Metropolis]] [[Monte Carlo method\|Monte Carlo algorithm]] to simulate [[spin (physics)\|spin]] dynamics and thermodynamic properties of nanoscale [[single-molecule magnet]]s, seeking to advance the understanding of [[molecular magnetism]] and its potential applications in medicine and nanotechnology. Its public beta phase opened on 1 September 2006,<ref name="rechenkraft">{{Cite web \|title=Spinhenge@home (beendet) \|url=https://www.rechenkraft.net/wiki/Spinhenge@home_(beendet) \|website=Rechenkraft.net \|access-date=2026-06-16}}</ref> and it became one of the largest BOINC-based projects in the world by participant count, ultimately enrolling close to 60,000 registered users and over 150,000 participating computers before entering an indefinite hiatus in September 2011.<ref name="hsbi">{{Cite web \|title=Public Resource Computing Technologien für Hochleistungsrechnen \|url=https://www.hsbi.de/ium/forschung/arbeitsgruppen/computational-materials-science-and-engineering/forschungskonzept-der-ag-computational-materials-science-and-engineering/neu \|website=Hochschule Bielefeld (HSBI) \|access-date=2026-06-16}}</ref>

	[[File:Mn12-acétate.png\|thumb\|right\|Structure of the prototypical [[single-molecule magnet]] Mn<sub>12</sub>-acetate, [Mn<sub>12</sub>O<sub>12</sub>(OAc)<sub>16</sub>(H<sub>2</sub>O)<sub>4</sub>], a central subject of molecular magnetism research of the kind Spinhenge@home supported. (Image from Wikimedia Commons)]]

	== Background and scientific motivation ==		== Background and scientific motivation ==
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	== Scientific molecules studied ==		== Scientific molecules studied ==

			[[File:Icosidodecahedron.jpg\|thumb\|right\|The icosidodecahedron geometry—identical to the arrangement of the 30 magnetic ions in Mo<sub>72</sub>Fe<sub>30</sub> and Mo<sub>72</sub>Cr<sub>30</sub>, molecules studied using Spinhenge@home simulations.]]

	A prominent scientific result enabled by Spinhenge@home involved the frustrated [[polyoxometalate]] molecular magnets '''Mo<sub>72</sub>Fe<sub>30</sub>''' and '''Mo<sub>72</sub>Cr<sub>30</sub>'''—spherical cage molecules each housing 30 Fe(III) or Cr(III) magnetic ions at the vertices of an icosidodecahedron. The complete chemical formula of Mo<sub>72</sub>Fe<sub>30</sub> is:<ref name="arxiv-mo72"/>		A prominent scientific result enabled by Spinhenge@home involved the frustrated [[polyoxometalate]] molecular magnets '''Mo<sub>72</sub>Fe<sub>30</sub>''' and '''Mo<sub>72</sub>Cr<sub>30</sub>'''—spherical cage molecules each housing 30 Fe(III) or Cr(III) magnetic ions at the vertices of an icosidodecahedron. The complete chemical formula of Mo<sub>72</sub>Fe<sub>30</sub> is:<ref name="arxiv-mo72"/>
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	Experimental measurements of the differential susceptibility <math>dM/dH</math> of both molecules showed pronounced deviations from the predictions of standard Heisenberg models using a single exchange constant. Schröder and collaborators used the massive Monte Carlo simulations made possible by Spinhenge@home volunteers to formulate a nearest-neighbor model where the 60 nearest-neighbor exchange interactions in each molecule are described by a ''two-parameter probability distribution'' of exchange constants, achieving excellent agreement with experiment.<ref name="arxiv-mo72"/>		Experimental measurements of the differential susceptibility <math>dM/dH</math> of both molecules showed pronounced deviations from the predictions of standard Heisenberg models using a single exchange constant. Schröder and collaborators used the massive Monte Carlo simulations made possible by Spinhenge@home volunteers to formulate a nearest-neighbor model where the 60 nearest-neighbor exchange interactions in each molecule are described by a ''two-parameter probability distribution'' of exchange constants, achieving excellent agreement with experiment.<ref name="arxiv-mo72"/>

	[[File:Icosidodecahedron.jpg\|thumb\|right\|The icosidodecahedron geometry—identical to the arrangement of the 30 magnetic ions in Mo<sub>72</sub>Fe<sub>30</sub> and Mo<sub>72</sub>Cr<sub>30</sub>, molecules studied using Spinhenge@home simulations.]]

	Earlier related work by Schröder and collaborators (predating the BOINC project) included a study of the metamagnetic phase transition of the antiferromagnetic Heisenberg icosahedron,<ref name="icosa">{{Cite journal \|last1=Schröder \|first1=C. \|last2=Nojiri \|first2=H. \|last3=Schnack \|first3=J. \|last4=Hage \|first4=P. \|last5=Luban \|first5=M. \|last6=Kögerler \|first6=P. \|title=Competing Spin Phases in Geometrically Frustrated Magnetic Molecules: Spin Dynamics in the Icosahedral Keplerate Mo<sub>72</sub>Fe<sub>30</sub> \|journal=Physical Review Letters \|volume=94 \|issue=1 \|pages=017205 \|date=2005-01-07 \|doi=10.1103/PhysRevLett.94.017205 \|arxiv=cond-mat/0501558}}</ref> published in ''Physical Review Letters'' in 2005, which laid the groundwork for the volunteer-computing simulations.		Earlier related work by Schröder and collaborators (predating the BOINC project) included a study of the metamagnetic phase transition of the antiferromagnetic Heisenberg icosahedron,<ref name="icosa">{{Cite journal \|last1=Schröder \|first1=C. \|last2=Nojiri \|first2=H. \|last3=Schnack \|first3=J. \|last4=Hage \|first4=P. \|last5=Luban \|first5=M. \|last6=Kögerler \|first6=P. \|title=Competing Spin Phases in Geometrically Frustrated Magnetic Molecules: Spin Dynamics in the Icosahedral Keplerate Mo<sub>72</sub>Fe<sub>30</sub> \|journal=Physical Review Letters \|volume=94 \|issue=1 \|pages=017205 \|date=2005-01-07 \|doi=10.1103/PhysRevLett.94.017205 \|arxiv=cond-mat/0501558}}</ref> published in ''Physical Review Letters'' in 2005, which laid the groundwork for the volunteer-computing simulations.

Al Piskun: first light

2026-06-17T02:08:25Z

first light

New page

{{Infobox software
| name = Spinhenge@home
| logo =
| logo caption =
| screenshot =
| caption =
| description = Spinhenge@home was a completed Physics BOINC volunteer computing project simulating spin dynamics in nanoscale molecular magnets, developed by Prof. Christian Schröder at Bielefeld University of Applied Sciences in cooperation with the University of Osnabrück and Ames Laboratory.

| status = Completed
| category = Physics
| compute = CPU

| developer = Prof. Dr. Christian Schröder; Thomas Hilbig
| author = Thomas Hilbig (Diplomarbeit)
| sponsor = Bielefeld University of Applied Sciences (Fachhochschule Bielefeld); Ames Laboratory (U.S. Department of Energy)
| maintainer = Christian Schröder
| released = {{Start date and age|2006|09|01}}
| completed = 2011 (hiatus); permanently closed c. 2013
| discontinued = c. 2013

| programming language = C++
| operating system = Windows (primary); Linux (experimental, slower)

| website = {{URL|http://spin.fh-bielefeld.de}}
}}

'''Spinhenge@home''' was a [[volunteer computing]] project on the [[Berkeley Open Infrastructure for Network Computing|BOINC]] platform, operated by the Bielefeld University of Applied Sciences (''Fachhochschule Bielefeld''), Germany, in cooperation with the [[University of Osnabrück]] and the [[Ames Laboratory]] in Iowa, United States.<ref name="wp">{{Cite web |title=Spinhenge@Home |url=https://en.wikipedia.org/wiki/Spinhenge@Home |website=Wikipedia |access-date=2026-06-16}}</ref> The project employed the [[Metropolis algorithm|Metropolis]] [[Monte Carlo method|Monte Carlo algorithm]] to simulate [[spin (physics)|spin]] dynamics and thermodynamic properties of nanoscale [[single-molecule magnet]]s, seeking to advance the understanding of [[molecular magnetism]] and its potential applications in medicine and nanotechnology. Its public beta phase opened on 1 September 2006,<ref name="rechenkraft">{{Cite web |title=Spinhenge@home (beendet) |url=https://www.rechenkraft.net/wiki/Spinhenge@home_(beendet) |website=Rechenkraft.net |access-date=2026-06-16}}</ref> and it became one of the largest BOINC-based projects in the world by participant count, ultimately enrolling close to 60,000 registered users and over 150,000 participating computers before entering an indefinite hiatus in September 2011.<ref name="hsbi">{{Cite web |title=Public Resource Computing Technologien für Hochleistungsrechnen |url=https://www.hsbi.de/ium/forschung/arbeitsgruppen/computational-materials-science-and-engineering/forschungskonzept-der-ag-computational-materials-science-and-engineering/neu |website=Hochschule Bielefeld (HSBI) |access-date=2026-06-16}}</ref>

[[File:Mn12-acétate.png|thumb|right|Structure of the prototypical [[single-molecule magnet]] Mn12-acetate, [Mn12O12(OAc)16(H2O)4], a central subject of molecular magnetism research of the kind Spinhenge@home supported. (Image from Wikimedia Commons)]]

== Background and scientific motivation ==

[[Molecular magnetism]] is the study of magnetic phenomena arising from individual molecules rather than bulk materials. At the nanoscale, specially engineered [[coordination compound]]s known as [[single-molecule magnet]]s (SMMs) can retain a net magnetic moment below a characteristic ''blocking temperature'', exhibiting [[magnetic hysteresis]] of purely molecular origin.<ref name="smm-wp">{{Cite web |title=Single-molecule magnet |url=https://en.wikipedia.org/wiki/Single-molecule_magnet |website=Wikipedia |access-date=2026-06-16}}</ref> This behavior is governed by quantum mechanical spin interactions described by the [[Heisenberg model (quantum)|Heisenberg spin Hamiltonian]]:

:<math>\hat{H} = -\sum_{i < j} J_{ij}\, \hat{\mathbf{S}}_i \cdot \hat{\mathbf{S}}_j</math>

where <math>J_{ij}</math> is the exchange coupling constant between magnetic ions ''i'' and ''j'', and <math>\hat{\mathbf{S}}_i</math> is the spin operator at site ''i''. Positive <math>J</math> denotes [[ferromagnetism|ferromagnetic]] (parallel) coupling; negative <math>J</math> denotes [[antiferromagnetism|antiferromagnetic]] (antiparallel) coupling.

At low temperatures, an SMM's magnetic relaxation time <math>\tau</math> follows a Néel–Arrhenius-type thermal activation law,

:<math>\tau = \tau_0 \exp\!\left(\frac{U_\text{eff}}{k_\text{B}T}\right)</math>

where <math>U_\text{eff}</math> is the effective energy barrier to spin reversal, <math>k_\text{B}</math> is the [[Boltzmann constant]], <math>T</math> is temperature, and <math>\tau_0</math> is a characteristic attempt time on the order of 10−9 to 10−10 s. Because <math>U_\text{eff}</math> depends on both the total ground-state spin <math>S</math> and the magnetic anisotropy, numerical simulations of many possible exchange-coupling configurations are necessary to understand and ultimately design new SMMs.

Potential applications of SMMs and nanoscale molecular magnets include:

* High-density magnetic data storage (each molecule as a single bit);
* [[Spintronics]] and molecular-scale switches;
* Quantum computing using molecular spin states;
* Biomedical uses, such as targeted cancer therapy (local tumor hyperthermia) through magnetically heated nanoparticles.<ref name="rechenkraft"/><ref name="seti-germany">{{Cite web |title=Spinhenge@home |url=https://www.seti-germany.de/wiki/Spinhenge@home |website=SETI.Germany Wiki |access-date=2026-06-16}}</ref>

Computing the thermodynamic and dynamic properties—such as susceptibility and spin-spin correlation functions—of molecules with tens of spin centers requires a vast number of Monte Carlo steps. This computational burden made volunteer computing a natural fit.

== Project history ==

=== Origins ===

Spinhenge@home grew out of research by Professor Christian Schröder of the Department of Electrical Engineering and Computer Science at the [[Bielefeld University of Applied Sciences]], whose focus was Computational Materials Science and Engineering. The project was initially realized as a diploma thesis (''Diplomarbeit'') by Thomas Hilbig.<ref name="rechenkraft"/> Building on the BOINC middleware, which the [[University of California, Berkeley]] had released publicly in 2002, the project connected the physical simulation work with the then-emerging world of public resource computing.

The project website was hosted at <code>spin.fh-bielefeld.de</code>.<ref name="arxiv-mo72">{{Cite journal |last1=Schröder |first1=Christian |last2=Prozorov |first2=Ruslan |last3=Kögerler |first3=Paul |last4=Vannette |first4=Matthew D. |last5=Fang |first5=Xikui |last6=Luban |first6=Marshall |last7=Matsuo |first7=Akira |last8=Kindo |first8=Koichi |last9=Müller |first9=Achim |last10=Todea |first10=Ana Maria |title=Multiple nearest-neighbor exchange model for the frustrated magnetic molecules Mo72Fe30 and Mo72Cr30 |journal=Physical Review B |volume=77 |issue=22 |pages=224409 |date=2008-06-04 |doi=10.1103/PhysRevB.77.224409 |arxiv=0801.2065 |issn=1098-0121 |s2cid=118422523}}</ref> Schröder described it as one of the largest BOINC-based public resource computing projects in the world.<ref name="linux-mag">{{Cite web |title=Public Resource Computing mit BOINC |url=https://www.linux-magazin.de/ausgaben/2011/03/boinc/5/ |website=Linux Magazin |date=2011-03 |access-date=2026-06-16}}</ref>

=== Beta launch and growth ===

The project entered public [[software release life cycle#Beta|beta testing]] on 1 September 2006.<ref name="rechenkraft"/> The German [[distributed computing]] community responded enthusiastically: for example, the team Planet 3DNow! joined on 12 September 2006, and a competitive "race" for credit milestones between teams was arranged in January 2008, involving participants from SETI.Germany, SETI.USA, and ESL, among others.<ref name="planet3dnow">{{Cite web |title=Spinhenge@home |url=https://dc.planet3dnow.de/wiki/index.php/Spinhenge@home |website=Planet 3DNow! Distributed Computing Wiki |access-date=2026-06-16}}</ref>

On 1 May 2010, the project received a five-out-of-five quality seal (''Gütesiegel'') from the German volunteer computing community organization Rechenkraft, marking it as ''absolutely recommended''.<ref name="rechenkraft"/>

=== Hiatus and closure ===

On 28 September 2011, the project team announced a hiatus while they reviewed accumulated results and planned hardware upgrades.<ref name="wp"/> As of the project manager's statement in October 2013, Spinhenge@home was still described as active,<ref name="rechenkraft"/> but its website became unreachable for extended periods and work units ceased. By July 2022, Wikipedia's article on the project noted the hiatus was ongoing and the project was likely permanently closed.<ref name="wp"/> The project is now listed as a completed BOINC project in the [[BOINC projects|BOINC Synergy project directory]].

== Computational method ==

The core simulation application—named <code>metropolis</code> in the BOINC project files—implemented the [[Metropolis–Hastings algorithm|Metropolis Monte Carlo]] method for classical [[Heisenberg model (quantum)|Heisenberg spin]] systems.<ref name="seti-germany"/> At each Monte Carlo step, a trial spin flip at a lattice site is proposed; if the resulting change in energy <math>\Delta E < 0</math>, the trial is accepted outright; if <math>\Delta E \geq 0</math>, it is accepted with probability <math>\exp(-\Delta E / k_\text{B}T)</math>, preserving [[detailed balance]] and the [[Boltzmann distribution|Boltzmann equilibrium]] distribution.

The simulations targeted molecules with dozens of magnetic ions, computing quantities such as:

* The magnetic [[susceptibility]] <math>\chi(T)</math> as a function of temperature;
* Dynamic spin-spin correlation functions;
* Magnetization curves under applied fields.

These outputs could then be matched against experimental measurements (e.g., from [[SQUID magnetometry]] or [[neutron scattering]]) to determine or refine the exchange coupling constants <math>J_{ij}</math> for specific molecules.

The primary computing platform was Windows, with a Linux experimental build available (though notably slower due to required 32-bit compatibility libraries for graphics rendering).<ref name="seti-germany"/>

== Scientific molecules studied ==

A prominent scientific result enabled by Spinhenge@home involved the frustrated [[polyoxometalate]] molecular magnets '''Mo72Fe30''' and '''Mo72Cr30'''—spherical cage molecules each housing 30 Fe(III) or Cr(III) magnetic ions at the vertices of an icosidodecahedron. The complete chemical formula of Mo72Fe30 is:<ref name="arxiv-mo72"/>

<math>\bigl[\text{Mo}_{72}\text{Fe}_{30}\text{O}_{252}(\text{CH}_3\text{COO})_{12}\{\text{Mo}_2\text{O}_7(\text{H}_2\text{O})\}_2\{\text{H}_2\text{Mo}_2\text{O}_8(\text{H}_2\text{O})\}(\text{H}_2\text{O})_{91}\bigr] \cdot 150\,\text{H}_2\text{O}</math>

Experimental measurements of the differential susceptibility <math>dM/dH</math> of both molecules showed pronounced deviations from the predictions of standard Heisenberg models using a single exchange constant. Schröder and collaborators used the massive Monte Carlo simulations made possible by Spinhenge@home volunteers to formulate a nearest-neighbor model where the 60 nearest-neighbor exchange interactions in each molecule are described by a ''two-parameter probability distribution'' of exchange constants, achieving excellent agreement with experiment.<ref name="arxiv-mo72"/>

[[File:Icosidodecahedron.jpg|thumb|right|The icosidodecahedron geometry—identical to the arrangement of the 30 magnetic ions in Mo72Fe30 and Mo72Cr30, molecules studied using Spinhenge@home simulations.]]

Earlier related work by Schröder and collaborators (predating the BOINC project) included a study of the metamagnetic phase transition of the antiferromagnetic Heisenberg icosahedron,<ref name="icosa">{{Cite journal |last1=Schröder |first1=C. |last2=Nojiri |first2=H. |last3=Schnack |first3=J. |last4=Hage |first4=P. |last5=Luban |first5=M. |last6=Kögerler |first6=P. |title=Competing Spin Phases in Geometrically Frustrated Magnetic Molecules: Spin Dynamics in the Icosahedral Keplerate Mo72Fe30 |journal=Physical Review Letters |volume=94 |issue=1 |pages=017205 |date=2005-01-07 |doi=10.1103/PhysRevLett.94.017205 |arxiv=cond-mat/0501558}}</ref> published in ''Physical Review Letters'' in 2005, which laid the groundwork for the volunteer-computing simulations.

== Institutional collaborators ==

* '''[[Bielefeld University of Applied Sciences]]''' (''Fachhochschule Bielefeld'', now Hochschule Bielefeld / HSBI) — Department of Electrical Engineering and Computer Science. Prof. Schröder led the Computational Materials Science and Engineering group there.
* '''[[University of Osnabrück]]''' — collaborated on the molecular magnetism simulation work.
* '''[[Ames Laboratory]]''' (U.S. Department of Energy, Ames, Iowa) — co-authored key papers, with work supported by the Department of Energy Basic Energy Sciences under Contract No. DE-AC02-07CH11358.<ref name="arxiv-mo72"/>

== Publications ==

The large-scale Monte Carlo simulations produced by Spinhenge@home volunteers directly supported peer-reviewed research. Key publications include:

# {{Cite journal |last1=Schröder |first1=Christian |last2=Prozorov |first2=Ruslan |last3=Kögerler |first3=Paul |last4=Vannette |first4=Matthew D. |last5=Fang |first5=Xikui |last6=Luban |first6=Marshall |last7=Matsuo |first7=Akira |last8=Kindo |first8=Koichi |last9=Müller |first9=Achim |last10=Todea |first10=Ana Maria |title=Multiple nearest-neighbor exchange model for the frustrated magnetic molecules Mo72Fe30 and Mo72Cr30 |journal=[[Physical Review B]] |volume=77 |issue=22 |pages=224409 |date=2008-06-04 |doi=10.1103/PhysRevB.77.224409 |arxiv=0801.2065 |s2cid=118422523}} — This paper explicitly thanks the thousands of Spinhenge@home volunteers and states that the large-scale Monte Carlo simulations were made possible by volunteer computer resources.<ref name="arxiv-mo72"/>
# {{Cite journal |last1=Schröder |first1=C. |last2=Nojiri |first2=H. |last3=Schnack |first3=J. |last4=Hage |first4=P. |last5=Luban |first5=M. |last6=Kögerler |first6=P. |title=Competing Spin Phases in Geometrically Frustrated Magnetic Molecules: Spin Dynamics in the Icosahedral Keplerate Mo72Fe30 |journal=[[Physical Review Letters]] |volume=94 |issue=1 |pages=017205 |date=2005-01-07 |doi=10.1103/PhysRevLett.94.017205 |arxiv=cond-mat/0501558}} — Pre-Spinhenge foundational research on Mo72Fe30.<ref name="icosa"/>

Schröder's broader body of work from the Bielefeld group, continuing after Spinhenge@home, extended into hybrid molecular and spin dynamics simulations of nanoparticle ensembles, BOINC framework modeling, and magnetoresistive systems research.<ref name="pub-uni">{{Cite web |title=PUB – Publikationen an der Universität Bielefeld: Christian Schröder |url=https://pub.uni-bielefeld.de/person/188741281 |website=Universität Bielefeld |access-date=2026-06-16}}</ref> A 2021 paper acknowledging the Spinhenge research lineage reported a giant spin molecule with ninety-six parallel unpaired electrons.<ref name="pub-uni"/>

Additionally, Schröder presented results at the American Physical Society meetings:

* APS 75th Annual Meeting of the Southeastern Section (2008): "QMC Goes BOINC: Using Public Resource Computing to Perform Quantum Monte Carlo Calculations."<ref name="aps-75">{{Cite web |title=APS 75th Annual Meeting of the Southeastern Section – QMC Goes BOINC |url=https://meetings.aps.org/Meeting/SES08/Event/92028 |publisher=American Physical Society |date=2008 |archive-url=https://web.archive.org/web/20220814215157/https://meetings.aps.org/Meeting/SES08/Event/92028 |archive-date=2022-08-14 |access-date=2026-06-16}}</ref>
* APS 76th Annual Meeting of the Southeastern Section (2009): "How to use 100,000 PCs for studying magnetism."<ref name="aps-76">{{Cite web |title=APS 76th Annual Meeting of the Southeastern Section – How to use 100,000 PCs for studying magnetism |url=https://meetings.aps.org/Meeting/SES09/Event/112819 |publisher=American Physical Society |date=2009 |access-date=2026-06-16}}</ref>

== Legacy and successor work ==

Following Spinhenge@home, Schröder's group developed the '''Visu@lGrid''' project—a framework applying UML profiling and abstraction to BOINC-based projects—and '''ComsolGrid''', a framework for large-scale parameter studies using COMSOL Multiphysics and BOINC, presented at the COMSOL Conference 2010.<ref name="hsbi"/><ref name="pub-uni"/> These successors demonstrated how the BOINC infrastructure and lessons learned from Spinhenge@home could be applied to a broader range of computational science problems.

Schröder's group also published methodological papers on BOINC project design, including model-based generation of workunits and a UML profile for BOINC, contributing to the general infrastructure of volunteer computing research.<ref name="hsbi"/>

== See also ==

* [[BOINC]]
* [[BOINC projects]]
* [[Einstein@Home]]
* [[Volunteer computing]]
* [[Single-molecule magnet]]
* [[Molecular magnetism]]
* [[Monte Carlo method]]
* [[Ames Laboratory]]

== References ==

{{Reflist}}

== External links ==

* [https://web.archive.org/web/20060716151930/http://spin.fh-bielefeld.de/ Spinhenge@home project website (archived, July 2006)] via Wayback Machine
* [https://web.archive.org/web/20120723020143/http://spin.fh-bielefeld.de/spin_science.php More information about Spinhenge@home (archived, July 2012)] via Wayback Machine
* [https://www.youtube.com/watch?v=d-fafmtqE74 Spinhenge@home screensaver video] on YouTube
* [https://arxiv.org/abs/0801.2065 arXiv:0801.2065] — Key research paper enabled by Spinhenge@home volunteers

[[Category:BOINC projects]]
[[Category:Completed BOINC projects]]
[[Category:Physics software]]
[[Category:Molecular magnetism]]
[[Category:Volunteer computing]]