Question: Which 2005 historical novel deals with a top secret Nazi scientific technological device?

Context paragraphs:
Coalescer: A coalescer is a technological device performing coalescence.  They are primarily used to separate emulsions into their components via various processes; operating in reverse to an emulsifier.

Die Glocke: Die Glocke (] , German for "The Bell") was a purported top secret Nazi scientific technological device, secret weapon, or "Wunderwaffe".  Described by Polish journalist and author Igor Witkowski in "Prawda o Wunderwaffe" (2000), it was later popularized by military journalist and author Nick Cook as well as by writers such as and others who associate it with Nazi occultism and antigravity or free energy research.

Butcher's Broom (book): Butcher's Broom is an epic, historical novel by Neil M. Gunn written in 1934.  Based on a semi-fictionalised account of the Highland Clearances in Sutherland, the novel deals with the decline of Highland culture in a wide scope of pre-Clearance and post-Clearance life, as well as the Clearances themselves.

Hog chains: Hog chains were a technological device that permitted river boats to have lightly built hulls so they could travel in shallow water.

Keeping You a Secret: Keeping You a Secret is a young adult novel by Julie Anne Peters.  It was first published in hardback in 2003, and later in paperback in 2005.  This novel deals with mature themes.  It is about a young girl (Holland, aged 17) discovering her sexuality and what it is like to experience homophobia.  What starts out as a confusing "girl crush" becomes a discovery of Holland's true feelings and coping with the concept of attraction to a member of her own sex.  Other characters in the novel discover her crush and employ various means of physical and emotional abuse and violence, displaying strong homophobic behaviors.

Goa'uld characters in Stargate: This is a list of the Goa'uld characters that appear in "Stargate", "Stargate SG-1", and "Stargate Atlantis".  In the "Stargate" fictional universe, the Goa'uld are a parasitic alien race that use other beings as hosts.  Ra had stated in the original "Stargate" film that he had used humans exclusively as hosts for millennia, because Goa'uld technology can repair human bodies so easily that by inhabiting human forms they can be in effect ageless, though they can still be injured or killed.  Most Goa'uld pose as gods in order to control slave armies, and are considered evil, egocentric megalomaniacs by those who do not worship them.  The Goa'uld are extremely intelligent and have an aptitude for understanding, working with, and using technology that is superior to that of humans.  They each have full access to their species' genetic memory from the moment of birth.  As a result, no Goa'uld has to learn how to operate any technological device; they 'know' how to do so innately.

Finders, Keepers (Saxena novel): Finders, Keepers is a novel by Sapan Saxena.  The story takes place across the Indian subcontinent starting from the holy town of Allahabad.  It visits several holy sites in India.  The story takes place in various places of spiritual importance in India.  The novel deals with mythological themes, with a conflict between a newly active historical sect worshipping Shiva and a powerful secret organization, the Nine Unknown Men.

Positronic brain: A positronic brain is a fictional technological device, originally conceived by science fiction writer Isaac Asimov (1920–1992).  It functions as a central processing unit (CPU) for androids, and, in some unspecified way, provides them with a form of consciousness recognizable to humans.  When Asimov wrote his first robot stories in 1939 and 1940, the positron was a newly discovered particle, and so the buzz word "positronic" added a contemporary gloss of popular science to the concept.

The Black Sun (Twining novel): The Black Sun is a 2005 historical novel by British author James Twining dealing with Nazism and occultism, Die Glocke and stolen Jewish art.

Mindfulness and technology: Mindfulness and technology is a movement in research and design, that encourages the user to become aware of the present moment, rather than losing oneself in a technological device.  This field encompasses multidisciplinary participation between design, psychology, computer science, and religion.  Mindfulness stems from Buddhist meditation practices and refers to the awareness that arises through paying attention on purpose in the present moment, and non-judgmentally.  In the field of Human-Computer Interaction, research is being done on "Techno-spirituality" — the study of how technology can facilitate feelings of awe, wonder, transcendence, and mindfulness and on "Slow design", which facilitates self-reflection.  The excessive use of personal devices, such as smartphones and laptops, can lead to the deterioration of mental and physical health.  This area focuses on redesigning and creating technology to improve the wellbeing of its users.

Supporting paragraphs: The Black Sun (Twining novel) Die Glocke
Answer: The Black Sun