The phrase "a new topic of" is correct and usable in written English.
It can be used when introducing or discussing a subject that has not been previously mentioned or explored.
Example: "In today's meeting, we will explore a new topic of interest related to sustainable energy solutions."
Alternatives: "a fresh subject of" or "an emerging theme of".
MADRID — The rivalry between F.C. Barcelona and Real Madrid is such that every week seems to yield a new topic of feuding.
The HD broadcasts have also created a new topic of conversation among singers: " 'Did it make me look fat?' " Ms. Graham said.
No one was hurt, and two customers in untucked T-shirts were escorted out, all of which fed the crowd a new topic of conversation.
People have a new topic of discussion when they chat at bus stops and in checkout queues and lifts: Rousseff has been removed from the presidency.
Finally the paddock in Japan found a new topic of conversation yesterday, albeit only tangentially removed from Lewis Hamilton's move to Mercedes, when Michael Schumacher announced his second and surely final, retirement from the sport.
He was just as obviously intent on not monopolizing the speaking time, so Mr. Gore responded to a suggestion from Mr. Lehrer that another rebuttal yield to a new topic of debate by chirping: "Far be it from me to suggest otherwise".
As a new topic for the application of high power electron field emitters the concept of a miniaturised free electron laser is presented.
The point of introduction of a new topic usually constitutes a handful of publications.
Though her views on female pop stars and their sexuality have been divisive, Jones is now seeking to shed light on a new topic: the impact of the porn industry on the women who perform porn and the culture that consumes it.
On a new topic, the importance of glycaemic control in reducing morbidity and mortality in the critically ill has become fully established over the past decade.
If these expectations are aligned to those of parents and the students themselves, and are communicated from the beginning of a new topic, there is a chance of making a meaningful impact.
